45.

46.

47.

48.

49.

50.

51.

52.

Dijktra’s algorithm finds :
(^) Minimum cost spanning tree
(B) 3101८51 path from one node to all other nodes
(C) Shortest path between all pair of nodes
(D) None of the above

In a noiseless channel with a bandwidth of 4000 Hz transmitting signal with 2 signal levels, what
is the theoretical maximum bitrate achieved ?

(A) 10000 bps (8) 6000 bps

(€) 8000 bps (D) 4000 bps

In the fibre optic cables, what makes the ray to undergo reflection ?
(A) Angle of Incidence < Critical Angle
(B) Angle of Incidence = Critical Angle
(C) Angle of Incidence > Critical Angle
(D) Angle of Incidence <= Critical Angle

The layer in which datagram switching is normally done ?
(A) Network Layer (B) Transport Layer
(C) Ethernet Layer (D) Physical Layer

The Hamming Distance D between the two code words (10101011 and 11010101) is
ക) 4 ®) 5
© 6 (D) 8

Bridge is a connecting device which operates in the following layers :
(^) Physical layer and Data Link layer
(8) Data link layer and Network layer
(C) Network layer and Physical layer
(D) Data link layer and Transport layer

The multiplexing technique used for digital signals is
(A) Frequency Division Multiplexing
‏رمق‎ Wave Division Multiplexing
(C) Carrier Division Multiple Access
(D) Time Division Multiplexing

Five channels each with 110 kHz bandwidth are to be multiplexed together. In order to prevent
interference there is a guard band of 20 kHz between the channels. The minimum bandwidth of
the link is atleast

(A) 640117 (छ) ட
(८) 630 तट (D) 550 kHz

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