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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
Which protocols can be used to provide secure communications between a web server and client?
Hyper Text Transfer Protocol Secure [HTTPS]
It depends on which type of cable you are using. For UTP and STP it's 100m, for fiber optics it can be as far as 40 km (single mode), for coax is 175 m for thinnet and so on.
In order to gain illegitimate access to a network attackers often by-pass access control lists by?
switching off your computer
140.128.0.0 (10001100 10000000 00000000 00000000).
CAT7 cable is short for Category 7 cable. This network cable is used as a cabling infrastructure for certain networks. It provides performance of up to 600 MHz and can be used up to 100 meters.
What is your computer's default gateway?
Bring up a command prompt, type in the ping command with the address of the default gateway. You can find that information by using ipconfig /all in windows, or netstat, or ifconfig in Linux/Unix.
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)
What is the role of QoS in a convered network?
Establishes delivery priorities for different communication types in a net work
If you want some more information on communication try checking out 3GC Group. They define convergence communication and the role of QOS in a converged network.
See related links
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.
Cables used in a star topology?
A star topology is a method of connecting several computers to one another in a network. The cables used in a star topology are twisted pair cables or coaxial cables. Coaxial cables would be the cheapest solution.
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.
What is used to separate the host address portion of an IP address from the network address?
The subnet mask is used for this purpose. It indicates how much of the address is for network, and the remaining part is for the hosts.
transport
Which network class can support the most hosts?
The classful network A provides 16,777,216, the most available in classful networks.
Unfortunately a class A network only allows for 256 possible networks.
This is of course IPv4 stuff
Remember the entire IPv4 address space is 32 bits wide
In class A the network mask is 255.0.0.0 meaning that the first octet or eight spaces are reserved for networks and the remaining 24 bits are available for host.
OK so the number of host are 2^24 or 16,777,216 English 16 million 777 thousand and 216 hosts
And don't forget all networks and subnets require reserving the first and last address for the network and the broadcast address.
Mesh topology minimum required number of computers?
The minimum needed to make the mesh. "Mesh" could refer to several types of groups of computers. There is grid computing, where a large number of small computers all work in parallel. Modern supercomputers, like those used by physicists and weather forecasters (seriously), use grids. Another is distributed computing. Nearly identical in description, the difference is in parlance. Grid may refer to large numbers of computers at one company under control of a dedicated group, where distributed computers usually means dispersed computers. An example might be many computer systems at top research universities working on the same problem. Another is cloud computing. Clouds are groups of computers not necessarily working together on something. The Internet is one example. Seti@Home is famous for harnessing the individual power of millions of (simple, low-power) computers throughout the Internet cloud to create an ultrapowerful distributed grid. You no longer need to create your own supergrid software. You can hire a company like grid.org to solve your problem. For example, analyzing chemicals to see if they'd have any effect on cancerous cells.
How are computers on a LAN connected together?
They're usually connected by exclusive hi-speed phone lines. The phone lines do not connect to any phone network - just to each of the other computers. This makes the WAN a secure network for transferring data between sites.
Computer networking is an engineering discipline that intends to analyze communication method among many computer systems that are connected or networked together to exchange information. This may depend on the theoretical application implementation like computer sciences and telecommunication.
What is the maximum length of cat 5 cable?
Roughly about 325 feet or 100 meters. That is the suggested maximum length. Some installations have achieved longer. The longer it is, the less reliable it is (ie packet delivery problems).
You could throw a switch in the middle to achieve 600 feet if needed.
What is meant by host in computer network?
A host is an internet term in which a created website is placed on a server provided by a 2nd party. The website created is then displayed on the www. In this case, the 2nd party is the host. For example, bluehost, justhost, godaddy.com.
What are some applications that can benefit from a network that has VLANs?
Encrypted communication between 2 points.
What is the difference between cat6 and cat 7 cable?
1. CAT6a is the improved version of the CAT6 cable.
2. Both Gigabit Ethernet up to 100 meters.
3. CAT6a is rated for up to 10Gigabits while CAT6 is only rated for 1Gigabit. It is able to achieve this because it operates at 500Mhz; twice that of the 250Mhz operation of the CAT6 cables. CAT6 cables may be able to achieve 10Gbps but only in when short lengths of cable are used.
4. CAT6a has twice the bandwidth of CAT6 cables.
5. CAT6a is better at resisting alien crosstalk compared to CAT6.
6. CAT6a cables are muchthicker compared to CAT6. With the added size of CAT6a comes a significant increase in weight, which affects how many cables you'll be able to fit into a cable tray, as well as where you can place them. Cable tray capacity is drastically reduced when you're using Cat6a cable as they also require a larger bend radius.
- CAT6a costs a lot more compared to CAT6 (approximately double). However, CAT6a is your best bet if you want some future proofing and can afford the extra cost; doing so saves you from having to gut your walls again once CAT6 cables are no longer sufficient for your needs and you need to upgrade
