What is the maximum possible window size for a sliding window protocol that uses a 4 bit sequence number?

What is the maximum possible window size for a sliding window protocol that uses a 4 bit sequence number?

15
3 Answers. 15 is the maximum windows size for 4 bit sequences and it will happen in Go back N.

What is sequence number in sliding window protocol?

The sequence numbers are numbered as modulo-n. For example, if the sending window size is 4, then the sequence numbers will be 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, and so on. The number of bits in the sequence number is 2 to generate the binary sequence 00, 01, 10, 11.

What is the maximum size of the window in a sliding window protocol?

Maximum window size = 1 + 2*a where a = Tp/Tt Minimum sequence numbers required = 1 + 2*a. All the packets in the current window will be given a sequence number.

How many bits do you need for the sequence number?

We know, Number of bits in sequence number field = 32 bits. So, Maximum number of sequence numbers possible = 232. 232 bytes of data can be labeled uniquely with these sequence numbers.

Which technique is used in sliding window?

Applying sliding window technique : We compute the sum of first k elements out of n terms using a linear loop and store the sum in variable window_sum. Then we will graze linearly over the array till it reaches the end and simultaneously keep track of maximum sum.

How do you calculate maximum window size?

The window scale value can be set from 0 (no shift) to 14. To calculate the true window size, multiply the window size by 2^S where S is the scale value. For Example: If the window size is 65,535 bytes with a window scale factor of 3.

What is 3 bit sliding window protocol?

Explanation. In the 3-bit sliding window, three frames are sent by the sender at a time before receiving an acknowledgment. Sliding window refers to the imaginary boxes that hold the frames on both sender and receiver side.

What are sequence numbers used for?

The sequence number is the byte number of the first byte of data in the TCP packet sent (also called a TCP segment). The acknowledgement number is the sequence number of the next byte the receiver expects to receive.

Why are sequence numbers random?

The Initial Sequence Number (ISN) used in TCP/IP sessions should be as random as possible in order to prevent attacks such as IP address spoofing and session hijacking.

When should you use sliding window?

2. Theoretical Idea. The condition to use the sliding window technique is that the problem asks to find the maximum (or minimum) value for a function that calculates the answer repeatedly for a set of ranges from the array.

What is sliding window analysis?

Sliding window analysis is an application in which test statistics are plotted with a sliding window at a certain length along a sequence or chromosome1; this type of analysis is ubiquitously employed to study the properties of chromosome sequences.

How do I calculate TCP window size?

On Linux systems, you can check that full TCP window scaling is enabled by looking at the value in /proc/sys/net/ipv4/tcp_window_scaling. On Cisco devices, you can adjust the the window size using the global configuration command, “ip tcp window-size”.

How to choose sequence numbers for sending window size 2𝑛 -1?

Thus in order to accommodate a sending window size of 2 𝑛 −1, a n-bit sequence number is chosen. The sequence numbers are numbered as modulo-n. For example, if the sending window size is 4, then the sequence numbers will be 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, and so on.

What is the number of bits in the sequence number?

For example, if the sending window size is 4, then the sequence numbers will be 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, and so on. The number of bits in the sequence number is 2 to generate the binary sequence 00, 01, 10, 11.

What is the maximum and minimum window size of a packet?

Maximum window size = 1 + 2*a where a = Tp/Tt Minimum sequence numbers required = 1 + 2*a. All the packets in the current window will be given a sequence number. Number of bits required to represent the sender window = ceil (log2 (1+2*a)).

What is sliding window protocol?

Sliding Window protocol handles this efficiency issue by sending more than one packet at a time with a larger sequence numbers. The idea is same as pipelining in architectures.