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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
How does a layer 2 switch create collision domains?
When using network switches, each port on the switch is its own collision domain.
What is Client Server mechanism?
Client side (web browser) where user types his/her query and web browser sends request to server side (multiple data provider) reads the query and in response provides respective data to the client in HTML format.
its a repetitive cycle called request and response between client and server.
What is the firewall. What is the purpose of a firewall?
To filter access (in and out) to network only to a legitimate user.
Common attribute used to filter on a firewall :
1. IP number
2. MAC address
3. DNS
And so you don't have access to any websites that contain:
games
proxies
porn
downloads
chat sites (facebook, ebuddy, MSN INBOX, messenger)
A server is a dedicated computer that delivers information to other computers.
Where core cable and pair cable is used?
Assuming you're taking about 'twin core and earth' cable - it's commonly used to supply power to high-current devices such as cookers and immersion heaters.
How exactly do wireless routers work?
The exact process by which wireless routers work is highly intricate and complex. However, simply put, a router is plugged into an internet connection and broadcasts the signal so an internet connection can be accessed by other computers.
The port scanner is a software application which is designed to scan a server for open ports. This product is usually most often used by administrators who wish to verify security policies of their networks by running scans on them.
Why are IP addresses converted into binary format?
ip adresses are put into the binary format so computers can make sense of them. hexadecimal is used for the same purpose.
Is 159.15.0.10 a public or private IP address?
Public.
Private IPs are:
192.168.x.x
10.x.x.x
and there's one other range, but I can't remember it right now.
159.x.x.x is public.
What protocol is used to transfer mail from one mail server to another?
SMTP (Simple Mail Transfer Protocol) is the protocol responsible for moving messages from one mail server to another over TCP/IP-based networks.
Page(s): 501, Network+ Guide to Networks by Tamara Dean, Cengage Learning
NOOKstudy . This material is protected by copyright.
Define access of computer network?
the action of gaining access to a computer or a network by entering a username and password
internet
How do you delete a Ning social network?
BEWARE: If you create a social network on Ning, they will steal ALL of your member data...forever..without the consent of you or your users...they will put that data on Ning.com.
http://www.chartingstocks.net/2009/03/ning-exposed-tech-company-ning-scams-its-clients/
What standard must an ide bus controller and CD-ROM drive support in order to boot from CD?
El Torito
Your computer sends but does not accept packets How can you get it to receive packets?
When a computer is able to send but not receive packets, it means it has wrong DNS server addresses and gateway. Check out the correct addresses in order for the computer to send and receive packets.
How long can the domain name be and what characters can we use?
Domain Name:
- It can be 67 characters long including the 4 character long top level domain (with dot Example: .com, .biz)
- The characters that are permitted are letters, numbers and hypens.
- The special characters that are not permitted are exclamation, underscore
What dns records types should you create to indicate the location of mail servers?
domain.com. IN MX 10 mail.domain.com.
MX record is used for mail server
What is the Difference between mainframe and client server?
Basically, a mainframe is a big piece of machinery. A client server is a complex computer program that uses that big piece of machinery and perhaps other pieces of machinery. The client server program resides in the main frame computer and takes orders from the various terminals attached to it. It may request data from the main frame or data from a distant main frame.
