Computer Networks QUIZ - 1

Which of the following transmission directions listed is not a legitimate channel?

• 1. Simplex

• 1. Half Duplex

• 1. Full Duplex

• 1. Double Duplex

"Parity bits" are used for which of the following purposes?

• 1. Encryption of data

• 1. To transmit faster

• 1. To detect errors

• 1. To identify the user

The location of a resource on the internet is given by its?

• 1. Protocol

• 1. URL

• 1. E-mail address

• 1. ICQ

What is the purpose of a "firewall" in computer networking?

• 1. To block all incoming and outgoing traffic

• 1. To prevent unauthorized access to or from a private network

• 1. To increase the speed of data transmission

• 1. To encrypt all data packets

What is the function of a "router" in a network?

• 1. To connect multiple devices within a single network

• 1. To convert digital signals to analog signals for transmission

• 1. To filter and forward data packets between different networks

• 1. To provide secure access to a network through authentication

The term FTP stands for?

• 1. File transfer program

• 1. File transmission protocol

• 1. File transfer protocol

• 1. File transfer protection

Which one of the following is not a network topology?

• 1. Star

• 1. Ring

• 1. Bus

• 1. Peer to Peer

Consider the following:

1. Twisted pair cables

2. Microwaves and Satellite Signals

3. Repeaters

4. Analog Transmissions

5. Fiber optics

Which of the above is consider as (a) signal transmission medium is data communications?

1. 
   

• 1. (1) and (5)

• 1. (1) and (2)

• 1. (1) (2) and (5)

• 1. (1) (2) (3) and (5)

Which of the following layers does the HTTP protocol work on?

• 1. Physical layer

• 1. Data-link layer

• 1. Application layer

• None of the above

What is the number of layers in the OSI model?

• 8

• 4

• 7

• 9