The value of 3⁵¹ mod 5 is

The DNS database contains:

An endpoint of an inter-process communication flow across a computer network is called ________

In which type of network is the communication channel shared by all the machines?

In networking, which of the following addresses is permanent and cannot be changed?

What is the abbreviation for Address Resolution Protocol?

As a system administrator of a company, you need to find the MAC address of each Windows machine. Which command would you use to identify the MAC address?

In an RSA cryptosystem, the value of the public modulus parameter n is 3007. If it is also is known that φ(n) = 2880, where φ(n) denotes Euler’s Totient Function, then the prime factors of n which is greater than 50 is

Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv according to UNIX socket API.

Consider a simple communication system where multiple nodes are connected by a shared broadcast medium (like Ethernet or wireless). The nodes in the system use the following carrier-sense multiple access (CSMA) protocol:

A node that receives a packet to transmit will carrier-sense the medium for 5 time units. If the node does not detect any other transmission in this duration, it starts transmitting its packet in the next time unit. If the node detects another transmission, it waits until this other transmission finishes, and then begins to carrier-sense for 5 time units again. Once they start to transmit, nodes do not perform any collision detection and continue transmission even if a collision occurs.

All transmissions last for 20 time units. Assume that the transmission signal travels at a speed of 10 meters per time unit in the medium. Assume that the system has two nodes, P and Q, located at a distance d meters from each other. P starts transmitting a packet at time t = 0 after successfully completing its carrier-sense phase. Node Q has a packet to transmit at time t = 0 and begins to carrier-sense the medium.

The maximum distance d (in meters, rounded to the closest integer) that allows Q to successfully avoid a collision between its proposed transmission and P's ongoing transmission is _____.