1
GATE CSE 2022
Numerical
+1
-0.33

Consider the resolution of the domain name www.gate.org.in by a DNS resolver. Assume that no resource records are cached anywhere across the DNS servers and that iterative query mechanism is used in the resolution. The number of DNS query-response pairs involved in completely resolving the domain name is __________.

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2
GATE CSE 2016 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In an Ethernet local area network, which one of the following statements is TRUE?
A
A station stops to sense the channel once it starts transmitting a frame.
B
The purpose of the jamming signal is to pad the frames that are smaller than the minimum frame size.
C
A station continues to transmit the packet even after the collision is detected.
D
The exponential backoff mechanism reduces the probability of collision on retransmissions.
3
GATE CSE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Consider a CSMA/CD network that transmits data at a rate of 100 Mbps (108 bits second) over a 1 km(kilometer) cable with no repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km/sec) in the cable?
A
8000
B
10000
C
16000
D
20000
4
GATE CSE 2014 Set 2
Numerical
+1
-0
In the diagram shown below, L1 is an Ethernet LAN and L2 is a Token-Ring LAN. An IP packet originates from sender S and traverses to R, as shown. The links within each ISP and across the two ISPs, are all point-to-point’ optical links. The initial value of the TTL field is 32. The maximum possible value of the TTL field when R receives the datagram is ____________. GATE CSE 2014 Set 2 Computer Networks - Lan Technologies and Wi-Fi Question 16 English
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