Chapter 8 - Networking and Telecommunication

What is an important difference between Internet newsgroups and mailing lists?

A mailing list msg goes to only a specific group of people and a newsgroup msg is avail for anyone to see.

The number of email messages delivered each day far exceeds the number of letters delivered by the U.S. Postal Service. Why?

All of the above (send faster/deliver rapidly/group communication/save $).

Local area network (LAN)

Computers are physically close.

Today's email system is built on protocols that?

Don't ensure that each sender has a verifiable identity.

3G and 4G networks were developed by the computer industry as part of the fiber-optic Internet backbone. T/F?

False.

By definition, a computer network must be connected to the Internet. T/F?

False.

Most wireless computer networks today use infrared signals to transmit data. T/F?

False.

If you want to share a document with other people whose computers are connected to your LAN, you should upload the document to a?

File server.

What is a service that connects computers and peripherals in the same building called?

Local area network (LAN)

Which of these is a generally accepted rule of netiquette?

Lurking in a hang-glider enthusiast newsgroup without posting any messages.

MMORPG

Massively multi-player online role-playing games.

Geostationary communication satellites

Match earth's rotation/stay in stationary position.

What percentage of email messages is junk email (spam)?

More than 50 percent.

WiMAX (802.16)

Newer, long-distance radio-wave technology/powerful tool for connecting Wi-Fi networks.

hub (switch)

Nodes are connected to these. Allows any node on network to communicate w/any other node.

cloud computing

Resources seem to be coming from "the cloud"/somewhere on the internet rather than from a particular computer.

wiki

Shortened from Hawaiian term (wiki wiki), which means quick; web site designed to enable anyone who accesses it to contribute to it and modify content.

Intranet

System built around open standards & protocols of internet.

Telecommunication

Technology of long-distance communication.

What is the main diff btwn instant messaging and email?

The asynchronous nature of email communication.

TCP/ICP

The most famous protocol for computer networking/Internet control exchange of data.

Which of the following does not affect bandwidth?

The type of information being transmitted.

What is the most common reason for installing a Wi-Fi hub in a home?

To allow PCs to connect to a network without wires.

A single fiber-optic cable has the bandwidth of thousands of copper telephone cables. T/F?

True.

Bc peer-to-peer networking software is built into the Windows and Macintosh operating system, a modern desktop computer can act as both client and server on a network. T/F?

True.

Depending on your email client program and your preferences, your mail might be stores on a remote host of downloaded and stored on your local machine. T/F?

True.

Email and instant messaging can filter out many human components of communication, increasing the chance of misinterpreted messages. T/F?

True.

Simple technological solutions can reduce, but not eliminate, the spam problem for email users. T/F?

True.

The line that separates computer communication and telephone communication is being blurred by devices and technologies that operate in both realms. T/F?

True.

The most common types of networks today use a standard networking architecture known as Ethernet. T/F?

True.

Many experts say we're at the beginning of a revolution that is creating a vast grassroots network of public and private wireless hubs based on?

Wi-Fi technology.

Wireless network (802.11)

Wireless LAN working group

Computer networks

a. allow people to share hardware resources b. make it easier for people to share data c. support collaboration d. all of the above e. none of the above. ANSWER: D

A modem...

converts a digital signal into an analog signal and vice versa.

node

each computer and networked peripheral on a LAN.

A 4G network...

is based on fourth-generation wireless phone network technology.

grid computing

like P2P (a form of distributed computing) - sharing processing power.

Wide-area network (WAN)

network of LANs extends over long distance.

Global positioning system (GPS)

specialized network/DOD/24 satellites that circle the earth.

The most common type of LAN cable

twisted pair/copper wires