Data Transmission Methods Quiz

Ethan is sending a large file to his friend Grace over the internet. What is the primary purpose of a data packet in network communication during this process?

• To store data permanently

• To encapsulate and transmit data across networks

• To encrypt data for security

• To compress data for faster transmission

During a school project, Anika is learning about data transmission. She discovers that a typical data packet structure consists of various components. Which of the following is NOT a component of a typical data packet structure?

• Header

• Payload

• Trailer

• Cache

In packet switching, what happens to data packets when they reach a network router in Lily's school network?

• They are stored until the destination is available

• They are sent in a continuous stream

• They are forwarded to the next hop based on the routing table

• They are discarded if they are too large

Liam is sending a message to Aria using a walkie-talkie that only allows one person to speak at a time. Which mode of data transmission is being used in this scenario?

• Full-duplex

• Half-duplex

• Simplex

• Parallel

During a group project, Zoe and Kai are discussing their ideas. What is the main difference between half-duplex and full-duplex communication in their conversation?

• Half-duplex allows simultaneous transmission, while full-duplex does not

• Full-duplex allows simultaneous transmission, while half-duplex does not

• Half-duplex is faster than full-duplex

• Full-duplex is used only in wired connections

Ethan is sending a message to Jackson over a network. To ensure that the message is received correctly, he uses a method of error detection that adds an extra bit to ensure the total number of 1s is even or odd. Which method is he using?

• Checksum

• Parity check

• Echo check

• Automatic Repeat Request (ARQ)

During a group project, Daniel sends a file to Sophia. What does a checksum do in error detection?

• It counts the number of packets sent

• It verifies the integrity of data by summing the data values

• It encrypts the data for security

• It checks for duplicate packets

During a group project, William is responsible for sending important files to his teammates. However, some files get lost or corrupted during transmission. In the context of error detection, what is the purpose of an Automatic Repeat Request (ARQ)?

• To automatically encrypt data

• To request the retransmission of lost or corrupted packets

• To compress data for faster transmission

• To establish a secure connection

Benjamin and Scarlett are discussing encryption methods for securing their online communications. Which of the following statements is true about symmetric encryption?

• It uses two different keys for encryption and decryption

• It is faster than asymmetric encryption

• It is less secure than asymmetric encryption

• It requires a public key for encryption

Benjamin wants to send a secret message to Rohan without anyone else being able to read it. What is a key characteristic of asymmetric encryption?

• It uses the same key for both encryption and decryption

• It requires a pair of keys: a public key and a private key

• It is only used for data compression

• It is faster than symmetric encryption