MODULE-5-DATA COMMUNICATION AND NETWORKING

In the modulation process, a high-frequency periodic waveform is called the ___.

• A. Modulating signal.
• B. Carrier signal.
• C. Information signal.
• D. Data signal.

In ___ signaling, one logic state is represented by a positive voltage level, and the other by a negative voltage level.

• A. NRZ
• B. HDB3
• C. Polar
• D. Manchester

___ defines Media Access Control (MAC) and Physical (PHY) layers specifications for wireless LANs

• A. IEEE 802.6.
• B. IEEE 802.41
• C. IEEE 802.22
• D. IEEE 802.11

___and ___ forms of angle modulation.

• A. Amplitude Modulation, Phase Modulation
• B. Frequency Modulation, Phase Modulation
• C. Amplitude Modulation, Frequency Modulation
• D. Frequency Modulation, Pulse Code Modulation

Which of the following statements are correct?

• A. i and ii
• B. ii and iv
• C. ii and iii
• D. i, ii and iv

Match the following

• A. a-iii, b-i, c-iv, d-ii
• B. a-ii, b-i, c-iv, d-iii
• C. a-iii, b-i, c-ii ,d-iv
• D. a-i, b-iii, c-iv, d-ii

State whether the following statements are True (T) or False (F)

• a-T, b-F, c-T, d-F

• a-F, b-F, c-T, d-F

• a-F, b-T, c-F, d-T

• a-T, b-T, c-F, d-F

DHCP stands for

• A. Dynamic Host Configuration Protocol
• B. Digital Host Communication Provider
• C. Digital Host Communication Protocol
• D. Dynamic Host Configuration Provider

___________ cable consists of an inner copper core and a second conducting outer sheath.

• A. Twisted pair
• B. Fiber-optic
• C. Radio
• D. Shielded twisted pair.

In _____ coding, we divide our message into blocks, each of k bits, called ___.

• A. block; blockwords
• B. linear; datawords
• C. block; datawords
• D. none of the above