Tutorial 7

These codes are used to detect and correct errors that may occur during data transmission.

• Binary Code

• Character Encoding

• Error Detection and Correction Codes

• Compression Code

Answer explanation

Error Detection and Correction Codes: These codes are used to detect and correct errors that may occur during data transmission. Examples include parity bits, checksums, and cyclic redundancy checks (CRC).

Compression Codes _____________.

• define rules for communication between devices

• map characters (letters, digits, punctuation marks, etc.) to binary code for transmission and storage

• used to detect and correct errors that may occur during data transmission

• encode data in a more efficient manner for transmission or storage, reducing the amount of data that needs to be transmitted

_________ are a type of error-detecting code that involves adding up the values in a set of data and appending the result to the data being transmitted.

• Checksum

• CRC

• Parity Bit

• Status code

Answer explanation

Checksums are a type of error-detecting code that involves adding up the values in a set of data and appending the result to the data being transmitted.

________ are used in serial communication to detect errors in individual characters. An extra bit, called a parity bit, is added to each character to make the total number of bits (including the parity bit) either odd or even.

• Checksum

• Parity Bit

• CRC

• Status Code

Answer explanation

Parity Bit are used in serial communication to detect errors in individual characters. An extra bit, called a parity bit, is added to each character to make the total number of bits (including the parity bit) either odd or even.

IP addresses are allocated by _______.

• CRC

• IANA

• Binary Bit

• Status Code

Answer explanation

IP addresses are allocated by Internet Assigned Numbers Authority (IANA) to Regional Internet Registries (RIRs), which in turn allocate blocks of addresses to Internet service providers (ISPs) and organizations.

For end user, it is the _________ that is responsible to assign IP address.

• ISP

• SMTP

• FTP

• RDP

Answer explanation

ISPs assign IP addresses to end-users, whether they are individuals or businesses, typically through dynamic or static addressing methods.

In IPv4 IP address is divided into two parts namely ________ and _________ portion.

• IANA, host

• host, RIR

• network, IANA

• network , host

Answer explanation

IPv4 addresses are typically divided into two parts: the network portion and the host portion.

IPv4 address can be divided into ________ classes.

• 2

• 3

• 4

• 5

Answer explanation

IPv4 addresses are classified into different address classes (Class A, B, C, D, and E), each with its own range of addresses designated for different purposes.

Give one benefit for compression code.

Answer explanation

Compression code will:

1. 1. Reduce the number of code to be transferred hence save the space.

2. 2. Reduce the time of transfer.

3. Pick only one.

In ________ multiplexing bandwidth on a communications link is divided into subchannels of different frequency widths, each carrying a signal in parallel with the other signals

• FDM

• TDM

• WDM

• CDM

Answer explanation

Frequency-division multiplexing (FDM). Bandwidth on a communications link is divided into subchannels of different frequency widths, each carrying a signal in parallel with the other signals.