Computer Networking

The Purpose of the IP Network Layer (3) of the OSI Model is to perform packet switching from one network to another. Packet Switching is a process of receiving a packet via a routed protocol on a single network and switching to another in such a way that a route to a destination can be reliably achieved (routing) via a routing protocol. Routing is processes of taking multiple network paths and by using an algorithm decide a metric which will determine the most reliable path a packet may take and store it in a table for future reference (routing table). Routing protocols like RIP use algorithms to generate and decipher a list of paths to any particular routed network. Information that is used in this determination includes hop count, reliability and link speed. Today it is widely understood that packet switched networks are superior to circuit switching. IP Multiplexing is more simplified than circuit switching and combines ability to route packets around failures which are measured and predetermined by routing protocols 24/7 365 days a year. One must however come to understand the inherent differences between routed protocols like IP and routing protocols like RIP to begin to develop a clear understanding of switched networks.

The shield reduces electrical noises affecting the signals, and to reduce electromagnetic radiation that affects other nearby devices. So the benefits are actually good for shielded cables.

Computer manners are the simple manners which are taught in classes.These manners include:

_ Do not drink or eat near the computer.

- Do not insert anything other than cd in the cd drive.

- Do not power off system directly rather first turn the system off and then power off.

- Do not press computer keys too hard.

- Keep computer cleen and dry.

One may have multiple Yahoo! email addresses. There is no current limit to the amount one may have. However, Yahoo! does occasional suspend accounts for people who abuse the terms of service.

Ask someone at the reference desk of your local public library for the Occupational Outlook Handbook. It lists all kinds of information you would need to know,(including the salary) of just about any occupation you can think of.

1

one for broadcast i.e 256

and anthoer one is network i.e 0(zero)

WPA-PSK2 AES with a long key.

Using remote desktop access provides the user many benefits. Some of which include the ability to share access of the computer with others as well as the the ability to work in other locations.

You have to use remote desktop connection and know either the computer ip address where to wnat to connect to or full name. Start->All Programs->Aceessories->Communication->Remote Desktop Connection.

P.S. You connect only to Windows Xp Pro or server versions (Windows 2003...). Windows Xp Home cannot be a remote computer where to want to connect to.

Advantages: longer distances without amplification; higher bandwidth; no problems with electromagnetic interference. Disadvantages: more expensive; more difficult to install (should only be done by specially trained people).

Advantages: longer distances without amplification; higher bandwidth; no problems with electromagnetic interference. Disadvantages: more expensive; more difficult to install (should only be done by specially trained people).

Advantages: longer distances without amplification; higher bandwidth; no problems with electromagnetic interference. Disadvantages: more expensive; more difficult to install (should only be done by specially trained people).

Advantages: longer distances without amplification; higher bandwidth; no problems with electromagnetic interference. Disadvantages: more expensive; more difficult to install (should only be done by specially trained people).

That helps ensure that equipment by different manufacturers work well together.

That helps ensure that equipment by different manufacturers work well together.

That helps ensure that equipment by different manufacturers work well together.

That helps ensure that equipment by different manufacturers work well together.

Layer 3 i.e, network layer of the OSI model is used to IP addressing.

10 kilometers

just one optic cable can carry a lot information to computers

Schools and/or small businesses such as self-employed or restaurants.

since the first 3 bits are specially preserved for the class of the internet or network.

0-127 For Class A

128-191- For class B

191-233 For class C

given ip address since the first three bits are: 172(128-191)

therefore it is of CLASS C

No it is not possible. When not part of a network you do not have the sufficient privileges to access the printer. If the network was setup as a VPN you would be able to connect it from an offsite location.

Shielded twisted pair wires are less susceptible to electrical interference caused by nearby equipment or wires and, in turn, are less likely to cause interference themselves. Because it is electrically "cleaner," shielded twisted pair wire can carry data at a faster speed. The disadvantage of shielded twisted pair wire is that it is physically larger and more expensive than twisted pair wire, and it is more difficult to connect to a terminating block.

Network Address Translation translates and IP address used in a network to another IP address known within another network. A NAT table is maintained for global to local and local to mapping of IP's. NAT can be statically defined or dynamically translate from a pool of addresses. The NAT router is responsible for translating traffic coming and leaving the network. NAT prevents malicious activity initiated by outside hosts from reaching local hosts by being dependent on a machine on the local network to initiate any connection to hosts on the other side of the router

DNS stands for Domain Name System. A DNS server resolves a name to an IP address, as stated in an earlier answer, but it can also point to multiple IP addresses for load balancing, or for backup servers if one or more is offline or not accepting connections.

Individual organizations may have their own DNS servers for their local Intranet.

Some sites have their own DNS server to switch between subdomains within them. For example, a site such as Blogspot can have subdomains come and go quite frequently. Rather than force every DNS server to update their own databases whenever someone creates a new blog, Blogspot could maintain their own DNS server to resolve names within the blogspot.com domain, e.g., to distinguish between myblog.blogspot.com and yourblog.blogspot.com ... their DNS server would be queried once blogspot.com is resolved, and it would be responsible for resolving myblog vs. yourblog.

No - Transport layer protocols are not concerned with addressing packets to the correct system. (True)

It depends on the serial bit rate versus the parallel strobe cycle time but, in general, a parallel interface is faster than a serial interface. However, modern USB, Firewire, and SATA interfaces are very fast, and might be considered faster.