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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 packet oriented data service?

A method of data transmission in which small blocks of data are transmitted rapidly over a channel dedicated to the connection only for the duration of the packet's transmission.

How many networks in 10.0.0.0?

You can keep it as a single network, or divide it into separate subnet (sub-networks), depending on your needs.

You can keep it as a single network, or divide it into separate subnet (sub-networks), depending on your needs.

You can keep it as a single network, or divide it into separate subnet (sub-networks), depending on your needs.

You can keep it as a single network, or divide it into separate subnet (sub-networks), depending on your needs.

What are the types of services provided by LLC layer?

The Logical Link Control specifies the following mechanisms

1. for addressing stations across the medium

2. for controlling the exchange of data between two users.

There are three types of services provided by the Logical Link Layer. They are

1. Connection mode service - A logical connection is set up between two users.

2. Acknowledged connectionless service- No connections are involved. But data grams are acknowledged.

3. Unacknowledged connectionless service- Operates in datagram style. No guarantee for the delivery of data. The service does not include flow control or error control mechanisms.

Compare and contrast the advertisements by RIP and OSPF?

RIP is an Interior Gateway Protocol and the most widely accepted routing protocol. It is also known by the name of the Unix daemon program routed. RIP is straightforward: it arranges to have routers to broadcast their entire current routing database periodically

OSPF is a link-state algorithm. OSPF specifies a class of messages called link-state advertisements (LSAs) that allow routers to update each other about the LAN and WAN links to which they are connected. When a change is made to the network, LSAs flow between routers.

OSPF routers receive link-state updates and store them in a topology database in memory.

OSPF networks as an end-station-to-router protocol. OSPF addresses all the deficiencies of RIP, without affecting connectivity to RIP based networks.

What lists the 568b pinout sequence of the wire colors from pin 1 to pin 8?

White orange, orange, white green, blue, white blue, green, white brown, and brown

How long should a 2wire modem last?

A good general rule is that any electronic is only *designed* to last for the duration of it's warranty, and not much longer.

My two 2wires lasted 2, and 3+ years respectively. The first had to be replaced because Qwest upgraded their DSL, making it incompatible.

What is a fiery server?

A Fiery brand server, circa 20th century origins, tower, Blue w silver trim, utilized in small business, made in USA.

Explain the difference between user EXEC and privileged EXEC modes?

Privileged mode has access to the entire router or switch configuration. User EXEC mode only has limited options. Specifically, to do any configuration changes, you need to enter privileged mode first.

Privileged mode has access to the entire router or switch configuration. User EXEC mode only has limited options. Specifically, to do any configuration changes, you need to enter privileged mode first.

Privileged mode has access to the entire router or switch configuration. User EXEC mode only has limited options. Specifically, to do any configuration changes, you need to enter privileged mode first.

Privileged mode has access to the entire router or switch configuration. User EXEC mode only has limited options. Specifically, to do any configuration changes, you need to enter privileged mode first.

Why dots are used to separate ip addresss?

Up until about five years ago, when there were enough Internet addresses for all those who needed them, Internet Addresses were written - 123.456.89. The people realised that the available range of addresses would run out very quickly when mobile phones, cars, refrigerators, etc all had their own Internet Addresses. So a new more expandable system was devised that had Internet Addresses now written as AA:12:BC:17:NM:01:JJ:89.

What is the bandwidth of a signal that ranges from 40KHz to 4 MHz?

Solution

Let fh is the highest frequency and fl is the lowest frequency.

Bandwidth = fh - fl = 4000 - 40 KHz = 3960 KHz = 3.96 MHz

The world's longest optical fiber cable is laid where?

its laid between singapore and marseeile(France).the dist is 10594km

What is padding in tcp segment?

The internet header padding is used to ensure that the internet ends on a 32 bit boundary. The padding is zero.

What is the default password on shaw routers?

Username and Password is listed at the back of your router so take a look at the back on a sticker...

Are Some conflicts made worse by peer negotiation?

Some conflicts can be made worse by peer negotiation.

What is the purpose of the jam signal in CSMA?

The jam signal is a signal that carries a 32-bit binary pattern sent by a data station to inform the other stations that they must not transmit.

What utilities would you typically use to determine the number of hops to a specific destination?

You use the traceroute utility. In Windows, go to the command window, and type tracert, followed by an IP address or a domain name.

You use the traceroute utility. In Windows, go to the command window, and type tracert, followed by an IP address or a domain name.

You use the traceroute utility. In Windows, go to the command window, and type tracert, followed by an IP address or a domain name.

You use the traceroute utility. In Windows, go to the command window, and type tracert, followed by an IP address or a domain name.