Eagle Eye is more of a story about Jerry, a young man, along with Rachel whom he strangely met, and their adventures as they were brought together and chased by a mysterious phone call from a woman they have never met. Threatening their lives and family, she pushes Jerry and Rachel into a series of increasingly dangerous situations, using the technology of everyday life to track and control their every move. The woman was actually an artificial intelligence computer in Pentagon who wants to eliminate the President and its cabinet to pursue her other plans.
She is a top secret supercomputer, called "Autonomous Reconnaissance Intelligence Integration Analyst" (ARIIA) tasked with gathering intelligence from all over the world.
ARIIA is housed in Pentagon, and Jerry learned that his late twin brother, Ethan, worked as a technician for the computer and locked it down to prevent ARIIA from carrying out her plan. Jerry and Rachel arrive at the Pentagon and are led to the supercomputer, where ARIIA forces Jerry to impersonate Ethan and use his own biometrics to override the lockdown, allowing her to go ahead with the plan but couldn't go with it. She was threatened that her son who is in his way to play in a band recital during the President's speech be killed. ARIIA had coerced some agents to make an explosive device into a necklace of which its sound-based trigger is put inside Sam's trumpet.
The movie actually gave us a significant lesson of how technology that is developed by mankind to give us security and convenience can be threats to our own safety. The supercomputer ARIIA made a lot of chaos by remotely controlling any networked device and with the technology we have right now, there are a thousand chances that supercomputer machines like that that is housed in Pentagon will be used with us in our everyday work. So it is just necessary for humans to not depend everything on computers especially if they can control other computers because they can impose danger to human life.
Wednesday, March 23, 2011
Pirates of Silicon Valley
This film is all about the history and experiences of the people behind the two popular companies Apple and Microsoft. It narrates how these people faced their struggles to create the two empires of the big-time computer companies.
Pirates of Silicon Valley tells more of the comparison of how these two had their start in their business. It tells much of their operations and differences in their founders' management and operations with the company business.
The story also narrates misadventures that happened between meetings of these two rivals who gained popularity among the public due to their inventions in technology. There were some pirated software schemes between the two and of course, they were not good terms of business deals. The story was amazing because it gives the viewers the idea of how technology changed the way life like it is now as it had when these two popular computer companies began and rose in their business.
Pirates of Silicon Valley tells more of the comparison of how these two had their start in their business. It tells much of their operations and differences in their founders' management and operations with the company business.
The story also narrates misadventures that happened between meetings of these two rivals who gained popularity among the public due to their inventions in technology. There were some pirated software schemes between the two and of course, they were not good terms of business deals. The story was amazing because it gives the viewers the idea of how technology changed the way life like it is now as it had when these two popular computer companies began and rose in their business.
Sunday, March 13, 2011
SURROGATES
SURROGATES
Surrogate is a movie where humans live isolation and only interact through remote-controlled artificial bodies that serve as surrogates. Surrogate defines as one that takes the place of another; a substitute. This movie happens when the world has overrun with robots. Many human beings have chosen to have a replica or surrogate of themselves. Humans are able to remotely control their other self and send it to the world to do for them what they normally would have done with themselves. Thus, the world becomes peaceful wherein there is no crimes, and no pains. However, there are several humans gets killed when his surrogate is destroyed, a cop who where plays by Bruce Willis investigates the crimes through his own surrogate.
This movie has brought a lesson to us humans who are too dependent on the technology. It teaches us that there is nothing wrong with getting older. We live and we die, and that is how were brought up to learn. In reality, just like in this movie, many people hiding behind their internet persona to upper better that they are instead of meeting people face-to-face to socialize. If we are to remember, the initially intention of the creation of robots were to allow disabled people to experience things that only physically normal individual could, not to gives humans reason to leave their house just like what is being portray in this movie. Another is the development of chat rooms, where it purposely serve as a communication line to bring people together when real interaction or physical interaction is not possible, not to act as a permanent substitute for daily in person interaction. It only shows that the real purpose was lost in both cases which somehow change the way people live their lives.
