Net 47

CBSE NET

Q. An analog signal has a bit rate of 6000 bps and a baud rate of 2000 baud. How many data elements are carried by each signal element ?

(A) 0.336 bits/baud

(B) 3 bits/baud

(C) 120,00,000 bits/baud

(D) None of the above

Ans: (B)

Explanation: A same signal has bit rate of 6000bp and baud rate of 2000 baud. So 6000 = 2000 baud.  Hence a signal carried 3bits of data.

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Net 43

CBSE NET JUNE 2012 PAPER II

Q. Page Shift Keying (PSK) Method is used to modulate digital signal at 9600 bps using 16 level. Find the line signals and speed (i.e. modulation rate).

(A) 2400 bauds

(B) 1200 bauds

(C) 4800 bauds

(D) 9600 bauds

Ans: (A)

Explanation: To calculate baud rate, modulation have to be divided by the bit rate. See the table below:

MODULATION	BAUD RATE	BIT RATE
4-PSK	N	2N
8-PSK	N	3N
16-PSK	N	4N

Here, modulation is 96000 bps which is at level 16, so 96000/4 = 2400 bauds.

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Net 10

CBSE NET JANUARY 2017 PAPER III

A packet whose destination is outside the local TCP/IP network segment is sent to ..............

(1) File server
(2) DNS server
(3) DHCP server
(4) Default gateway

Ans: 4

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Net 9

CBSE NET JAN 2017 PAPER III

In link state routing algorithm after construction of link state packets, new routes are computed using:

(1) DES algorithm
(2) Dijkstra's algorithm
(3) RSA algorithm
(4) Packets

Ans: 2

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