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Recent questions in Computer Networks

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asked Feb 7 in Computer Networks by Arjun Veteran (364k points) 132 views

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asked Feb 7 in Computer Networks by Arjun Veteran (364k points) 1 view

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asked Feb 7 in Computer Networks by Arjun Veteran (364k points) 0 views

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asked Feb 7 in Computer Networks by Arjun Veteran (364k points) 0 views

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asked Feb 7 in Computer Networks by Arjun Veteran (364k points) 0 views

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GATEBOOK-2019 Grand Test CN-1
Which of the following is not part of the Ethernet frame? Preamble CRC Source address Type or Length

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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18

GATEBOOK-2019 Grand Test CN-2
Which of the following algorithm always guarantees that the transmitted packet is forwarded using minimum number of hops? Link state routing Distance vector routing Flooding Load shedding

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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19

GATEBOOK-2019 Grand Test CN-3
Suppose a user turns on a computer, starts a browser, types $\text{http://www.thegatebook.in}$ and hits ENTER. Which of the following protocols would probably not be used at any point to serve this request? HTTP TCP UDP SMTP

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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20

GATEBOOK-2019 Grand Test CN-4
Which of the following statements is TRUE about network devices? Ethernet switches will always send received frames out all interfaces (except the one on which the packet was received). Both IP routers and Ethernet hubs drop packets when there is congestion ... it receives, it will flood the packet out all interfaces (except the one on which the packet was received).

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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21

GATEBOOK-2019 Grand Test CN-5
Which of the following field of the IP header may not be used by destination's IP layer while doing the defragmentation? Offset Identification More Fragment bit Do not fragment

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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22

GATEBOOK-2019 Grand Test CN-6
Which of the following statements about datagrams sent by a node in a network using $IPv4$ protocol is (are) TRUE? I. Datagrams at the source must be the size of the smallest maximum transmission unit (MTU) of all the links on a path to ... may be fragmented during routing. III. Datagrams are reassembled only at the destination. II only III only I and III II and III

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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23

GATEBOOK-2019 Grand Test CN-7
Which utility would we use to test all $7$ OSI layers? Ping Trace route Telnet Show ARP

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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24

GATEBOOK-2019 Grand Test CN-8
Raju sends Rani a TCP packet containing a $\text{2 byte}$ payload with sequence number $100$. If Rani receives it, with which acknowledgement number does she reply? $99$ $100$ $101$ $102$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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25

GATEBOOK-2019 Grand Test CN-9
Which of the following is a stateless protocol ? I. IP II. HTTP III. TCP IV. BGP Only I Only I and II Only II and IV Only III and IV

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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26

GATEBOOK-2019 Grand Test CN-10
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. How many frames reach the client too late for playout? $7$ $3$ $6$ $5$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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27

GATEBOOK-2019 Grand Test CN-11
Consider two links, $(A,B)$ and $(B,C)$, with propagation delays of $d1$ and $d2$, respectively. Assume that $\text{host A}$ sends $\text{M packets}$ to $\text{host C}$ using a sliding window flow control protocol with a window of size $W$. What is the minimum time ... $(d1+d2) MW$ $2(d1+d2)\left \lceil \left ( \dfrac{W}{M} \right ) \right \rceil$ $2(d1+d2)W$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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28

GATEBOOK-2019 Grand Test CN-12
Consider a link $(A,B)$ with bandwidth $\text{1 Kbps}$ and propagation delay $\text{300 msec}$ and stop and wait protocol is used from $A$ to $B$ and Acknowledgements are piggybacked. Frame size is same for $A$ and $B$ and it is $\text{100 bits}$. ... to send to $A$. The Throughput for $A$ in this model is ___________ $ \text{Kbits/sec}$? $200$ $250$ $333$ $125$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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29

GATEBOOK-2019 Grand Test CN-13
TCP is sending data at $\text{1 megabyte per second}$. If the sequence number starts with $92000$, how long does it take before the sequence number goes back to zero? $7295.12$ $6295.87$ $7592.86$ $4294.87$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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30

GATEBOOK-2019 Grand Test CN-14
A computer on a $6-Mbps$ network is regulated by a token bucket. The token bucket is filled at a rate of $\text{1 Mbps}$. It is initially filled to capacity with $\text{8 megabits}$. If the system is initially idle for $\text{2 sec}$ then how long can the computer ... full $\text{6 Mbps}$ speed? $\text{1.6 sec}$ $\text{2.6 sec}$ $\text{3.6 sec}$ $\text{4 sec}$

asked Jan 7 in Computer Networks by GATEBOOK Loyal (7.7k points) 1 view

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