Friday, March 4, 2011
WALL-E
WALL-E
The movie situates on the year of 2700 where the world has long been uninhabitable. Humans have abandoned the earth because it has been covered with trash and waste which causes devoid of the plants and animal life. All human beings where continue their life in the outer space while the earth is preparing to its restoration. For how many years, only one robot remains on cleaning the earth, that is Wall-e. Wall-e (Waste Allocation Load Lifter Earth-Class) is the garbage collecting robot that has left to clean the mess of the earth.
Watching the movie, made me realized how the earth will be looked like when people act as an irresponsible human being throwing all their trash that leads to destroying the mother earth. Wall-e as a garbage collector robot has expending years to clean up the garbage left by uncaring and selfish people who are enjoying their lives in the spaceship Axiom. They have just waiting for the day when the earth is ready and available to be inhabitable. The movie is reminding everyone of us we might end up just like what is in this movie. We might headed to the same direction in which making our world inhabitable. As what we observe to our surroundings today, we have effectively polluted the land, water and air supply. Here in the movie, people are not worried on what happened to the earth and even thinking of learning to conserve it. However, we can never blame them because everything they do is cared by the machines. We all know we are too much dependent on technology since it makes us to save time and become efficient. Unfortunately, our dependency with those machines have isolated us from one another. The movie stresses out the rampant commercialism in Axiom. In the spaceship where people are aboard everything is being provided. Even if those things are not needed. For the Big and Large Corporation everything is provided that given them away to profit. As you observe on the people on Axiom, they are all suffering from obesity. Obesity has become the epidemic on the people on board to the spaceship because everything is cared of by the machine in which walking and standing became useless activities to humankind. They don't have time to have some exercise because they are comfortable of having hover chair in doing everything all day. With this movie, it makes us realized that yes technology is a great help us, it make things easier but too much reliance of those might as well give disadvantage to us.
Tuesday, March 1, 2011
iRobots
The story of the movie takes place in the year of 2035, which the part of technological revolution. It is futuristic scenery where the world has filled with millions of servant robots. These robots have used to do all the manual labor. They are the perfect helper to the society. Humans are free to enjoy their lives without the stress. Robots have been hardwired with the said three laws (The Three Laws of Robotics) that make them incapable of harming the society. Yet there is murder happen to one of the robotics science who is a friend of Will Smith in this movie. Will Smith plays the role of Detective Spooner who has distrust of the robots because of the incident in his past. It is believed that his friend has committed suicide which Spooner does not consider. Spooner suspicion on the incident falls to Sonny, the unique robot who has dreams and emotions.
With this movie, it leaves me a question to me if could robots will take over the world. Definitely, robots is really has a great help to the society. We all know automation has currently exists in many areas, in our house, at our work and even to the new technologies that have invented. Exoskeleton is the external skeleton that would help disabled people to move and making them less dependency with other people. One of the advantages of robots will be a replacement human in the areas of security, surveillance and defense, such soldiers and armies which will result be less human deaths. But having robots will bring drawbacks to the society. If robots will carry out all the labors tasks in the company, industry or all human workloads surely unemployment will arise might as well poorly paid workers. I cannot truly justify if robots are a great help or would be a destruction to human existence.
Friday, December 10, 2010
FUTURE TECHNOLOGY - Assignment 1
Why do we need to study technology?
Before when technology is being mentioned one thing comes in my mind are the gadgets and machines around us. Later on I realized, technology starts in people’s simple way of living. In the simple process technology is there without the usage of machine in which it has been improved by applying the knowledge of people on the things around them. Because of the innovative mind of people they have developed things that improve the way they live. And because of the needs of the society, technological development has drastically changed the way people live.
Today, we are bombard of high technology gadgets and machines that are created to make tasks easier for us to do. Technology has the great impact of the society. With this technology, it creates shortcuts in everything we do. In today’s modern technology, many areas of our lives have been improved. These are in telecommunication, transportation, and most especially in medical aspects. But why there is a need to study technology, simply because everything is changing and with that change we have to adopt and embrace that change. We all know nothing is constant in this world, everything changes together with that is improvement of everything around us. We must go on the flow of the development and not to ignorant of things around us for our betterment.
