1)the number of hosts in the following prefix is: 120.15.7.4/26.

a.

256

b.

all other answers are wrong

c.

16777216

d.

64

2)

One of the techniques that can help avoid synchronization errors:

Select one:

a.

Aggregation

b.

Synchronization

c.

Line Coding

d.

Attenuation

3)

What is the first address of a block of classless addresses if one of the addresses is 17.12.14.50/28?

a.

17.12.14.48/28

b.

17.12.14.62/28

c.

17.12.14.63/28

d.

17.12.14.49/28