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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

Is it possible to connect a wireless router to a Dell Powerconnect 2016 switch?

Yes, it's possible. Connect the wire coming from the switch in the internet port in the router.

What is letter addressing scheme?

A letter addressing scheme has to do with a TCP/IP protocol. Addresses are determined by both decimal and binary counting.

How would you check your Exchange configuration settings to see if they're right?

Once your exchange server configuration is done run the

tool EXBPA.exc .This will give you the correct ficture of

your exchange organization.

Thanks

Yogesh

What is the subnet mask used for?

It is used to tell the machine who it can talk to without the assistance of a gateway.

192.168.1.1/24 or 192.168.1.1 255.255.255.0

Can talk to anyone with the IP of 192.168.1.2-255 withoutthe use of a gateway.

Any requested addressed to someone outside of that gateway will automatically be sent to the gateway for processing.

The network administrator wants to separate hosts in building a into two vlans numbered 20 and 30 which two statements are true concerning vlan configuration?

- TheVLANs may be named.
- The network administrator may create the VLANs in either global configuration mode or VLAN database mode.

If you have client in a different location and want to access that client from server - What is the best way to access that client from server?

Is this a lan or a wan network. Is the client on a different subnet of the network? You could even be talking about a client connected through VPN here... ok, be a bit more specific.

Want to access the client. Would RDP not be the obvious thing..?? You could set the client up to accept incoming connections. You could do a java script that would allow you to just log in and take control of the machine. Be more specific about the network and what sort of access you want.

How do you find mac address of a remote system and how can we say its the correct onewhat is user changes his mac id?

To get the mac address you will need to use Address Resolution Protocol (ARP). Pretty much this will show an IP address and then give you the MAC address of that computers network card.

As for the user changing it. Obviously you cant prevent a user from spoofing a MAC address, but as far as I am aware you cant change it permenently. So I dont think there is very much to worry about there. Also, unless you are dealing with technically minded people, I would doubt that they would even know how to spoof a MAC never mind change it (if its possible that is - which, like I have already said I really dont think it is)

What is the difference between a virtual channel and virtual path?

A virtual channel defines a single point to point connection, identified by its virtual channel identifier (VCI). A virtual path however, is a bundle of virtual channels that share the same end-point. Hence, a virtual path can be considered as a container that contains several virtual channels. Each virtual path is identified by its unique virtual path identifier (VPI). sridhara................

Super computer speed?

No single figure can be given, as this has varied widely over the years with changing technology (e.g. tube, transistor, IC, VLSI), architectural improvements, implementation (e.g. microcode vs. hardwired logic vs. programmable logic devices), etc.

Does the internal format of mailboxes has to be standardized so any POP3 program on the client side can read the mailbox on any mail server?

No.

The POP3 protocol is a network protocol. It is only concerned with the messages sent back and forth between the mail server and the mail client.

The internal format of the mailbox files on the server is only of concern to the POP3 server software. It needs to be able to read the mailbox files so it can send the proper messages to the POP3 client in order to transfer the email.

HTH,

Gdunge

What are the principles of serial data communication?

It means the data can be transfer serially.i.e ,one by one. So it is less in speed.

How many potential IP address are there?

The maximum is approximately A LOT

IPv4 uses 32-bit addresses, which limits the address space to 4,294,967,296 possible unique addresses.

http://en.wikipedia.org/wiki/IP_address

4.3 billion potential IP addresses, not all are available for use.

Page 869 of A+ guide to managing and maintaining your PC
About 4.3 Billion

What is the essential difference between massage switching and packet switching?

message switching: sends the entire message to an alt router route to get to the end user.

packet switching: breaks the message into packets and sends them to the end user, using the path with the lightest load or least traffic at the time of transmit. Packets can be sent in order or not and are re-assembled at the recieving end in the correct order by packet number.

What is message switching?

Message switching is a telecommunications data transfer method that was first introduced in 1961; unlike packet switching that came after, message switching sends the entire message as one unit. To transfer the message, the message is first stored and then transferred via hops until it reaches the destination. Most messages are too large for random access memory (RAM), so the messages are temporarily stored in the hard drive. While message switching is not the primary method for data transfer, because it is slower and experiences delays when sending, it is still used widely with sending email. The advantages of this method are lowerbandwidth costs, better management of network congestion, and the easy transfer of messages to different destinations.

When a user sends a message using message switching, this method first saves the entiremessage and then designates an address for the message, so it knows where the message is going. Once saved, the message is sent to the router, which switches it to the first hop, or node. At each hop, the message is inspected for problems or errors before being sent on to the next hop. The message keeps hopping around until it reaches its final destination.

by muhammad kamran from bannu university number=03369797939

Use of computer networking?

If your business has more than one computer, chances are you could benefit from networking them. A local area network (LAN) connects your company's computers, allowing them to share and exchange a variety of information. While one computer can be useful on its own, several networked computers can

Here are some of the ways a computer network can help your business:

  • File sharing: Have you ever needed to access a file stored on another computer? A network makes it easy for everyone to access the same file and prevents people from accidentally creating different versions.
  • Printer sharing: If you use a computer, chances are you also use a printer. With a network, several computers can share the same printer. Although you might need a more expensive printer to handle the added workload, it's still cheaper to use a network printer than to connect a separate printer to every computer in your office.
  • Communication and collaboration: It's hard for people to work together if no one knows what anyone else is doing. A network allows employees to share files, view other people's work, and exchange ideas more efficiently. In a larger office, you can use e-mail and instant messaging tools to communicate quickly and to store messages for future reference.
  • Organization: A variety of scheduling software is available that makes it possible to arrange meetings without constantly checking everyone's schedules. This software usually includes other helpful features, such as shared address books and to-do lists.

Functions of transport layer?

Transport Layer, this layer allows data to be broken into smaller packages for data to be distributed and addressed to other nodes (workstations). Main functions are multiplexing, De multiplexing, error control, flow control.

What are specialized computers that manage network resources and allow computers to access the network?

Its not a Router.. they only manage traffic on the network. Servers are specialized COMPUTERS that manage network resources and ALLOW computers access to the network.. BINGO!

Sounds like you are talking about a "Router". A router manages and direct traffic on your local network. Routers make your connection faster and easier. It also makes your local network more secure!

What is QPSK?

QPSK = Quadrature Phase Shift Keying In QPSK amplitude are not much.so the carrier is constant. transmission rate is higher when compared with PSK

What Network problems do network monitoring tools show?

network monitoring describes the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator in case of outages via email, pager or other alarms. It is a subset of the functions involved in network management.

While an intrusion detection system monitors a network for threats from the outside, a network monitoring system monitors the network for problems caused by overloaded and/or crashed servers, network connections or other devices.