Monday, August 2, 2010
SAD 2 Assignment 3
Computer hard and software are the components that comprise the computer network. These are maintained by a network specialist. Since our university has a system that is networked, we have a network specialist that responsible for the network design and security. He has to insure the system condition, network connectivity throughout the university’s system infrastructure. Network specialist is focused more particularly on troubleshooting and/or debugging network related problems.
Now, since we have to examine the system deployed in our university knowledge on networking is indeed what we need. So, we arranged an interview with our network administrator and/or a network specialist. Engr. Ariel Reyes. Unfortunately, due to his tight schedule we were not able to conduct interview and discuss with him our questions and concerns. With that, we were able to create and formulate questions that we want to know. Below are the questions that had been forwarded to the network specialist.
Q and A:
1. In system development, how various parts of the system communicate with each other throughout the university? In what way?
Regarding System Development, the best person to ask is our University Programmers, Mr. Fortich and Dr. Mercado.
2. What are the components involved in the system(s) in the university? (hardware, software, technology, etc.)
• I am not in the right position to discuss the details of the software components used as there are other assigned personnel for such job. However, talking about hardware component and technology used, basically I, assigned as the network administrator, is entrusted to maintain our different servers to run 24/7. Currently, we have our Web Server hosted here in our University in our HP ProLiant ML350 Server. Its an old but stable server set-up here in our Networks Office and has been active since Engr. Val A. Quimno , not yet a dean, was appointed as the Network Administrator. The said server has the following specification:
• Intel Xeon 3.0 GHz, 3.2 GHz, or 3.4 GHz processors (dual processor capability) with 1MB level 2 cache standard. Processors include support for Hyper-Threading and Extended Memory 64 Technology (EM64T)
• Intel® E7520 chipset
• 800-MHz Front Side Bus
• Integrated Dual Channel Ultra320 SCSI Adapter
• Smart Array 641 Controller (standard in Array Models only)
• NC7761 PCI Gigabit NIC (embedded)
• Up to 1 GB of PC2700 DDR SDRAM with Advanced ECC capabilities (Expandable to 8 GB)
• Six expansion slots: one 64-bit/133-MHz PCI-X, two 64-bit/100-MHz PCI-X, one 64-bit/66-MHz PCI-X, one x4 PCI-Express, and one x8 PCI-Express
• New HP Power Regulator for ProLiant delivering server level, policy based power management with industry leading energy efficiency and savings on system power and cooling costs
• Three USB ports: 1 front, 1 internal, 1 rear
• Support for Ultra320 SCSI hard drives (six hot plug or four non-hot plug drives supported standard, model dependent)
• Internalstorage capacity of up to 1.8TB; 2.4TB with optional 2-bay hot plug SCSI drive
• 725W Hot-Plug Power Supply (standard, most models); optional 725W Hot-Pluggable Redundant Power Supply (1 1) available. Non hot plug SCSI models include a 460W non-hot plug power supply.
• Tool-free chassis entry and component access
• Support for ROM based setup utility (RBSU) and redundant ROM
• Systems Insight Manager, SmartStart, and Automatic Server Recovery 2 (ASR-2) included
• Protected by HP Services and a worldwide network of resellers and service providers. Three-year Next Business Day, on-site limited global warranty. Certain restrictions and exclusions apply. Pre-Failure Notification on processors, memory, and SCSI hard drives.
Aside from it, our mail server running under Compaq Proliant ML330 Server, our oldest server, is also hosted here in our Networks Office. Together with other Servers, such as Proxy and Enrollment Servers, both proxy and our enrollment servers are running in a microcomputer/personal computers but with higher specifications to act as servers.
