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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
What is network application and give 3 examples?
A network application has two components, one that runs on the local computer and one that runs on a remote computer. E-mail and surfing the internet are a common example of a network application.
How many network IDs are there in a Class B IP address?
In a class B IP address, the first two bytes represent the network.
The first two bits are 1 and 0, which means that there are 214 (10 000000 00000000 to 10 111111 11111111) network possibilities, which is 16,384 possible networks. The networks available in class B are therefore networks going from 128.0.0.0 to 191.255.0.0.
The two bytes to the left represent the computers on the network. The network can therefore contain a number of computers equal to:
216-21 = 65,534 computers.
There are several examples of domains...
Domain Bacteria
Domain Archaea
Domain Eukarya which consists of different kingdoms:
Protists
Plantae
Fungi
Animalia
Where can one find dedicated server reviews?
A great place to start looking for dedicated server reviews is in publications related to technology, particularly those in internet based, electronic publications. Some examples of these are blogs and ezines. This type of media is easy to change, which allows for fast publication time. Fast publication time means that the review of any particular server stays as current as the server's latest update.
Functions of a network operating system?
instructs the computer about the presence of a network interface card installed in the computer and its address, and controls the flow of data and command traffic to and from the computer. This ability allows the computer to share peripherals
If you can see a copper conductor cable what should you do with the cable?
according to CompTIA A+ guide to hardware Lab Manual:
"Any visible copper is an indication you need a new cable."
-jazzmarazz13
The transmission speed generally is measured by transferring a specific block of data of known size across the transmission medium and timing the duration between initiating transfer and successful receipt of the final datum. For instance, to test the speed of a modem connection, you could create a known file of, say, exactly 1,000,000 bytes, then initiate a transfer of that file across the modem link. If the transfer takes 7 minutes 25 seconds, you have a data rate of 1,000,000 bytes per 7:25, or 2,247 bytes per second.
Data transmission speeds are usually given in bits per second, or bytes per second. For fast connections, this is sometimes expressed as kilobits, megabits, or gigabits per second, or as kilobytes, megabytes, or gigabytes per second. One must be very certain to indicate whether a data rate is counting bits or bytes, and one must be aware that marketers will try to conceal that difference; a marketing data rate may be expressed in bits per second but made to look like bytes, or it may be expressed as the theoretical maximum data rate, rather than the actual data rate. An example of the latter is the 802.11g wireless networking standard, which is always shown as 54 megabits per second. That is the raw data rate; once signaling overhead, error correction, link control, and other non-data information is excluded, the actual rate for data transfer in a perfect connection is closer to 33 megabits per second.
Where can one purchase a portable cable router?
There are several different options in order to purchase a portable cable router. Some names of online shops having portable cable routers in stock include for example "Amazon" and "Best Buy".
How is LAN different from WAN?
LAN is internal. IE, your computer, router, modem.
WAN is external, such as your computer, a server on the internet, a corporate database.
Not to be confused with WLAN, which is wireless LAN
What are the 6 functions of communication protocol?
These days communication is extremely important. A data communications portal fills five major functions for its users. They are: message, sender, receiver, a medium to receive a transmission, and a portal.
Can you hook more than one computer to one DSL modem?
No, unless you set up a network with router. Check here: Ethernet Home Network Setup Tutorial http://www.home-network-help.com/home-network.html Wireless Network Setup Tutorial http://www.home-network-help.com/wireless-network.html No, but you can network more than one computer on the same DSL modem.
What is the difference between ipconfig and ping?
Ipconfig and Ping both are commands of command line interface (CLI) .IPconfig is used to display all network configuration values . Ping is used to check whether a host can send or receive packets.
Does a Network Bridge have it's own hardware firewall like a router?
Some network hubs have them installed for protection
How is it possible for a network to uphold a maximum speed?
This is because different UTP wires can be used. Each of them will run at a different speed and can be used for different things. This allows you to have different things to go on at once.
How do you check connectivity between 2 PCs?
to connect two pcs u'll be needing a cross-crimped LAN cable or a wi-fi router with wi-fi enabled pcs..
using a cross crimped LAN cable:-
just plug-in the cable into the ethernet ports of the two pcs.then, make sure both the pcs have the same workgroup name.to do this, u've to go to start->right click on my computer->properties->change..
after doing so,u'll have to change the ip addresses of both the pcs.go to network connections, right click on the network connection, proerties and then select TCP/IP n select properties..change the ip address of one PC to 192.168.1.11subnet mask to 255.255.255.0and that of the other to 192.168.1.12subnet mask to 255.255.255.0leave the DNX server as it is..all done, restart the computers to see both the computers connected..to share folders, right click on them n go to properties, sharing and enable sharing..make sure u've turned off firewall settings..that's it.. this should work..just ask any doubts n 'll try helping u out..
What is the max number of ports on a switch?
The minimum number of ports on most brands of switches is four. While there is no industry rule that limits the number of ports on a single switch, practical application has shown that a minimum of four ports is about right.
What is the role of the address field in a packet travelling through a datagram?
There are two address fields. Source is the IP address the packet came from and destination is the IP address the packet is meant to be delivered to.
Advantages and disadvantages of Storage area network?
One disadvantage of using a Storage Area Network is that it would be very difficult to keep up your data if it breaks down.
The disadvantage is price, with regards to stability, funtionality and speed, it's second to none.
The address is used to identify the sender and receiver in an ip packet header?
That is called an IP address.
What networking equipment is usually found in the core of a campus Network?
High-end layer 3 switches or routers
What is the color code of straight cable and cross cable with images?
I had to create patch cables in my Infotech class and had to memorize at least straight cables. starting from pin 1 (left to right)
Straight-Through: White-Green, Green, White-Orange, Blue, White-Blue, Orange, White-Brown, Brown
White-Green is pin 1 and Brown is pin 8
Cross-Over Cable: White-Orange, Orange, White-Green, Blue, White-Blue, Green, White-Brown, Brown
What is the difference between a wireless NIC and an Ethernet NIC?
Wireless is just that; it's a wireless connection to your modem or router, which works by sending information through the air, much like cell phones or radio. By that same token, it is subject to interference, and people other than yourself may be able to remotely access your Internet connection if they can get past whatever security you've set up for it.
Ethernet cable on the other hand is a physical cable for sending the same information; because it is not subject to the same interference as wireless, it is more reliable. Furthermore, if you make it so that you need to physically connect with a router, you can completely prevent the above scenario of someone hacking into and using your Internet connection through wireless.
However, getting that physical connection can be arduous in a household with multiple computers because you need to find a way to get the cable from those computers to the router; avoiding this one-time hassle is why many people choose to use wireless instead.
Millions of computers around the world are connected by a network of networks?
Yes, that's true, you've just described the internet.
