Chapter 2

What is a data packet?

• A small segment of data transmitted over a network

• A complete data file sent over a network

• A type of physical network device

• A protocol used to ensure data security

Which of the following is NOT typically included in a data packet?

• Source address

• Destination address

• Data payload

• User password

What information does the sequence number in a data packet header provide?

• The total size of the packet

• The order of packets in a sequence

• The encryption key for the packet

• The type of data being transmitted

Which network component is primarily responsible for directing packets in a packet-switched network?

• Modem

• Switch

• Router

• Hub

Which of the following is an example of simplex communication?

• Telephone call

• Walkie-talkie

• Television broadcast

• Video conference

Which device typically uses half-duplex communication?

• Mobile phone

• Walkie Talkie

• Television

• Fax Machine

Which of the following is an example of full-duplex communication?

• Walkie-talkie

• Radio broadcast

• Video conference

• Keyboard and monitor

What is serial data transmission?

• Transmission of data one bit at a time over a single channel

• Transmission of multiple bits simultaneously over multiple channels

• Transmission of data in both directions simultaneously

• Transmission of data using a dedicated channel for each bit

Which transmission type is generally faster over short distances?

• Serial transmission

• Parallel transmission

• Both are equally fast

• It depends on the type of data

What does USB stand for?

• Universal System Bus

• Unified System Bus

• Unified Serial Bus

• Universal Serial Bus