Unit 10 - part 2

What is the primary function of a codec?

• Compressing and decompressing data
• Encrypting data
• Transmitting data wirelessly
• Storing data

Which of the following is a disadvantage of packet switching?

• Efficient data movement
• Security benefits
• Loss or corruption of packets
• Reduces network clogging

What is the benefit of using serial data transmission?

• Faster data transfer
• Good over large distances
• Shorter distance required
• Simultaneous bit transfer

Which transmission mode allows signals to go in both directions at the same time?

• Simplex
• Half duplex
• Full duplex
• Asynchronous

What is the main purpose of compressing video files using a codec?

• To enhance video quality
• To make them playable on a computer
• To add special effects
• To encrypt the video

What does VoIP use at either end to encode and decode data?

• Routers
• Switches
• Codecs
• Firewalls

How does packet switching benefit data transmission in terms of security?

• Data is encrypted
• Small packets can choose different routes
• Only one packet can be intercepted at a time
• Data is sent whole

What is a potential problem with using codecs?

• They are expensive
• Compatibility issues
• They slow down data transfer
• They cannot compress audio files

What does half duplex transmission mode mean?

• Signals go in one direction at a time
• Signals go in both directions but not simultaneously
• Signals go in both directions at the same time
• Signals go in no direction

Which term describes the process of data being broken into packets before being sent through a network?

• Serial transmission
• Parallel transmission
• Packet switching
• Half duplex