REACTION:
As I search the net about the HP ProLiant ML350 Server that is used to the university’s as a server, I learned that this technology is described as DUAL. It has Dual Socket, Dual Core, and Quad Core Intel, Dual-redundant hot plug power supplies, dual redundant fans and the smaller, lighter and quitter dual-purpose chasis and many more. With this specification, this server has a good and flexible server. This kind of server is designed for reliability, expandability, performance and environmental features.
3. How do these communicate with one another? (topology, network connectivity, protocols, etc.) – may include data flow/ UML diagrams to better explain.
All Servers are connected in a shared medium grouped as one subnetwork. In general, our network follows the extended star topology which is connected to a DUAL WAN Router that serves as the load balancer between our two Internet Service Providers. All other workstations are grouped into different subnetworks as in star topology branching out from our servers subnetwork as in extended star topology. At present, we are making use of class C IP Address for private IP address assignments. Other workstations IP assignments are configured statically (example: laboratories) while others are Dynamic (example: offices). All workstations are connected via our proxy servers that do some basic filtering/firewall to control users access to the internet aside from router filtering/firewall management. So, whenever any workstation has to connect to the internet, it has to pass through software and hardware based firewall.
REACTION
Since our network is connected with the DUAL WAN Router (which is stated above), I guess it is good to use this technology. This router is for fail over, when one connection is down the other one will automatically pick up and continue the job. And according to my research, using a DUAL WAN Router will add up total bandwidth, with this the throughput or performance in computer network is increased.
4. What are the processes involved in the communication (each system to other systems)?
As mentioned above, in item 3, all workstations are connected via a proxy server. It means that whenever a workstation is turned on, it requests for an IP address from the proxy server (for dynamically configured IP address) and connect to the network after IP address is acquired. As connection is established, each system can now communicate and share resources within the same subnetwork and to server following the concepts discuss in your Computer Network Class.
5. How do you go along with the maintenance of the system?
Basically, our servers are expected to be in good condition since it is required to be up 24/7. Daily, during my vacant period, monitoring on the servers are observed that includes checking logs, checking hardware performance such as CPU health, etc. If problems are observed, remedies are then and then applied. Once in a week, regular overall checkup is observed as preventive maintenance to ensure not to experience longer downtime if possible.
REACTION:
As I mentioned in my introduction, one of the task of the network specialist is to insure the networked system’s condition, with that it needs to have a regular check up on and proper maintenance since some components must run 24/7 such as the servers.
For maintaining the network system, one good method or practice is to develop a PREVENTIVE MAINTENANCE plan. It refers to performing proactive maintenance in order to prevent possible systems’ problems.
The following are the reasons why should have to develop a PREVENTIVE MAINTENANCE Plan.
Preventive Maintenance Saves Money: Avoiding problems with your PC will save you money in the long run. By preventing a problem from occurring, you will no longer need to spend money on new components or repair jobs.
Preventive Maintenance Saves Time: Preventive maintenance saves time because it saves you the inconvenience and disruption of system failures and lost data. Most preventive maintenance procedures are quite simple compared to troubleshooting and repair procedures.
Preventive Maintenance Helps Safeguard Your Data: For most people, the data on the hard disk is more important than the hardware that houses it. Taking steps to protect this data therefore makes sense, and that is what preventative maintenance is all about.
Preventive Maintenance Improves Performance: Some parts of your system will actually degrade in performance over time, and preventive maintenance will help to improve the speed of your system in these respects.
This will benefit us so as to have secure and steady computer systems.
there are two types of Preventive Maintenance:
Preventive Maintenance
Preventive maintenance is a schedule of planned maintenance actions
aimed at the prevention of breakdowns and failures. The primary goal of
preventive maintenance is to prevent the failure of equipment before it
actually occurs. It is designed to preserve and enhance equipment
reliability by replacing worn components before they actually fail.
Preventive maintenance activities include equipment checks, partial or
complete overhauls at specified periods, oil changes, lubrication and so
on. In addition, workers can record equipment deterioration so they
know to replace or repair worn parts before they cause system failure.
