1
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](https://imagex.cdn.examgoal.net/aFpocrxJyON5u4HnG/77P5Keq63BLJSqprj0rIkX7ouCQ5L/NoMvE0yzwQeHR5GZQzSTAa/uploadfile.jpg)
![GATE CSE 2014 Set 2 Computer Networks - Lan Technologies and Wi-Fi Question 16 English](https://imagex.cdn.examgoal.net/aFpocrxJyON5u4HnG/77P5Keq63BLJSqprj0rIkX7ouCQ5L/NoMvE0yzwQeHR5GZQzSTAa/uploadfile.jpg)
Your input ____
2
GATE CSE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
Consider the store and forward packet switched network given below. Assume that the bandwidth of each link is 106 bytes/sec. A user on host A sends a file of size 103 bytes to host B through routers R1 and R2 in three different ways. In the first case a single packet containing the complete file is transmitted from A to B. In the second case, the file is split into 10 equal parts, and these packets are transmitted from A to B. In the third case, the file is split into 20 equal parts and these packets are sent from A to B. Each packet contains 100 bytes of header information along with the user data. Consider only transmission time and ignore processing, queuing and propagation delays. Also assume that there are no errors during transmission. Let T1, T2 and T3 be the times taken to transmit the file in the first, second and third case respectively. Which one of the following is CORRECT?
![GATE CSE 2014 Set 2 Computer Networks - Data Link Layer and Switching Question 9 English](https://gateclass.static.cdn.examgoal.net/Dm98zgbhmcQ1WAPdf/3lpt4zucTHKGvEeSDUUrG4JnaZMeI/jCRxG5ON87rC6nphjX37i6/uploadfile.jpg)
![GATE CSE 2014 Set 2 Computer Networks - Data Link Layer and Switching Question 9 English](https://gateclass.static.cdn.examgoal.net/Dm98zgbhmcQ1WAPdf/3lpt4zucTHKGvEeSDUUrG4JnaZMeI/jCRxG5ON87rC6nphjX37i6/uploadfile.jpg)
3
GATE CSE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
An IP machine Q has a path to another IP machine H via three IP routers R1, R2, and R3.
Q—R1—R2—R3—H
H acts as an HTTP server, and Q connects to H via HTTP and downloads a file. Session layer encryption is used, with DES as the shared key encryption protocol. Consider the following four pieces of information:
$$[I1]$$ The URL of the file downloaded by Q
$$[I2]$$ The TCP port numbers at Q and H
$$[I3]$$ The IP addresses of Q and H
$$[I4]$$ The link layer addresses of Q and H
4
GATE CSE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is TRUE about the interior gateway routing protocols – Routing Information Protocol (RIP) and Open Shortest Path First (OSPF)?
Paper analysis
Total Questions
Algorithms
5
Compiler Design
2
Computer Networks
6
Computer Organization
5
Data Structures
3
Database Management System
5
Digital Logic
3
Discrete Mathematics
9
Operating Systems
4
Programming Languages
5
Software Engineering
1
Theory of Computation
5
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