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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 a WINS server?

Windows Internet Name Service (WINS) is Microsoft's implementation of NetBIOS Name Service (NBNS), a name server and service for NetBIOS computer names. Effectively WINS is to NetBIOS names, what DNS is to domain names — a central mapping of host names to network addresses. Like DNS it is broken into two parts, a Server Service (that manages the encoded Jet Database, server to server replication, service requests, and conflicts) and a TCP/IP Client component which manages the client's registration and renewal of names, and takes care of queries.

What is the best situation for each routing protocol RIP IGRP EIGRP OSPF?

RIP - Only for small networks or those with underpowered hardware that either don't support or don't have the resources for a better routing protocol.

IGRP - Basically outdated and supplanted by EIGRP. Again, useful if you can not use EIGRP due to router limitations.

EIGRP - Useful in Cisco-only networks of basically any size. EIGRP is an extremely robust and efficient protocol that suits nearly any need other than inter-organization routing.

OSPF - Useful everywhere. It's standardized, so it's not limited to a particular vendor. Most appropriate in large multi-vendor networks. It has a higher CPU load than EIGRP does, and it requires more granular control from an administration perspective.

Can you get your ip number from your computers model number?

NO an IP is assigned by a router or modem for determining the computer address for access to a network if you mean findinng out what your ip address is type whats my ip address in google

Can a single desktop be setup for wireless connection alone?

I have a laptop and it is the only computer in my house and it is set up wireless with a router, the router is hooked into the modem.

What is a ADAT connector?

Optical otherwise referred to as Alesis Digital Audio Tape (ADAT) is a format used for recording 8 tracks of audio at once.

What switching technique allows you to funnel traffic belonging to more than one VLAN through a single switch interface?

The answer is 'Trunking'. The definition of trunking is = The aggregation of multiple logical connections on one physical connection between connectivity devices. In the case of VLANS, trunking allows data from multiple VLANS to share interface on a switch.

Network + Guide To Networks Review Question Chapter 6 #18

What is the the 7 layer burrito at Del Taco?

Beans

Rice sour creme guacamole lettuce cheese tomato

What are the function of LAN MAN and WAN?

A LAN, or "Local Area Network" allows multiple computers within a small area, such as a home or office, to interact with each other, and common accessories such as printers. A MAN or "Metropolitan Area Network" is used in a campus or city to allow access across larger areas, and is often used in universities. A WAN or "Wide Area Network" allows access throughout very large areas, and includes the Internet

What companies assist in network performance management?

One of the biggest companys is EAN which means Employee Assistance Network. They got over 30 years experience and have a 24-hour emergency response and 300 affiliate providers.

If you have installed two network cards in your PC will your PC have two IP addresses?

Yes. Each MAC address (each network card has its own MAC address) requires an individual IP address on a network.

In XP you can bridge the connections in Network Connections, but I have never actually figured out why this is preferrable (perhaps if each card is connected to separate networks). This however on the same network will show no improvement unless ran thru a different router using a different address with a different subnet as XP will only default to one card or the other and will not use both at the same time.

What is the voortman iportal address?

it supposedly is https://iportal.voortman.com , good luck really hard to get the search engines to find

Explain the Concept of multi-protocol encapsulation in ATM networks?

Multiprotocol Encapsulation over ATM From Wikipedia, the free encyclopedia

Multiprotocol Encapsulation over ATM is specified in RFC 2684. It defines two mechanisms for identifying the protocol carried inATM Adaptation Layer 5 (AAL5) frames. It replaces RFC 1483, a standard data link access protocol supported by DSL modems.

RFC 2684 describes two encapsulation mechanisms for network traffic: Virtual Circuit Multiplexing and LLC Encapsulation. Either mechanism carries either routed or bridged protocol data units, and DSL modems often include a setting for RFC 1483bridging. This is distinct from other "bridge modes" commonly found in combined DSL modems and routers, which turn off the router portion of the DSL modem.

In VC Multiplexing (VC-MUX), the hosts agree on the high-level protocol for a given circuit. It has the advantage of not requiring additional information in a packet, which minimises the overhead. For example, if the hosts agree to transfer IP, a sender can pass each datagram directly to AAL5 to transfer, nothing needs to be sent besides the datagram and the AAL5 trailer. The chief disadvantage of such a scheme lies in duplication of virtual circuits: a host must create a separate virtual circuit for each high-level protocol if more than one protocol is used. Because most carriers charge for each virtual circuit, customers try to avoid using multiple circuits because it adds unnecessary cost.

In LLC Encapsulation the hosts use a single virtual circuit for multiple protocols. This has the advantage of allowing all traffic over the same circuit, but the disadvantage of requiring each packet to contain octets that identify the protocol type, which adds overhead. The scheme also has the disadvantage that packets from all protocols travel with the same delay and priority.

RFC 2684 specifies that hosts can choose between the two methods of using AAL5. Both the sender and receiver must agree on how the circuit will be used, the agreement may involve manual configuration. Furthermore, the standards suggest that when hosts choose to include type information in the packet, they should use a standard IEEE 802.2Logical Link Control (LLC) header, followed by aSubnetwork Access Protocol (SNAP) header if necessary.

The AAL5 trailer does not include a type field. Thus, an AAL5 frame is not self-identifying. This means that either the two hosts at the ends of a virtual circuit must agree a priori that the circuit will be used for one specific protocol(e.g., the circuit will only be used to send IP datagrams), or the two hosts at the ends of a virtual circuit must agree a priori that some octets of the data area will be reserved for use as a type field to distinguish packets containing one protocol's data from packets containing another protocol's data.

Does encoding occur at layer two of the osi reference model?

the physical layer (layer 1) manages hardware connections, handles sending and receiving binary signals, and handles encoding of bits.

Can 2 email addresses have the same ip address?

Absolutely. Email addresses do not require IP addresses themselves in order to function. You can both have several PCs logged into the same email account, and have one PC logged in to several email accounts all at the same time.

How do you get the port number from a number IP address?

A full numeric IP address with port number is XX.XX.XX.XX:PPPP where the "X"s are the IP address and the "P"s are the port number.

What is a wireless world?

Its WI-Fi which is using internet without like computer or laptop for example people use Wi-Fi in phones,IPods,Pads,and Ect.

Why is it important to have NIC as a communication device?

It is important to have a NIC as a communication device because it serves as the gateway of information that you send/receive on your computer. Without it, you won't be able to interact with other computers or the Internet.

What are the common problems with DHCP?

It gets complicated when people try to use 2 and 3 scopes. People only having an address pool of maybe 5 but then trying to connect 6 clients. The security issue on wireless of a neighbour cracking your wpa and getting dhcp to hand out credentials. Every computer gets a different IP every day, can be annoying as some network software wants to work with ip address and not computer names, then you have to go to the computer everyday to get the new IP (though you'd just put this computer static)... Cant think of anymore off hand.