Recent technological advances in tools for inspection and diagnosis have
enabled even more accurate and effective equipment maintenance. The
ideal preventive maintenance program would prevent all equipment failure
before it occurs.
Value of Preventive Maintenance
There are multiple misconceptions about preventive maintenance. One such
misconception is that PM is unduly costly. This logic dictates that it
would cost more for regularly scheduled downtime and maintenance than it
would normally cost to operate equipment until repair is absolutely
necessary. This may be true for some components; however, one should
compare not only the costs but the long-term benefits and savings
associated with preventive maintenance. Without preventive maintenance,
for example, costs for lost production time from unscheduled equipment
breakdown will be incurred. Also, preventive maintenance will result in
savings due to an increase of effective system service life.
6. Does the system follow a specific standard? Explain Please.
As I was appointed as the Network Administrator, everything was already in place except for some minor changes. Basically, different networking standards was already observed such as cabling standards, TIA/EIA 568A-B, different IEEE standards as discussed in your Computer Networks Subject, etc.
We all know that all networking technologies have standards associated with them. One standard used to our system is the TIA/EIA 568B,. It is a set of three telecommunication standards from the telecommunication Industry Association. For structural cabling system ,this standard is used that enable the for its design and structure.
7. How is the security of the system? Are there any vulnerabilities? Risks? Corresponding mitigation techniques? Access control?
As I have mentioned, we have implemented both software and hardware based filtering/firewall. Basically, Risks or vulnerabilities and different mitigation techniques were considered to increase security in our network. Aside from filtering/firewall, constant monitoring on networks activity also increases the security of the system.
REACTION:
We all know what a firewall is. According to WIKI :
A firewall is a part of a computer system or network that is
designed to block unauthorized access while permitting authorized
communications. It is a device or set of devices which is configured to
permit or deny computer applications based upon a set of rules and other
criteria.
Firewalls can be implemented in either hardware or software, or a
combination of both. Firewalls are frequently used to prevent
unauthorized Internet users from accessing private networks connected to
the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.
For HARDWARE firefall, i would like to suggest Adaptive Security Appliance. This is the new product of CISCO in security.One of the advantages of hardware firewalls is the ASIC modules. These
modules perform tasks such as VPN and IPS and relieves the box's main
processor from performing such functions.
Adaptive Security Appliance
CISCO ASA 5500 Series adaptive security appliances are purpose-built solutions that combine best-of-breed security and VPN services with the innovative Cisco Adaptive Identification and Mitigation (AIM) architecture. Designed as a key component of the Cisco Self-Defending Network, the Cisco ASA 5500 Series provides proactive threat defense that stops attacks before they spread through the network, controls network activity and application traffic, and delivers flexible VPN connectivity. The result is a powerful multifunction network security appliance family that provides the security breadth and depth for protecting small and medium-sized business and enterprise networks while reducing the overall deployment and operations costs and complexities associated with providing this new level of security. The Cisco ASA 5500 Series delivers a powerful combination of multiple market-proven technologies in a single Cisco Self-Defending Network is one of the known for Network Security in which the firewall, router and switches play a role in implementing the network security.
8. Are there any interference? During what (most) times do these occur? Explain their effects especially with regards to the business of the university?
Major Interferences are normally encountered as an effect of unforeseen and beyond our control events such as black outs, and the like. The said interference would of course affect University’s day-to-day businesses for obviously this will paralyze all our activities that rely on electricity and further this might cause damage on our network devices, etc. that may later be the reason for longer downtime. Problems encountered by our providers such as connection to the National/International Gateway also affect University’s business such as correlating to University’s Business Partners outside and within the country.
==these questions were not answered====
9. What are the current trends in network environment ideal for the university?
10. Based on your experience, can you enumerate and discuss your key points for an effective and efficient network environment that is ideal for the university?
