1
GATE CSE 2016 Set 1
Numerical
+2
-0
For a host machine that uses the token bucket algorithm for congestion control, the token bucket has a capacity of 1 megabyte and the maximum output rate is 20 megabytes per second. Tokens arrive at a rate to sustain output at a rate of 10 megabytes per second. The token bucket is currently full and the machine needs to send 12 megabytes of data. The minimum time required to transmit the data is __________ seconds.
2
GATE CSE 2016 Set 1
+1
-0.3
Which one of the following protocols is NOT used to resolve one form of address to another one?
A
DNS
B
ARP
C
DHCP
D
RARP
3
GATE CSE 2016 Set 1
+1
-0.3
Which of the following is/are example(s) of stateful application layer protocols?

(i) HTTP
(ii) FTP
(iii) TCP
(iv) POP3

A
(i) and (ii) only
B
(ii) and (iii) only
C
(ii) and (iv) only
D
(iv) only
4
GATE CSE 2016 Set 1
+2
-0.6
Consider that B wants to send a message m that is digitally signed to A. Let the pair of private and public keys for A and B be denoted by $$K_x^ -$$ and $$K_x^ +$$ for x = A, B, respectively. Let Kx(m) represent the operation of encrypting m with a key Kx and H(m) represent the message digest. Which one of the following indicates the CORRECT way of sending the message m along with the digital signature to A?
A
$$\left\{ {m,K_B^ + \left( {H\left( m \right)} \right)} \right\}$$
B
$$\left\{ {m,K_B^ - \left( {H\left( m \right)} \right)} \right\}$$
C
$$\left\{ {m,K_A^ - \left( {H\left( m \right)} \right)} \right\}$$
D
$$\left\{ {m,K_A^ + (m)} \right\}$$
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