Computer Networks Answers

When you save the information the channel you use and the data server you have to consider it also determines the safety of your software.

Firewall vs content filter IDS (With Example)

Read the following scenario and suggest measures that could be taken to improve the security of the computer system.

A Computer Science student has a summer job in the data processing department of a large supermarket. 

One lunchtime he is left alone in the office which he shares with several other employees. He sits down at a colleague’s desk and finds that the PC is still logged on. He browses the menu and comes upon a menu to access the product database. 

The submenu asks if he would like to Add, Delete, Update or View products. He selects Update and changes the price of several items that he wishes to purchase. Then he leaves the office and goes and makes his purchases, before returning and restoring the database to its original state. How could his actions be discovered?

Indicate, in the correct order, the layers of TCP/IP protocol stack that are implemented on the following network components :

End system (host)

Router

Switch

For a business and enterprise users, network and data security is of utmost concern. To address this, there are a number of precautions that a WLAN user can adopt to prevent a network from hacker attacks, unauthorised access, and coparate espionage. Discuss various security measures /precautions that can be adopted in preventing these attacks.

Encryption to large extent can been adopted to restrict access to data/information only to intended receiver. With the use of well-labeled diagram, discuss various types of encryption and it's operations.

 Prompt the user to enter the four assessments (Class & Cycle tests) and set the object using the setValues method

Give a brief overview of the evolution of the Intel X86 architecture from its introduction in 1978 up to these day.

1. How is the transfer of frames in ethernet similar to the transfer of frames in a packet-switching network? How is it different?

2. what are functions of session layer and presentation layer in the HTTP protocol.

3. Can a connection-oriented, reliable message transfer service be provided across a connectionless packet network? Explain. 

4. Does Ethernet provide connection-oriented or connectionless service? Justify your answer.

Discuss the information that the operating system stores on processes in its Process Control Block.