Computer Networks Answers

Illustrate the complete procedure to map a domain name to an IP address through an example

What is a socket descriptor? Draw its structure and explain its components

Discuss the essential properties of the following types of operating systems:

a. Batch;

b. Interactive;

c. Time sharing;

d. Real time;

e. Distributed.

Consider a system with 13 dedicated devices of the same type and all jobs currently

running on this system require a maximum of three devices to complete their

execution but they each run for long periods of time with just two devices and

request the remaining one only at the very end of the run. Assume that the job

stream is endless and that your operating system’s device allocation policy is a very

conservative one: No job will be started unless all the required drives have been

allocated to it for the entire duration of its run.

c. Under what circumstances an additional job would be started?

Consider a system with 13 dedicated devices of the same type and all jobs currently running on this system require a maximum of three devices to complete their execution but they each run for long periods of time with just two devices and request the remaining one only at the very end of the run. Assume that the job stream is endless and that your operating system’s device allocation policy is a very conservative one: No job will be started unless all the required drives have been allocated to it for the entire duration of its run. b. Explain what are the minimum and maximum numbers of devices that may be idle as a result of this policy. 

Consider a system with 13 dedicated devices of the same type and all jobs currently running on this system require a maximum of three devices to complete their execution but they each run for long periods of time with just two devices and request the remaining one only at the very end of the run. Assume that the job stream is endless and that your operating system’s device allocation policy is a very conservative one: No job will be started unless all the required drives have been allocated to it for the entire duration of its run. Explain what are the minimum and maximum numbers of devices that may be idle as a result of this policy.