Computer Networks Answers

Using the information above, draw a diagram to illustrate the file and folder structure, and permission strategy for the H:\ and W:\directories.

Question 1

FOUR QUESTIONS ANSWER ALL

 a) Discuss the key functions of an operating system, and how these functions make it possible for computer applications to effectively utilize computer system resources. AN, 7

b) Compare and contrast the Windows API and the POSIX API and briefly explain how these APIs can be applied in systems programming. EV, 8

2

  c) Write a C/C++ program to create a file in a specified folder of the Windows file system, and write some text to the file. Compile and run the program and copy the source code into your answer booklet.

Describe the steps involved in a distributed function using a simple carrier sense multiple access algorithm with interframe space delay to transmit frames in a wireless LAN

Describe a type scenario involving 2 computer Devices transferring a video file using an unsecured ftp connection where TCP three-way handshake is susceptible to vulnerability

 Describe four units that makes IEEE 802.11 Architecture