gatebook

Question

Suppose a server transmits one frame of a video every second, and the client starts playing the video at one frame per second as soon as the first frame arrives. Suppose the first ten frames arrive at times 0, 1.2, 1.99, 4.17, 4.01, 5.03, 8.05, 7.50, 8.90, 8.99, all in seconds. Which frames reach the client too late for playout?

(A) 7

(B) 3

(C) 6

(D) 5

Answer 1

since we start playing the first frame at t=0. Subsequent frames should be available at 1, 2, 3, 4,...........

Time at which frame should be played	Frame number	Time of arrival	Is frame late?	How much late?
0	0	0	no	-
1	1	1.2	yes	0.2
2	2	1.99	no	-
3	3	4.17	yes	1.17
4	4	4.01	yes	0.01
5	5	5.03	yes	0.03
6	6	8.05	yes	2.05
7	7	7.5	yes	0.5
8	8	8.9	yes	0.9
9	9	8.99	no	-

So From the above table we found that frame number 6 is more late than any other frame

So answer should be C)

Comments

why frame no is starting with 0.

it should start with 1 and ans should be 7.

Right?