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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 is data converted into signal?
Analog electrical signals are converted into digital signals by an analog to digital converter (ADC). A ramp is compared to a signal and comparator will send data bits to represent the signal value in digital value compared to a reference internal voltage.
As you may or may not know, a bit has two values, 1 and 0. They represent a current going through a circuit. If the current is running, the value is 1. Otherwise, it is 0. Simple logic. Then there is Binary language, the very primitive way of how the computer communicates. It sends information in 1s and 0s, which then get interpreted. Of course, programming languages can't get pushed through the computer in the words that we see, so the computer must convert it into it's binary language.
Bits do not have values at all. They do however have states, for example, 1= true and
0=false. It cetainly does not represent current going, flowing or otherwise trough a circuit. It is however represent a binary state meaning two states . A COMPUTER DOES NOT CONVERT THIS STATES INTO BINARY LANGUAGE. However this is the language that all machines [COMPUTERS] understand; "1" and "0". Live and learn but do not pass along bad information please.
What are the available switches for ipconfig?
USAGE:
ipconfig [/allcompartments] [/? | /all |
/renew [adapter] | /release [adapter] |
/renew6 [adapter] | /release6 [adapter] |
/flushdns | /displaydns | /registerdns |
/showclassid adapter |
/setclassid adapter [classid] |
/showclassid6 adapter |
/setclassid6 adapter [classid] ]
where
adapter Connection name
(wildcard characters * and ? allowed, see examples)
Options:
/? Display this help message
/all Display full configuration information.
/release Release the IPv4 address for the specified adapter.
/release6 Release the IPv6 address for the specified adapter.
/renew Renew the IPv4 address for the specified adapter.
/renew6 Renew the IPv6 address for the specified adapter.
/flushdns Purges the DNS Resolver cache.
/registerdns Refreshes all DHCP leases and re-registers DNS names
/displaydns Display the contents of the DNS Resolver Cache.
/showclassid Displays all the dhcp class IDs allowed for adapter.
/setclassid Modifies the dhcp class id.
/showclassid6 Displays all the IPv6 DHCP class IDs allowed for adapter
.
/setclassid6 Modifies the IPv6 DHCP class id.
The default is to display only the IP address, subnet mask and
default gateway for each adapter bound to TCP/IP.
For Release and Renew, if no adapter name is specified, then the IP address
leases for all adapters bound to TCP/IP will be released or renewed.
For Setclassid and Setclassid6, if no ClassId is specified, then the ClassId is
removed.
Examples:
> ipconfig ... Show information
> ipconfig /all ... Show detailed information
> ipconfig /renew ... renew all adapters
> ipconfig /renew EL* ... renew any connection that has its
name starting with EL
> ipconfig /release *Con* ... release all matching connections,
eg. "Local Area Connection 1" or
"Local Area Connection 2"
> ipconfig /allcompartments ... Show information about all
compartments
> ipconfig /allcompartments /all ... Show detailed information about all
compartments
Is two dsl modem work at same telephone line at same time?
On a single phone line, no.
But alot of times in the USA the phone line coming into the house actually has 2 lines on it, these can be set to use one or the other line, allowing two modens to function in that house, even though they are actually using different lines. (does require the activation of the second phone line with your phone carrier, often a lesser cost than the first line was)
What is another name for server?
A rack or collection of hardware, the software is the component that makes it a server. What software/protocol depends on the type of server: DNS, Mail, Web servers etc.
•If the hosts on a network using private IP addresses need to access the Internet, a problem arises because the private IP addresses are not allowed on the Internet. •The solution is to use NAT (Network Address Translation), which uses a single public IP address to access the Internet on behalf of all hosts on the network using other IP addresses.
Which protocol translates a website name such as wwwciscocom into a network address?
It's called DNS and it uses both TCP and UDP.
WHAT IS A NETWORK IN YOUR HOME THAT CONNECTS TO ALL YOUR DIGITAL DEVICES?
a Local Area Network or LAN
They are twisted just to avoid as mush electrical and magnetic interference between them, which is created when the current flows through them.
