computer natwork

In Go-Back-N ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the receive window must be _____ Select one:

a. 31

b. 15

c. 32

d. 1

first address of the following 12.2.35.33/10 is:

a.12.0.0.0

b.12.2.30.0

c.255.255.255.0

d.12.2.0.0

Routers are

Select one:

a.none of the above

b.seventh-layer devices

c.thrird-layer devices

d.two-layered devic

The physical address:

Select one:

a.unique worldwide

b.used by routers

c.assigned to hosts by network ad administrators

d.none of the above

Microwaves are _________

Select one:

a.unidirectional

b.omnidirectional

c.line of sight

d.bidirectional

If a system that operates at 1000 baud has 16 signal levels, how many bits the system can transfer per second?

Select one:

a.125 bps

b.2000 bps

c.4000 bps

d.8000 bps