11. Can those key points apply to the current trends for the university’s network environment? How it works?
12. Can you draw the general network architecture of the university?
13. On your own opinion, are the users satisfied with the current network setup?
14. What network architecture is used in the university?
15. What are the drawbacks that you found in the existing system? How would you treat these drawbacks?
16. On you own opinion; are there any changes that you want to change in the existing network architecture?
17. How would you see the university few years after implementing the newly developed system?
http://www.nitconnect.net/network_maintenance.shtml
http://en.wikipedia.org/wiki/Cisco_PIX#Performance_specifications
Now, since we have to examine the system deployed in our university knowledge on networking is indeed what we need. So, we arranged an interview with our network administrator and/or a network specialist. Engr. Ariel Reyes. Unfortunately, due to his tight schedule we were not able to conduct interview and discuss with him our questions and concerns. With that, we were able to create and formulate questions that we want to know. Below are the questions that had been forwarded to the network specialist.
Q and A:
1. In system development, how various parts of the system communicate with each other throughout the university? In what way?
Regarding System Development, the best person to ask is our University Programmers, Mr. Fortich and Dr. Mercado.
2. What are the components involved in the system(s) in the university? (hardware, software, technology, etc.)
• I am not in the right position to discuss the details of the software components used as there are other assigned personnel for such job. However, talking about hardware component and technology used, basically I, assigned as the network administrator, is entrusted to maintain our different servers to run 24/7. Currently, we have our Web Server hosted here in our University in our HP ProLiant ML350 Server. Its an old but stable server set-up here in our Networks Office and has been active since Engr. Val A. Quimno , not yet a dean, was appointed as the Network Administrator. The said server has the following specification:
• Intel Xeon 3.0 GHz, 3.2 GHz, or 3.4 GHz processors (dual processor capability) with 1MB level 2 cache standard. Processors include support for Hyper-Threading and Extended Memory 64 Technology (EM64T)
• Intel® E7520 chipset
• 800-MHz Front Side Bus
• Integrated Dual Channel Ultra320 SCSI Adapter
• Smart Array 641 Controller (standard in Array Models only)
• NC7761 PCI Gigabit NIC (embedded)
• Up to 1 GB of PC2700 DDR SDRAM with Advanced ECC capabilities (Expandable to 8 GB)
• Six expansion slots: one 64-bit/133-MHz PCI-X, two 64-bit/100-MHz PCI-X, one 64-bit/66-MHz PCI-X, one x4 PCI-Express, and one x8 PCI-Express
• New HP Power Regulator for ProLiant delivering server level, policy based power management with industry leading energy efficiency and savings on system power and cooling costs
• Three USB ports: 1 front, 1 internal, 1 rear
• Support for Ultra320 SCSI hard drives (six hot plug or four non-hot plug drives supported standard, model dependent)
• Internalstorage capacity of up to 1.8TB; 2.4TB with optional 2-bay hot plug SCSI drive
• 725W Hot-Plug Power Supply (standard, most models); optional 725W Hot-Pluggable Redundant Power Supply (1 1) available. Non hot plug SCSI models include a 460W non-hot plug power supply.
• Tool-free chassis entry and component access
• Support for ROM based setup utility (RBSU) and redundant ROM
• Systems Insight Manager, SmartStart, and Automatic Server Recovery 2 (ASR-2) included
• Protected by HP Services and a worldwide network of resellers and service providers. Three-year Next Business Day, on-site limited global warranty. Certain restrictions and exclusions apply. Pre-Failure Notification on processors, memory, and SCSI hard drives.
Aside from it, our mail server running under Compaq Proliant ML330 Server, our oldest server, is also hosted here in our Networks Office. Together with other Servers, such as Proxy and Enrollment Servers, both proxy and our enrollment servers are running in a microcomputer/personal computers but with higher specifications to act as servers.
REACTION:
As I search the net about the HP ProLiant ML350 Server that is used to the university’s as a server, I learned that this technology is described as DUAL. It has Dual Socket, Dual Core, and Quad Core Intel, Dual-redundant hot plug power supplies, dual redundant fans and the smaller, lighter and quitter dual-purpose chasis and many more. With this specification, this server has a good and flexible server. This kind of server is designed for reliability, expandability, performance and environmental features.
