221. The station-to-hub distance in which of the following is 2000 meters ?

100 Base-TX

100 Base-FX

100 Base - T4

100 Base - T1

222. Which of the following is not a transceiver function?

Transmission and receipt of data

Checking of line voltages

Addition and subtraction of headers

Collision detection

223. In Token Ring, when a frame reaches its destination station, then

message is copied

four bits in the packet are changed

message is taken of the ring and replaced by the token

both (a) and (b)

224. What can happen at a Token Ring station

Examination of the destination address

Regeneration of the frame

Passing of the frame to the next station

All of these

225. The monitor station in what standard ensures that one and only one token is circulating ?

802.3

802.5

Both (a) and (b)

All of these

226. What uses a physical star topology ?

10 base 5

10 base 2

10 base T

None of these

227. Frequency range at which the land coaxial cables are used, is

106 to 108 Hz

1010 to 1011 Hz

103 to 104 Hz

None of these

228. In a broad sense, a railway track is an example of

simplex

half-duplex

full-duplex

All of these

229. Bit stuffing refers to

inserting a '0' in user stream to differentiate it with a lag

inserting a '0' in lag stream to avoid ambiguity

appending a nibble to the lag sequence

appending a nibble to the use data stream

230. Unmodulated signal coming from a transmitter is known as

carrier signal

baseband signal

primary singal

None of these

231. Method of communication in which transmission takes place in both directions, but only in one direction at a time, is called

simplex

four wire circuit

full duplex

half duplex

232. Thick coax have maximum segment of

500 m

200 m

100 m

700 m

233. Twisted pair have maximum segment of

500 m

200 m

100 m

2000 m

234. Fibre optics have maximum segment

500 m

200 m

100 m

2000 m

235. Modem is used in data trasmission. When was it involved and in which country ?

1963, USA

1965, Germany

1950, USA

1950, Japan

236. Different computers are connected to a LAN by a cable and

modem

interface card

special wires

telephone lines

237. Working of the WAN generally involves

telephone lines

micro waves

satellites

All of these

238. The amount of uncertainty in a system of symbol is called

Bandwidth

Entropy

Loss

Quantum

239. Simple network management protocol (SNMP) is implemented with a daughter board in

the nodes

the server

the hubs

a separate PC that manages the network

240. In networking terminology UTP means

Unshielded Twisted pair

Ubiquitious Teflon port

Uniformly Terminating port

Unshielded T-connector port