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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 does .ac stand for after URL?
It stands for always connected
It stands for academic institutions/universities.
Maybe you are talking about "boot.ini".
This is an example of a boot.ini file: [boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(2)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Microsoft Windows XP Professional" /fastdetect
Where menu options are stored.
For example if you have two operating systems installed in your hard disk. The NTLDR shows the boot menu where you
have to select which operating system you want to start. The boot menu is the boot.ini.
What is a text version of an IP address called?
IP Addresses don't necessarily have text addresses. http://www.ansers.com has an IP address, it is currently 216.8.179.26. You can see the IP address of any website by using the ping utility on any computer. If you want your IP address to have a text translation you could sign up for a service like DynDns. DynDns is a free service and can be found at dyndns.org. The format you are used to seeing IP addresses in, such as 192.168.1.100, has a binary equivilant. Really, the only reason we use the decimal version is because it is easier to read and remember. 192.168.1.100 would be 11000000.10101000.00000001.11001000 in binary.
What are classless routing protocols?
More commonly referred to as classless routing behaviour in reference to protocols. examples are ripv2, eigrp, ospf, isis etc. classless routing protocols submit subnet information in the data they send to other routers. therefore, variable subnet masks can be applied other than the default classful subnet mask. i.e, if the first two bits in the first octet are 0 then it is a class A address, and the first octet only, /8 or 255.0.0.0, is the network portion. hence why the private routing address 10.0.0.0 extends all the way to 10.255.255.255. with classless routing behaviour this can be any subnet mask.
Power over Ethernet is a system whereby a small amount of electrical current is sent over the network cable. This is done so that some devices can draw power from the network itself thereby eliminating the need for an electrical outlet. This is generally only used for low-power devices such as cameras, routers and the like in places where it would be inconvenient or expensive to run mains power.
What is the advantages of routing protocol?
There are two types of communications. connection oriented where there is direct line of communication between the sender and the receiver like a telephone n/w. The other is the connectionless communication. This is how most of the internet is arranged. The sender sends the packet to the destination and the packet must find it's way through the network. Routers are intermediate nodes the packet must pass through to reach it's destination. These nodes can be pc's, servers etc. Routers have to check whether the packet they just received is meant for them or for someone else. If it is for someone else then they run special algorithms called routing algos which compute which will be the shortest path for the packet to reach it's destination, and then they they send the packet in that direction. There can be several other functionalities that one can load into a router eg. firewall settings for application level or circuit level gateway etc.
The term "router" refers to either a woodworking tool or a computer networking device. In carpentry, a router is used to hollow out a section of wood whilst in computing, a router connects two, or more computer networks together.
Role of OSI application layer?
Think in terms of HTTP (HyperText transfer protocol), FTP (file transfer protocol), DNS (domain name services) and DHCP (dynamic host configuration protocol).
The application layer is the highest level, layer 7 of the OSI an ISO (International Standards Organization) (Open Systems Interconnect) model. ISO falls under the ANSI (American National standards Organization). This is an old standard and I believe the layers have been redefined once or twice over the years. Generally you can think of the application layer as what is on the screen in front of you. If you download a web page, open an email or get an IM (instant message) from someone you are looking at the application layer. Remember that the presentation layer 6 just below application may have done some data formatting, decrypting or conversion of some kind before the data is actually visible at the application layer.
Clear as mud?
Why is it important to limit the number of open ports a system?
The more ports you have open on a system the larger the attack surface is. This means the more chances a malicious attacker has to get into your system and do something bad.
It is similar to having holes in a boat - the fewer, the better.
Packet switching and circuit switching?
Circuit switching is the technique used in voice communications. Circuit switching sets up a - physical or copper path between the two parties involved. This path remains until the call is completed, and for the duration of the call, it is dedicated solely to the call. Establishing a circuit can involve a long set-up time while the common carrier searches for a free copper path. No data can be transmitted until the circuit is established. Once established, information entered at the calling point is immediately conveyed to the called point. Packet switching evolved from message switching, but it is much faster, and therefore, better suited to interactive data transfer. Like message switching, packet switching requires no copper path. Instead of sending an entire message to the switching nodes, however, the source node divides the message into packets of a fixed length, and transmits these packets. Each packet has a header that includes the address of the destination node, as well as a sequence number, indicating the position of the packet in the message.
In packet switching, the source node transmits packets to the first switching node in the network. This node may hold the packets for a short period of time, less than a second. Its purpose is to move each packet it receives as fast as possible by the best available route. It holds each packet until it has been successfully received by another node. - Jvy (MKJB)
It's the definition of the CAT 5 cable connections for LAN wiring. RJ45 connectors look much like telephone connectors but can connect 8 wires as opposed to the 4 pin telephone connectors. See the link below for technical information.
A host with the IP address 172.32.65.13 and a default mask belongs to what network?
Since this is a class B with the default subnet mask the network would be:
172.32.0.0
A LAN is a local area network, meaning it is confined to one place.
LAN (Local Area Network) is a computer network covering a small geographic area, like a home, office, school, or group of buildings.
it's high speed (1000 mbps)
A WAN is a wide area network that spans large areas or distances, such as the internet that goes everywhere.
WAN (Wide Area Network) is a computer network that covers a broad area (e.g., any network whose communications links cross metropolitan, regional, or national boundaries over a long distance).
It's Less speed 150 mbps
Lan is better for connecting in local area business where as Wan is better to connect is world wide business.
In my view WANOS is a best networking service provider & also with an affordable price.
Your question involves hundreds of other questions - you should check out wikipedia or smth..
http://en.wikipedia.org/wiki/Data_transmission
What are application of computer in networking?
Computer act as end devices between whom the communication is established by networking process.
What is computer that provides services and connections to others on a network?
A file-server. File-servers are essentially fast computers with massive hard-drives. Some network terminals only consist of a screen and keyboard - no hard-drive or CD-ROM drive. These upload their programs from the hard-drive of the file-server, and direct output to a printer. The file-server and printer are accessible by all terminals.
Why do you need standards for network management?
Standards are required in network management so that the devices manufactured by different vendors can inter operate with each other.
Which network need terminators?
See the related link to learn about which type of network needs 'terminators' to function correctly.
How do you fix your network settings on your PC?
You can use the following command to change network settings in your computer: 1) Go to run. 2) Write 'ncpa.cpl' command.
A digital signal requires a repeater, which retransmits the signal in its original form, and an analog signal requires an amplifier, which increases the strength of both the signal and the noise it has accumulated.
In tcp ip the protocol that garuntees packet delivery is ip?
No, the protocol that guarantees packet delivery is TCP.
No, the protocol that guarantees packet delivery is TCP.
No, the protocol that guarantees packet delivery is TCP.
No, the protocol that guarantees packet delivery is TCP.
