Answers:
1. Sending device — initiates instruction to transmit data, instructions, or information
Communications device — connects the sending device to the communications channel
Communications channel — media on which data, instructions, or information travel
Communications device — connects the communications channel to the receiving device
Receiving device — accepts transmission of data, instructions, or information
Communications channel — media on which data, instructions, or information travel
Communications device — connects the communications channel to the receiving device
Receiving device — accepts transmission of data, instructions, or information
2.
Text messaging allows users to send and receive short text messages
Picture messaging allows users to send graphics, pictures, video clips, sound files, and short text messages
3. Today most computers are capable (through either a phone line or a cable connection) of exchanging information over the Internet. Your child can send a message from his or her computer to the computer of a neighbor or a friend on the other side of the planet. Students might use computers to communicate with their classmates about homework assignments, group projects, or other school-related activities. They may also use them to submit homework assignments and presentations to their teachers.
4.
A user can logon to a computer anywhere on the network and access their work files from the file server.
Computers can be managed centrally - with the same software installed on each one.
Time - it is much faster to install an application once on a network - and copy it across the network to every workstation.
Sharing printers, plotters, modems etc saves money and time.
Security - the Network Manager can allocate usernames and passwords to all users to try to prevent unauthorized access.
It is easy and convenient to monitor users - for example websites visited or documents printed - this can be done using software running on the server.
5. A server a computer program running to serve the needs or requests of other programs (referred to in this context as "clients") which may or may not be running on the same computer. Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the application.
6. A network standard defines guidelines that specify the way computers access the medium to which they are attached the speeds used on different types of networks, and the types of physical cable and/or wireless technology used.
Ethernet: network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted; that is, each node attempts to transmit data when it determines the network is available to receive communications. Also based on a bus topology but can be wired in a star pattern.
6. A network standard defines guidelines that specify the way computers access the medium to which they are attached the speeds used on different types of networks, and the types of physical cable and/or wireless technology used.
Ethernet: network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted; that is, each node attempts to transmit data when it determines the network is available to receive communications. Also based on a bus topology but can be wired in a star pattern.
7. Office Intercom lets you use your computer to speak to others over the
internet or your local office computer network. It works as a virtual
intercom and feels a little like using a CB radio. To talk to anyone else who
has installed Office Intercom anywhere in the world, just hold down a key
on the keyboard. Speak into your computer's microphone and you will be
heard through the other computer's speakers. You can assign system-wide
'hot' keys, or use hardwired buttons or a Speech Mike handset to connect
directly without opening Office Intercom.
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