Computer Networks CT-3

•  Radio broadcast on a common frequency to transmit uses _________ protocol. 

• • Collision-Free Protocols

• • Carrier Sense Multiple Access Protocols

• • Limited-Contention Protocols

• • ALOHA Protocol

We have categorized access methods into _______ groups.

• • two

• • three

• four

• five

In ___________ methods, no station is superior to another station and none is assigned the control over another.

• • controlled access

• • random access

• • channelization

• • none of the above

In ______, the chance of collision can be reduced if a station senses the medium before trying to use it.

• • MA

• • CSMA

• • FDMA

• • CDMA

In ________, a station monitors the medium after it sends a frame to see if the transmission was successful. If so, the station is finished. If, however, there is a collision, the frame is sent again.

• • CSMA/CD

• • CSMA/CA

• • either (a) or (b)

• • both (a) and (b)

In _______ methods, the stations consult one another to find which station has the right to send

• • controlled access

• • random access

• • channelization

• • none of the above

In the ________ method, a station needs to make a reservation before sending data. Time is divided into intervals.

• • reservation

• • polling

• • token passing

• • none of the above

In the _______ method, each station has a predecessor and a successor.

• • reservation

• • polling

• • token passing

• • none of the above

In the _________ method, a special packet called a ______ circulates through the ring.

• • polling: poll request

• • token passing: token

• • reservation: control frame

• • none of the above

In ________, the available bandwidth is divided into frequency bands.

• • FDMA

• TDMA

• CDMA

• none of the above