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Computer Networking

Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.

18,810 Questions

Is coaxial cable more susceptible to EMI than STC?

It's very hard to tell because both have shields. Last version of STP must be better than coaxial.

What is the protocol used by server and client?

There is no single protocol used between a server and a client; the protocol depends on what the server and client are doing and how they are currently communicating.

What was the size of a big computer server in the 60's?

The most common computer in the 1960's was the ENIAC, it took up 680 square feet.

Why is MODEM a necessary component of many data communication system?

because internet that comes down a telephone line are analogue signals and the computer on understands digital signals ( 1 and 0s , Machine code, binary) so the modem translates the analogue signals from the phone line to digital and translates digital signals from the computer to analogue

What is the purpose of SYN bit in a TCP header?

In order to begin the handshake process, the client sends a SYN packet to the server. This is required to establish a synchronization with the server in order to ensure that both the client and the server will maintain and keep their exchange of packets in the right order. In order to complete the "handshake," the reponse from the server will be an ACK packet.

How do you take a picture in the impossible quiz?

Turn the knob on top of the camera next to the button to take the picture, turn it three times until the light goes from red to green and then touch the picture button to take the picture! Your welcome!

Can you show a picture of coaxial cable?

http://www.computercablestore.com/images/products/No%20Manufacturer/0-RG6.jpg

Or, for a creative commons image which you can use freely, then look here:
http://commons.wikimedia.org/wiki/File:Coaxial_cable_cutaway.svg

How many types of exchange server?

two types of exchange server:-

exchange server standerd

exchange server enterprise

What is an SSH client used for?

An SSH client is often used for sending data over a secure connection between two networked computers. The best-known use for the SSH protocol is to access shell accounts.

What is meant by network traffic management?

Network traffic management is an information technology term used to describe the management of the usage on a computer network and is routinely implemented to keep speeds high by controlling what a person can and can't access.

Where can one purchase a crossover Ethernet cable?

Research has shown that crossover ethernet cables are widely available. One can purchase these cables at stores such as Best Buy, Radio Shack and Tiger Direct. One will also find these available online on site such as Amazon and eBay.

What is extended router access list?

Router access list is the list of condition that categorize packet and also filter unwanted packets.

And at 1 interface per direction, per protocol there should be only 1 ACL.

ACL list are of two types

Standard and Extended

In Number standard ACL range is 1-99, 1300-1999.

In Number standard ACL range is 100-199, 2000-2699.

Is it possible to use a mainframe computer with multiple workstations such that one workstation could be checking email another playing a video game and another recording music?

A "Mainframe" computer is usually a term for a large server. Using that as a central are for running processes. But what you are asking is complex. The technical answer is yes.

What is the difference between a static IP address and a floating IP address?

Static IP always remains the same if you shut the computer down and restart. The floating IP (or the one assigned by DHCP), changes sometimes on a daily or hourly basis, mostly depending on if you shut your computer down and restart it. During the time your computer is (offline), the DHCP server can assign that former IP to a unit that was just booted up. In that case you would be assigned a new IP when you booted up.

When inter VLAN routing is used how are the switch ports that link to the router configured?

switch(config)#int type <no>

switch(config-if)#switchport mode trunk

switch(config-if)#switchport trunk allowed vlan all/vlan no

switch(config-if)#exit

switch(config)#exit

switch#

Is a wireless b router better than a wireless g router?

Wireless G router is capable of supporting faster speeds than the B router.

Wireless B router uses the IEEE 802.11b standard which supports bandwidth up to 11 Mbps, while the 802.11g (or G-series) supports bandwidth up to 54 Mbps.

  • Pros of 802.11b - lowest cost; signal range is good and not easily obstructed
  • Cons of 802.11b - slowest maximum speed;
  • Pros of 802.11g - fast maximum speed; signal range is good and not easily obstructed
  • Cons of 802.11g - costs more than 802.11b

Why would the activity lights on the network card not illuminate when plugging the Ethernet cable in?

This will happen for several reasons, the most likely is the cable is plugged into the network card at the computer, but not at the switch or hub. It could also be that the port on the switch the cable is plugged into is disabled, or broken, network card could also be broken.

Why token ring cannot be used in wan?

Token ring is a loacal area network technology. It is limited in ldistance by its physical layer connection requirements.

Does MTN Nigeria use a static IP or a dynamic IP?

They probably would implement both depending on the clientelle. For large customers, dynamic addressing seems the best option.

How do you you check status of nfs server from a client system?

using showmount -e "nfs server name" command , can check status of nfs server.