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451. In the _________ method, a special packet called a _________ circulates through the ring.
Correct answer: (C)
token passing: token
452. In the _________ method, a station needs to make a reservation before sending data. Time is divided into intervals.
Correct answer: (A)
token passing: token
453. In the _________ method, after the station finds the line idle it sends or refrain from sending based on the outcome of a random number generator. If the line is busy, it tries again.
Correct answer: (C)
p-persistent
454. In the _________ method, after the station finds the line idle, it sends its frame immediately. If the line is not idle, it continuously senses the line until it finds it idle.
Correct answer: (B)
1-persistent
455. In the _________ method, all data exchanges must be made through the primary device even when the ultimate destination is a secondary device.
Correct answer: (B)
polling
456. In the _________ method, each station has a predecessor and a successor.
Correct answer: (C)
token passing
457. In the _________ method, the primary device controls the link; the secondary devices follow its instructions.
Correct answer: (B)
polling
458. In the _________ method, the stations in a network are organized in a logical ring.
Correct answer: (C)
token passing
459. In the _________ method, time is divided into intervals. In each interval, a reservation frame precedes the data frames sent in that interval.
Correct answer: (A)
reservation
460. In the _________ protocol we avoid unnecessary transmission by sending only frames that are corrupted.
Correct answer: (C)
Selective-Repeat ARQ