1. The most common communications devices all use __________ transmission, a continuous electrical signal in the form of a wave.
(1) analog
(2) digital
(3) automatic
(4) all
(5) None of these
2. __________ cards and internal modems have given portable computers full connectivity capability outside the constraints of an office.
(1) Graphics
(2) PC
(3) Router
(4) Video
(5) Micro-SD
3. A (n) __________ adapter can move data at 128,000 bps, more than double a standard modem.
(1) fax
(2) Dial-Up
(3) Telephone modem
(4) ISDN
(5) None of these
4. The __________ modem uses the coaxial television cables that are already in place without interrupting normal cable TV reception.
(1) cellular
(2) computer
(3) Telephone
(4) Fax
(5) cable
5. A popular communications medium is __________ transmission, which uses line-of-sight transmission of data signals through the atmosphere.
(1) fiber optics
(2) microwave
(3) Twisted pair cable
(4) Unshielded Twisted pair cable
(5) Co-axial
6. A __________ is a set of rules for the exchange of data between a terminal and a computer or between two computers.
(1) protocol
(2) standard
(3) Program
(4) Network
(5) None of these
7. A __________ network has a central (hub) computer that is responsible for managing the network
(1) ring
(2) star
(3) tree
(4) bus
(5) mesh
8. A __________ card connects each computer to the wiring in the network.
(1) PC interface
(2) network interface
(3) Wire interface
(4) All
(5) None of these
9. Wi-Fi uses the IEEE ________wireless networking standard.
(1) 802.11
(2) 803
(3) 802.7
(4) 802.6
(5) 803.11
10. A combinational logic circuit which sends data coming from a single source to two or more separate destinations is _______.
(1) Decoder
(2) Encoder
(3) Multiplexer
(4) Simplex
(5) Demultiplexer
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