CS601 Quiz 3 by HB

A switched network consists of a series of interlinked _____ called switches.

a. Points · b. Nodes · c. Roots · d. Systems

In digital communication, why do we use a checksum for error detection in a message?

1. To ensure even or odd parity
2. To facilitate faster data transmission
3. To correct errors
4. To encrypt the data

__________ is the process of converting digital data to digital signals.

a. CSMA/CD · b. Segmentation · c. Line coding · d. CSMA/CA

The primary cause of unpredictable changes in bits during data transmission is _______

a. interference · b. framing · c. encryption · d. decapsulation

In Block coding scheme, number of code words is always __________ data words.

a. Same as · b. Greater than · c. Equal to · d. Less than

Datagram approach and virtual circuit approach are two popular approaches which lead us to ______________.

a. Line switching · b. Packet switching · c. Circuit switching · d. Dynamic switching

In Linear Block codes, _______ of two valid code words creates another valid code word.

a. XOR · b. NOR · c. AND · d. OR

In _________ systems, resources are allocated on demand.

a. Circuit switching · b. Line switching · c. Frequency switching · d. Packet switching

In cross bar switch, the cross points can be calculated by_____ inputs and outputs.

a. Adding · b. Multiplying · c. Dividing · d. Subtracting · Redundancy contribute to error detection by _______ · a. reducing the size of data frames · b. encrypting data for secure transmission · c. increasing the speed of data transmission