Networking Section 1 - Technical Questions and Answers

Networking - Section 1
Networking - Section 2

41.	What are the categories of Transmission media?
	Answer: a. Guided Media i. Twisted - Pair cable 1. Shielded TP 2. Unshielded TP ii. Coaxial Cable iii. Fiber-optic cable b. Unguided Media i. Terrestrial microwave ii. Satellite Communication Workspace Report errors ... Name : Email: View Answer

42.	What are the types of errors?
	Answer: a. Single-Bit error In a single-bit error, only one bit in the data unit has changed b. Burst Error A Burst error means that two or more bits in the data have changed. Workspace Report errors ... Name : Email: View Answer

43.

What is Error Detection? What are its methods?

44.	What is Redundancy?
	Answer: The concept of including extra information in the transmission solely for the purpose of comparison. This technique is called redundancy. Workspace Report errors ... Name : Email: View Answer

45.	What is VRC?
	Answer: It is the most common and least expensive mechanism for Error Detection. In VRC, a parity bit is added to every data unit so that the total number of 1s becomes even for even parity. It can detect all single-bit errors. It can detect burst errors only if the total number of errors in each data unit is odd. Workspace Report errors ... Name : Email: View Answer

46.

What is LRC?

47.	What is CRC?
	Answer: CRC, is the most powerful of the redundancy checking techniques, is based on binary division. Workspace Report errors ... Name : Email: View Answer

48.	What is Checksum?
	Answer: Checksum is used by the higher layer protocols (TCP/IP) for error detection Workspace Report errors ... Name : Email: View Answer

49.	List the steps involved in creating the checksum.
	Answer: a. Divide the data into sections b. Add the sections together using 1's complement arithmetic c. Take the complement of the final sum, this is the checksum. Workspace Report errors ... Name : Email: View Answer

50.	What are the Data link protocols?
	Answer: Data link protocols are sets of specifications used to implement the data link layer. The categories of Data Link protocols are 1. Asynchronous Protocols 2. Synchronous Protocols a. Character Oriented Protocols b. Bit Oriented protocols Workspace Report errors ... Name : Email: View Answer