DCCN-Chapt-1

What is the definition of data communication?

• Exchange of data between devices via a medium
• Exchange of voice signals only
• Communication between people
• Sharing of hardware resources

What is an example of remote communication?

• Face-to-face interaction
• Writing a note
• Speaking in person
• Video call over the Internet

Which characteristic ensures data must reach the correct destination?

• Timeliness
• Delivery
• Accuracy
• Jitter

What does jitter refer to in data communication?

• Speed of data transmission
• Loss of data during transmission
• Variation in packet arrival time
• Size of transmitted data

What type of communication does a keyboard to monitor represent?

• Full-Duplex
• Broadcast
• Simplex
• Half-Duplex

In which communication mode do devices take turns transmitting and receiving?

• Full-Duplex
• Half-Duplex
• Simplex
• Broadcast

What was the first network developed by ARPA in 1969?

• TCP/IP
• ARPANET
• Internet
• Ethernet

What protocol is used for transferring files between devices?

• FTP
• DNS
• SMTP
• HTTP

What does DNS stand for?

• Domain Name System
• Domain Name Service
• Data Name System
• Digital Network Service

What is an example of unicast communication?

• Sending an email to one person
• Broadcasting a TV signal
• Streaming video to multiple users
• File sharing with a group