## Network and the Internet

### MC Quiz

1. E-mail (electronic mail) ______.

   1. can contain handwritten or typed text, illustrations, photographs, or other graphics
   2. is a real-time Internet communications service that notifies users when one or more people are online and then allows the exchange of massages
   3. enables users to talk to other people over the Internet
   4. is an area of the Web where users conduct written discussions about a particlar subjects

2. ______ is a LAN technology that allows personal computers to contend for access to the network.

   1. Ethernet
   2. TCP/IP
   3. Token ring
   4. WAP

3. Wireless transmission media used in communications include all of the following except ______.

   1. communications satellites
   2. microwaves and infrared
   3. broadcast radio and cellular radio
   4. twisted-pair cable and fiber - optical cable

4. In a ______, a cable forms a closed loop, with all computers and devices arranged along the loop.

   1. star network
   2. ring network
   3. bus network
   4. tree network

5. A(n) ______ consists of a continuous electrical wave.

   1. turn signal
   2. analog signal
   3. radio signal
   4. digital signal

6. When compare to cables that use wire, such as twisted-pair abd coaxial cables, all of the following are advantages of fiber-optic cables except ______.

   1. faster data transmission
   2. better security for signals during transmission
   3. less cost and easier installation and modification
   4. less susceptibility to noise (interference) from other devices

7. For successful communications, a ______ is needed that accepts the transmitted data, instructions, or information.

   1. receiving device
   2. communication device
   3. communication channel
   4. sending device

8. Physical transmission media used in communications include all of the following except ______.

   1. coaxial cable
   2. twisted-pair cable
   3. fiber - optic cable
   4. microwave cable

9. A ______ is a network that connects computers and devices in a limited geographic area, such as a home, school computer laboratory, office building, or closely positioned group of building.

   1. central area network (CAN)
   2. metropolitan area network (MAN)
   3. local area network (LAN)
   4. wide area network (WAN)

10. ______ allows wireless mobile devices to access the Internet and its services such as the Web and e-mail.

    1. Ethernet
    2. TCP/IP
    3. Token ring
    4. WAP

11. Advantages of using network include ______ .

    1. sharing hardware and software
    2. sharing data and information
    3. all of the above
    4. facilitating communications

12. A chat room ______.

    1. enables users to talk to other people over the Internet
    2. can contain handwritten or typed text, illustrations, photographs, or other graphics
    3. is an area of the Web where users conduct written discussions about a particlar subjects
    4. is a real-time Internet communications service that notifies users when one or more people are online and then allows the exchange of massages

13. Instant massaging (IM) ______.

    1. is an area of the Web where users conduct written discussions about a particlar subjects
    2. can contain handwritten or typed text, illustrations, photographs, or other graphics
    3. is a real-time Internet communications service that notifies users when one or more people are online and then allows the exchange of massages
    4. enables users to talk to other people over the Internet

14. A ______ is a network that covers a large area geographic area (such as a city, country, or the world) using a communication channel that combines many types of media.

    1. local area network (LAN)
    2. wide area network (WAN)
    3. central area network (CAN)
    4. metropolitan area network (MAN)

15. According to the definition of a modem (to convert from analog signals to digital signals and vice versa), the use of the term modem in the context of ______ is not correct.

    1. external modem
    2. digital modem
    3. internal modem
    4. dial-up modem

16. A ______ is a backbone network that connects networks in a city or town and handles the bulk of communications activities, or traffic, in that region.

    1. metropolitan area network (MAN)
    2. central area network (CAN)
    3. wide area network (WAN)
    4. local area network (LAN)

17. For successful communications, a ______ is needed that initiates an instruction to transmit data, instructions, or information.

    1. sending devices
    2. communication channel
    3. communication device
    4. receiving devices

18. A(n) ______ consists of individual electrical pulses that represent bits grouped together into bytes.

    1. radio signal
    2. turn signal
    3. digital signal
    4. analog signal

19. A ______ is the devices that provides a central point for cables in a network.

    1. bus
    2. modem
    3. hub
    4. packet

20. With broadcast radio, some networks use a ______, which both sends and receives signals from wireless devices.

    1. router
    2. transceiver
    3. coax
    4. firewall

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