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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

How do you install VPN and What are the requirement to install VPN?

Verizon FiOS es un servicio de comunicaciones integradas que opera en una red de fibra óptica, ofrecido en algunas áreas de Estados Unidos por Verizon. Verizon atrajo la atención de los consumidores y los medios en el área del ADSL al ser el primer operador de los Estados Unidos en ofrecer Fibra Óptica a los hogares

yazing . com / d eals / verizon /adrian 33

If a device does not know its own IP address can it still use ARP?

No - in order to use ARP it would have to send a broadcast for information with a return address of itself. Since it doesn't have an IP address it cannot do that. Furthermore, without an IP address it couldn't participate on the network.

What is routable ip address?

Routable addresses is a type of IP addresses which can be accessed outside of your network. For instance, 192.168.*.* is not routable and can be accessed only within your LAN. From another side 66.294.91.104 is google's IP address and can be accessed not only within google's LAN but also from any point of Internet (WAN).

At what TCP IP layer does a MAC address function?

I'll help you out but hold on a sec I'm tryin to land this monkey.....

MAC addresses formulate at the Kenny, tip of the foreskin, so i would say the top layer.

Can you connect a nas drive to a network extender?

You should be able to but it all depends on particular set of hardware you are running.

Why UDP is preferred over TCP for real-time applications such as telephone.?

TCP

v No loss

v Retransmits all lost messages

v Potentially large latency

UDP

v Potentially unbounded loss

v Does no retransmission

v Minimal latency

à Neither of them is what you want for streaming applications

Solution

v UDP with

o Congestion control

o Reliability control (error protection)

v How?

o Keep UDP throughput ~ to TCP

o By using FEP (forward error protection) and ARQ (automatic repeat request)

v Advantage

o Can recover from loss in time independent of link RTT

o Unequal protection: more important data is better protected

o Pre-roll buffers to cope with increased delay for streaming applications

v Disadvantage

o Pay overhead

o Increased delay

o Poor quality for real-time applications

Diifference between distribution layer switch core layer switch?

Core layer switch forms the heart of the network. it interconnects all the subnetworks formed by distribution switches. It also has special modules such as IDPS. It has very high switching capacity when compared with normal (Access ) Switches.

Distribution switch forms the intermediate layer between access and core switch.

What class has subnet mask 225.225.225.0?

If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.

In classful addressing the class of the address can be found by shifting the copy of the address bits to the right?

Shifting to the right won't accomplish anything. To find the class of the address, look at the first octet in the address. You can either look for the range of addresses for a class, or look at the first 3 bits in the first octet:

First octetAddress Class0-127Class A128-191Class B192-223Class C224-239Class D240-255Class E

0nnnnnnn. First octet class A range (first bit is 0)

10nnnnnn. First octet class B range (first bits are 10)

110nnnnn. First octet class C range (first bits are 110)

It is easiest just to look at the range.

What is udp format?

UDP protocol is a means of transporting data in an unreliable (but speedy) manner. Packets are sent without regard for listening to see if they arrive.

The header of a UDP packet is much smaller than a TCP header because it doesn't have all of the overhead that TCP has, namely, checking for packet receipt, error detection and correction, flow control, etc.

What is meant by network infrastructure?

In the broadest sense, Network Infrastructure includes all the parts that connect one computer to another. In the more common use, Network Infrastructure is the structured cable portion, meaning the cable that connects the wall jack to the corresponding jack in the network room.

What are the best peer to peer programs using bit torrent for music downloading?

I personally use "Azureus" and have found it to be better than any of the others for my needs, the GUI is very simple and easy to navigate and everything is very simple and self explanatory. They also have a very iforative AzureusWiki so if you have any problems you wont have to go far to find a solution.

Its down to you which one you choose though as BitComet, Bitsoup or any of the others may be easier for you to get to grips with, i would try a few and see which 1 you like the best, hope I've helped you somewhat, Craig

How can you tell which ip addresses are network addresses?

If you have the network 192.168.1.0/24, 192.168.1.0 is the network address.

The network address is always the first IP address in a subnet, which may or may not be usable, depending on how the network is used.

The network address is the address that is specified when denoting a network with a subnet mask

192.168.1.4 255.255.255.252

192.168.1.4 /30

The network address is similar to a broadcast address, and some IP implementations will consider it a broadcast address.

Before CIDR was invented (Classless Inter Domain Routing), network addresses were identifiable without knowing the subnet mask.

How can a router split up broadcast domains?

Since a router does not forward broadcast messages it automatically splits up the broadcast domains for all clients connected to them.

Why do fiber-optic systems transmit light by means of internal reflection within thin strands of extremely pure glass?

Under normal conditions light travels in a straight line. Fiber optics can take the light anywhere you want it to go.

What are the ways to share internet?

AdHoc is a way to share internet.

Pretty easy with Win7. Not familiar with Vista or XP.

What is the minimum action you need to take to receive DHCP assigned address?

Your network adapter must configured to receive IP address from DHCP server (default in Windows), also your firewall must allow connection to the port 67.

Is 11.255.255.255 a class A broadcast?

Yes - this is a broadcast address for all subnets in the 11.0.0.0 network.

Why some application layer protocols using a specific transport layer protocol?

This is usually done because of the requirements of the data transfer. For example, FTP (file transfer protocol) will use TCP for transport because we want to make sure the data was transferred reliably. DNS will use UDP because we don't need the handshaking or connection based transport.

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