Choose the right answer: 1- A line encoding method wherein the positive half interval pulse is followed by a negative half interval pulse for transmission of ‘1’ is a. Bipolar NRZ b. NRZ-M c....

Choose the right answer:

1-A line encoding method wherein the positive half interval pulse is followed by a negative half interval pulse for transmission of ‘1’ is

a.
Bipolar NRZ

b.
NRZ-M

c.
bi-phase-level

d.
RZ-AMI

2-In block coding, the number of valid codewords is equal to

a.
2^n + 2^k

b.
2^n

c.
2^k

d.
2^n - 2^k

3-Which statement is correct for a simple parity-check code?

a.
can detect an odd-number of errors.

b.
can detect two errors.

c.
can detect no errors

d.
can detect an even-number of errors.

4-In modulo-2 arithmetic, adding 1 and 1 will have an outcome of

a.
0

b.
2

c.
1

d.
11

5-The remainder in cyclic redundancy checking represents the

a.
The CRC

b.
The error

c.
The divisor

d.
The syndrome