3. How do these communicate with one another? (topology, network connectivity, protocols, etc.) – may include data flow/ UML diagrams to better explain.
All Servers are connected in a shared medium grouped as one subnetwork. In general, our network follows the extended star topology which is connected to a DUAL WAN Router that serves as the load balancer between our two Internet Service Providers. All other workstations are grouped into different subnetworks as in star topology branching out from our servers subnetwork as in extended star topology. At present, we are making use of class C IP Address for private IP address assignments. Other workstations IP assignments are configured statically (example: laboratories) while others are Dynamic (example: offices). All workstations are connected via our proxy servers that do some basic filtering/firewall to control users access to the internet aside from router filtering/firewall management. So, whenever any workstation has to connect to the internet, it has to pass through software and hardware based firewall.
REACTION
Since our network is connected with the DUAL WAN Router (which is stated above), I guess it is good to use this technology. This router is for fail over, when one connection is down the other one will automatically pick up and continue the job. And according to my research, using a DUAL WAN Router will add up total bandwidth, with this the throughput or performance in computer network is increased.
4. What are the processes involved in the communication (each system to other systems)?
As mentioned above, in item 3, all workstations are connected via a proxy server. It means that whenever a workstation is turned on, it requests for an IP address from the proxy server (for dynamically configured IP address) and connect to the network after IP address is acquired. As connection is established, each system can now communicate and share resources within the same subnetwork and to server following the concepts discuss in your Computer Network Class.
5. How do you go along with the maintenance of the system?
Basically, our servers are expected to be in good condition since it is required to be up 24/7. Daily, during my vacant period, monitoring on the servers are observed that includes checking logs, checking hardware performance such as CPU health, etc. If problems are observed, remedies are then and then applied. Once in a week, regular overall checkup is observed as preventive maintenance to ensure not to experience longer downtime if possible.
REACTION:
As I mentioned in my introduction, one of the task of the network specialist is to insure the networked system’s condition, with that it needs to have a regular check up on and proper maintenance since some components must run 24/7 such as the servers.
For maintaining the network system, one good method or practice is to develop a PREVENTIVE MAINTENANCE plan. It refers to performing proactive maintenance in order to prevent possible systems’ problems.
The following are the reasons why should have to develop a PREVENTIVE MAINTENANCE Plan.
Preventive Maintenance Saves Money: Avoiding problems with your PC will save you money in the long run. By preventing a problem from occurring, you will no longer need to spend money on new components or repair jobs.
Preventive Maintenance Saves Time: Preventive maintenance saves time because it saves you the inconvenience and disruption of system failures and lost data. Most preventive maintenance procedures are quite simple compared to troubleshooting and repair procedures.
Preventive Maintenance Helps Safeguard Your Data: For most people, the data on the hard disk is more important than the hardware that houses it. Taking steps to protect this data therefore makes sense, and that is what preventative maintenance is all about.
Preventive Maintenance Improves Performance: Some parts of your system will actually degrade in performance over time, and preventive maintenance will help to improve the speed of your system in these respects.
This will benefit us so as to have secure and steady computer systems.
there are two types of Preventive Maintenance:
Preventive Maintenance
Preventive maintenance is a schedule of planned maintenance actions
aimed at the prevention of breakdowns and failures. The primary goal of
preventive maintenance is to prevent the failure of equipment before it
actually occurs. It is designed to preserve and enhance equipment
reliability by replacing worn components before they actually fail.
Preventive maintenance activities include equipment checks, partial or
complete overhauls at specified periods, oil changes, lubrication and so
on. In addition, workers can record equipment deterioration so they
know to replace or repair worn parts before they cause system failure.
Recent technological advances in tools for inspection and diagnosis have
enabled even more accurate and effective equipment maintenance. The
ideal preventive maintenance program would prevent all equipment failure
before it occurs.