Answer
Conductors within cables are twisted in order to allow the cable to be flexible.
What type of connector does a NIC use?
The most common ethernet connector on category 5 and 6 cabling is called RJ-45.
What is an example of a network switch device?
I think the best way to answer your question is to point you to this Cisco Web Site:
http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_1-2/switch_evolution.html
good article
What is the default password for linksys router?
IP stands for Internet Protocol, and is the means of 2 computers sending information to one another. The IP address for a Linksys router is usually 192.168.11, and may be the IP address for other manufacturers as well.
What are applications of multiplexers?
A multiplexing design can be used for a wide variety of applications.
Computers:
Networking, FireWire, USB, SATA, E-SATA, SPDIF, S-Vid, All utilizes different forms of multiplexing in order to carry a lot of information on very few wires. This makes connecting of these devices very easy.
Stereo systems:
CD-Players utilizes multiplexing in order to transfer data/music digitally to a digital input.
Multiplexing of digital signals ensures less to no loss of quality in the transfer.
Amplifiers with digital output. Any sound system with digital output utilizes multiplexing. This makes it easily possible to carry 6 channels of sound in only one fiber cable.
General:
Multiplexing is often utilized over large distances. It may be of interest to measure the temperature 6 kilometers (4 miles) down into an oil drill hole or other. Temperature can easily be converted into an electrical voltage but this voltage will be changing on its way up to surface due to capacitive loads and interference. The result may give a very wrong readout of temperature. By multiplexing signal, we can transfer digital data instead. Digital data are then interpreted via a de-multiplexer and we get an accurate result every time.
Speed of multiplexing decreases over distance. The farther away, the slower speed.
uses of a multiplexer correctly
The use of Multiplexer is becoming a common technology equipment. What should pay attention to when use Multiplexer? This article show the details of using multiplexer：http://www.ingellen.com/blog/the-use-of-multiplexer.html
What is computer telephony integration?
techniques behind computer telephony integration "Computer Telephony Integration (CTI), is a concept that enables computers and phone systems to communicate with each other. In fact, CTI effectively merges the functions and features of each of these two technologies into one integrated system. CTI in its simplest terms includes placing and answering voice, fax, and data calls." - Database Systems Corp. reference Computer Telephony in Related Links below.
Suppose you establish a home network and you want all three of your computers?
Then they would be connected, simple as that. They would be able to have close to the same IP Addresses. They would also be able to transfer documents through the network to share with other computers.
What are the disadvantages of using a computer network?
you can meet bad people
- Viruses
- Pedofiles
- dont know who your talking to
Cable is used to connect different devices?
cable used for networking are coaxial cable,twisted pair cable,fibre optic cable twisted pair is divided in networkinn shielede and un shielded utp cable is most commenly used in networking, but optic fibre travel speed of light so it is very fast compaired to other cable so most commpany use optic fibre cable in order to aviod data loss
cable used for networking are coaxial cable,twisted pair cable,fibre optic cable twisted pair is divided in networkinn shielede and un shielded utp cable is most commenly used in networking, but optic fibre travel speed of light so it is very fast compaired to other cable so most commpany use optic fibre cable in order to aviod data loss
Which topology is the most commonly used server network topology?
The most common LAN topology is that of a "star." In a star topology, each computer, or "node", is connected to a central hub. This is more reliable than a more classical "ring" topology, because a node failing will not bring down the entire network. A bus topology is arguably more reliable, but has poorer performance.
Bluetooth is a wireless technology standard for short-distance data exchange. It was developed by Sweden's telecom company Ericsson in 1994. Now, Bluetooth is managed by the Bluetooth Special Interest Group.
Copper conductor
'y' - PVC Insulation
'W' - Steel Round Wire Armour
'y' - PVC Outer Sheeth
That stands for "personal area network". These networks tend to have a shorter range than a typical LAN.
What is the purpose of using the copy tftp flash command on a router?
What is the purpose of using the copy tftp flash command on a router? to back up the current IOS image to a server to restore the IOS image from a server to back up the router configuration to a server to restore the router configuration from flash
