0
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 values are used when configuring HyperTerminal for connecting to a Cisco router's console port?
The port that is connected can either be COM1 or COM2 depending on the communication port.
What is more costly reacting to a security incident or preventing a security incident?
Reacting to a security incident is pretty much always more expensive than preventing it in the first place. Realize that part of the expense of reacting to a security incident is doing what you should have done to begin with, so you will have to pay that expense whether you wait for the incident or not. On top of that you have the expenses of identifying the incident, documenting it, recovering from it, lost time, lost resources, lost reputation, and in some cases fines and penalties if you have failed to protect personal information belonging to customers.
Using The ipconfig Command in Command Prompt.
Syntax
C:\Users\
Main syntax - ipconfig
The proper syntax is IPCONFIG /all
The slash-all shows everything.
Do a IPCONFIG /? for all the commands used.
ipconfig
802.11a 802.11b 802.11g 802.11n for more information google =D
What are the advantages and disadvantages of using wired network?
A wired network is more reliable and has generally a higher bandwidth (is faster..) than a wireless network; while it constraints to the availability and length of connection cables, can be more expensive than a wireless network and may not fit specific situations such as reaching some remote areas or being used with mobile devices
A network that connects computers in a limited geographic area is called a local area network?
yes, or more commonly known as LAN
What is the American Registry for Internet Numbers involvement in Internet public IP addresses?
what is American registry for internet number involvement with the internet public IP addresses
What is the function of the forward lookup DNS zone in the DNS name resolution pro?
I think the forward look-up zone is use to convert host name to ip address of a pc in our network
What are the differences between segment packet and frame?
Theoretically Data Link Layer puts packet into frame by adding header and tail to the packet but how is it possible when you take into consideration CCSDS packet definition:
"
A packet is a block of data with length that can vary between successive packets, ranging from 7 to 65,542 bytes, including the packet header.
Packetized data are transmitted via frames, which are fixed-length data blocks. The size of a frame, including frame header and control information, can range up to 2048 bytes.
"
According to this, frame is smaller than packet, so how can you put packet into frame??
The arrangement of the computers in a network is called the?
Without knowing a bit more about the context, probably "topology".
Common network topologies are ring, star, bus and mesh.
Does having two network cards increase internet speed?
Simply having two network cards does not increase you internet speed.
If those cards are connected to the Internet, they can increase your speed, your total speed being, in theory, the sum of the speeds of the connections attached to each of your two network cards. This setup however is problematic for home users, as requires a mechanism to balance the load on the two cards, can pose problems if you get to have multiple IP addresses etc.
Most likely, your answer is "no". However, if you wish to connect to multiple ISP's and increase your network throughput that way, look into "load balancing" and "multi homing".
Disadvantages of wavelength-division multiplexing?
Disadvantage: Complex transmitters and receivers. They must be wide-band, which means they are more expensive and possibly less reliable.
What are the Advantages of wireless signal transmission?
The main advantages of wireless communications is the ability to stay in contact and be informed while mobilized. The main disadvantage is that there is less time for yourself when equipped with a wireless device as others can always call you. Safety is another issue as cell phone related vehicle deaths are on the rise due to distracted driving while on the device.
Do you need a network card to connect to the internet?
NO If you intend to connect to the internet using wireless then you will need access to a wireless access point, whether it is one you provide or one you use at a business or work location.
What kinds of devices are servers connected to a network with the sole purpose of providing storage?
NAS
What is a computer network located within a limited geographical area?
Typically that would be a LAN (local area network)
Specialized Device for exchanging data amongst class based Networks & Subnetted (multiple parts of one network) is Router.
Symmetric encryption involves what key?
A shared secret key
and other words;
Both the sender and receiver share the same key
What layer of OSI model is transceivers on?
Transciever works on the Physical Layer(Layer 1) of the OSI because its basically a repeater or a MAU\ Multi Station Access Unit
True or false-computers are connected with a network of wires on the internet?
Most are connected by wires, some are connected by a wireless connector ('Dongle'). Two of my friends have wireless dongles.
Why twisted pair wire is called twisted pair?
Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other. Each connection on twisted pair requires both wires. Since some telephone sets or desktop locations require multiple connections, twisted pair is sometimes installed in two or more pairs, all within a single cable. For some business locations, twisted pair is enclosed in a shield that functions as a ground. This is known as shielded twisted pair (STP). Ordinary wire to the home is unshielded twisted pair (UTP).
Twisted pair is now frequently installed with two pairs to the home, with the extra pair making it possible for you to add another line (perhaps for modem use) when you need it.
Twisted pair comes with each pair uniquely color coded when it is packaged in multiple pairs. Different uses such as analog, digital, and Ethernetrequire different pair multiples.
Although twisted pair is often associated with home use, a higher grade of twisted pair is often used for horizontal wiring in LAN installations because it is less expensive thancoaxial cable.
The wire you buy at a local hardware store for extensions from your phone or computer modem to a wall jack is not twisted pair. It is a side-by-side wire known as silver satin. The wall jack can have as many five kinds of hole arrangements or pinouts, depending on the kinds of wire the installation expects will be plugged in (for example, digital, analog, or LAN) . (That's why you may sometimes find when you carry your notebook computer to another location that the wall jack connections won't match your plug.)