Value of Preventive Maintenance
There are multiple misconceptions about preventive maintenance. One such
misconception is that PM is unduly costly. This logic dictates that it
would cost more for regularly scheduled downtime and maintenance than it
would normally cost to operate equipment until repair is absolutely
necessary. This may be true for some components; however, one should
compare not only the costs but the long-term benefits and savings
associated with preventive maintenance. Without preventive maintenance,
for example, costs for lost production time from unscheduled equipment
breakdown will be incurred. Also, preventive maintenance will result in
savings due to an increase of effective system service life.
6. Does the system follow a specific standard? Explain Please.
As I was appointed as the Network Administrator, everything was already in place except for some minor changes. Basically, different networking standards was already observed such as cabling standards, TIA/EIA 568A-B, different IEEE standards as discussed in your Computer Networks Subject, etc.
We all know that all networking technologies have standards associated with them. One standard used to our system is the TIA/EIA 568B,. It is a set of three telecommunication standards from the telecommunication Industry Association. For structural cabling system ,this standard is used that enable the for its design and structure.
7. How is the security of the system? Are there any vulnerabilities? Risks? Corresponding mitigation techniques? Access control?
As I have mentioned, we have implemented both software and hardware based filtering/firewall. Basically, Risks or vulnerabilities and different mitigation techniques were considered to increase security in our network. Aside from filtering/firewall, constant monitoring on networks activity also increases the security of the system.
REACTION:
We all know what a firewall is. According to WIKI :
A firewall is a part of a computer system or network that is
designed to block unauthorized access while permitting authorized
communications. It is a device or set of devices which is configured to
permit or deny computer applications based upon a set of rules and other
criteria.
Firewalls can be implemented in either hardware or software, or a
combination of both. Firewalls are frequently used to prevent
unauthorized Internet users from accessing private networks connected to
the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.
For HARDWARE firefall, i would like to suggest Adaptive Security Appliance. This is the new product of CISCO in security.One of the advantages of hardware firewalls is the ASIC modules. These
modules perform tasks such as VPN and IPS and relieves the box's main
processor from performing such functions.
Adaptive Security Appliance
CISCO ASA 5500 Series adaptive security appliances are purpose-built solutions that combine best-of-breed security and VPN services with the innovative Cisco Adaptive Identification and Mitigation (AIM) architecture. Designed as a key component of the Cisco Self-Defending Network, the Cisco ASA 5500 Series provides proactive threat defense that stops attacks before they spread through the network, controls network activity and application traffic, and delivers flexible VPN connectivity. The result is a powerful multifunction network security appliance family that provides the security breadth and depth for protecting small and medium-sized business and enterprise networks while reducing the overall deployment and operations costs and complexities associated with providing this new level of security. The Cisco ASA 5500 Series delivers a powerful combination of multiple market-proven technologies in a single Cisco Self-Defending Network is one of the known for Network Security in which the firewall, router and switches play a role in implementing the network security.
8. Are there any interference? During what (most) times do these occur? Explain their effects especially with regards to the business of the university?
Major Interferences are normally encountered as an effect of unforeseen and beyond our control events such as black outs, and the like. The said interference would of course affect University’s day-to-day businesses for obviously this will paralyze all our activities that rely on electricity and further this might cause damage on our network devices, etc. that may later be the reason for longer downtime. Problems encountered by our providers such as connection to the National/International Gateway also affect University’s business such as correlating to University’s Business Partners outside and within the country.
==these questions were not answered====
9. What are the current trends in network environment ideal for the university?
10. Based on your experience, can you enumerate and discuss your key points for an effective and efficient network environment that is ideal for the university?
11. Can those key points apply to the current trends for the university’s network environment? How it works?
12. Can you draw the general network architecture of the university?
13. On your own opinion, are the users satisfied with the current network setup?
14. What network architecture is used in the university?
15. What are the drawbacks that you found in the existing system? How would you treat these drawbacks?
16. On you own opinion; are there any changes that you want to change in the existing network architecture?
17. How would you see the university few years after implementing the newly developed system?
http://www.nitconnect.net/network_maintenance.shtml
http://en.wikipedia.org/wiki/Cisco_PIX#Performance_specifications
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