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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 server backup software?

Server backup software backups and protects all the important files stored on your Windows Server system such as mission critical business files, shared images, shared media files, documents and all system information.

What are the drawbacks for intranet?

  • Overabundance of information
  • Information overload lowers productivity
  • Users set up own web pages

Advantages of printer sharing in network?

There are several advantages of sharing a network printer. One advantage is a printer does not take up space at each person's workstation. Another benefit is not having the expense of buying multiple printers.

What does your Windows firewall do?

Sadly, the Windows firewall does very little, if anything, to help protect your computer.

Of the 25 recognized firewall tests - Windows firewall passed none.

Think of a firewall as having a security guard on every door and window of your home. That security guard only lets the people you allow to enter or leave.

It is a good idea to have a firewall, just it is not a good idea to depend on the windows firewall, there are much better free ones available on the Internet.

What class does a workstation with ip address 203.12.176.55 belong to?

The first octet determines the class, so-

0-127 is Class 1

128-191 is Class 2

192-223 is Class 3

So the IP address 203.12.176.55 is a Class 3 address.

Why is a computer network useful?

Computer networks have several important purposes in the business and personal world. Whether a company or group needs to share resources, files, or even printing capabilities, a computer network will allow for it.

What is the primary responsibility of the web server administrator?

granting and monitoring

maintaining access and security

developing, coordinating, publishing, maintaining, and testing

What is the purpose of an optic fiber?

Fiber Optic is used for telecommunication and computer networking. Fiber optic cables have a much greater bandwidth than metal cables. Data can be transmitted digitally for computer data instead of analogically. There is also a higher bandwidth when using fiber optic.

What is the maximum distance of single-mode fiber?

Depends on the equipment.

Common enterprise grade equipment can transmit up to 10Gb/s of data over a distance of up to 10Km.

Since you need 2 strands of fiber it would be 10Gb of data in full duplex (or 20Gb real throughput)

I would guess some special telecom equipment can go faster but nothing Ive ever looked at goes over 10Gb

The big difference between single-mode and multi-mode fiber is single-mode has a longer range because it is build to a higher specification. A poor comparison would be Multi-mode is like cat 5 and single-mode is like cat 6

What speaker port should you use when connecting a single speaker to a PC?

If you are using a single speaker or two speakers with a single sound cable, connect the cable to the green sound port on the motherboard, which is usually the middle port. A+ guide to hardware 5e pg.397

Where is the Wireless Switch on a HP 6450B laptop?

In HP Probook 6450b, the wireless switch is the wireless led on top of the keyboard, activated/deactived by touch. Colour blue = activated, Red = de-activated.

In case, that HP wireless assistant is saying that WLAN disabled from LAN/WAN switching, then you need to access the BIOS. And un-ticked the LAN/WAN switching. Then, you will be able to control the WiFi from the HP wireless assistant.

What is FTP and what is it used for?

File Transfer protocol is a protocol associated with the transfer of information on the Internet between client computers and file servers. Files may be transferred, downloaded, and uploaded individually or in batch form.

What are the disadvantages of network attached storage?

You only need to buy one copy of any software you wish to use. Software is loaded onto the network drive, and is accessed by users 'logging-on' to individual terminals. Putting the same software on (maybe) dozens of computers would be much more expensive.

What is a private MAC address?

A MAC address is unique to your ethernet card. MAC addresses are used within an Ethernet network to uniquely identify the source and destination of Ethernet frames. ARP (Address Resolution Protocol) is used on IP networks to map IP addresses to MAC addresses within an Ethernet network.

Difference between browser and web server?

A server is a computer that is used for networking. Some uses are filesharing, printer sharing, creating a domain, and internet restrictions.

A browser is software that enables you to communicate with the Internet. Examples are Internet Explorer, Firefox, etc.

What is datagram packet?

Clients and servers that communicate via a perfect channel have a dedicated point-to-point channel between themselves (or at least the illusion of one). To communicate, they must first establish the connection, transmit the data, and then close down the connection. All data sent over the channel is received in the same order that it was sent. This is guaranteed by the channel. In contrast, clients and servers that communicate via datagrams send and receive completely independent packets. These clients and servers do not have a dedicated point-to-point channel. Rather the packets are sent on their way over the network on whatever route is available.

A packet sent over a perfect channel does not contain any information about its source or its destination. The channel contains that information. In contrast, a datagram packet must contain the complete address of its source or destination (depending on if the datagram is sent or received).

Definition: A datagram is an independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed.

The java.net package contains two classes to help you write Java programs that use the datagram model to send and receive packets over the network: DatagramSocket and DatagramPacket. A DatagramSocket is a communcation link used to send datagrams between applications. A DatagramPacket is a message sent between applications via a DatagramSocket.

List 3 ways to prove network functionality?

Command line utilities, (PING, IPCONFIG, TRACE)

Microsoft Network Connections Utility

What is the broadcast address of network 192.168.113.216.255.255.255.248?

10.56.176.0 is your network. 255.255.240.0 is your subnet mask. Valid broadcast addresses would be 10.56.176.255 (network broadcast) and 255.255.255.255 (general network broadcast). The general network broadcast would actually broadcast to every machine on the internet, but internet routers will block all traffic from it to prevent this. In effect if you use either 10.56.176.255 or 255.255.255.255, the result is broadcasting to all machines on your network.

What is the main difference bitween switch and router?

The router is the brains of the network, it hands out the IP address's to all the devices and controls where the different information needs to go.

All the switch does is route the calls to the right devices.

If you talking about an Ethernet Switch then all it is is a smart hub. It's like a switch board operator on your phone, if computer 1 want's to talk to computer 3 then it routes the call through just to #3 and no one else. It does this automatically. Most routers already have a 4 port ethernet switch built in, if you need more ports then you can buy a 4, 8,16, etc, port stand alone one of your choice.

How do you use a router to connect 2 networks together?

We know that a router is a layer 3 device means Network Layer.

Router is a only device that can forward only uni cast massage.

If u configure the router well and connect the two separate network, i think the network will go finely.