Exams › GATE › Technical
In an Ethernet local area network, which one of the following statements is TRUE?
- A station stops to sense the channel once it starts transmitting a frame.
- The purpose of the jamming signal is to pad the frames that are smaller than the minimum frame size.
- A station continues to transmit the packet even after the collision is detected.
- The exponential backoff mechanism reduces the probability of collision on retransmissions.
Correct answer: The exponential backoff mechanism reduces the probability of collision on retransmissions.
Solution
The exponential backoff mechanism helps to minimize the chances of collisions during retransmissions by increasing the wait time exponentially after each successive collision, allowing more time for the network to clear before attempting to resend the data.
Related GATE Technical questions
- We want to design a synchronous counter that counts the sequence 0-1-0-2-0-3 and then repeats. The minimum number of J-K flip-flops required to implement this counter is
- A queue is implemented using an array such that ENQUEUE and DEQUEUE operations are performed efficiently. Which one of the following statements is CORRECT (n refers to the number of items in the queue)?
- Consider the following C program.
void f(int, short);
void main()
{
int i = 100;
short s = 12;
short *p = &s;
________; // call to f()
}
Which one of the following expressions, when placed in the blank above, will NOT result in a type checking error?
- The worst case running times of Insertion sort, Merge sort and Quick sort, respectively, are:
- Let G be a weighted connected undirected graph with distinct positive edge weights. If every edge weight is increased by the same value, then which of the following statements is/are TRUE?
P: Minimum spanning tree of G does not change
Q: Shortest path between any pair of vertices does not change
- Consider the following C program.
#include<stdio.h>
void mystery(int *ptra, int *ptrb) {
int *temp;
temp = ptrb;
ptrb = ptra;
ptra = temp;
}
int main() {
int a=2016, b=0, c=4, d=42;
mystery(&a, &b);
if (a < c)
mystery(&c, &a);
mystery(&a, &d);
printf("%d
", a);
}
The output of the program is _________.
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