Network Communication Quiz

What is a protocol in the context of network communication?

• A device used to manage network traffic

• A set of rules that define how devices will communicate on the network

• A type of network topology

• A software program that controls data transfer speeds

Answer explanation

A protocol in network communication is a set of rules that define how devices will communicate on the network, ensuring consistency and proper data exchange.

Which two transmission protocols are most used according to the text?

• Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP)

• Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)

• Simple Mail Transfer Protocol (SMTP) and Post Office Protocol (POP)

• Internet Protocol (IP) and Ethernet

Answer explanation

TCP and UDP are the most used transmission protocols according to the text.

What is the purpose of a packet header in data packets?

• To define the sender, receiver, and order position of the packet

• To increase the speed of data transfer across the network

• To encrypt the data being sent for security purposes

• To compress the data to reduce its size

Answer explanation

The purpose of a packet header in data packets is to define the sender, receiver, and order position of the packet.

How does the Transmission Control Protocol (TCP) ensure the reliability of data transmission?

• By compressing the data to make it faster to send

• By sending data in one large chunk to minimize packet loss

• By ensuring that every sent packet is received before sending the next packet

• By converting the data into an analog signal for transmission

Answer explanation

TCP ensures reliability by ensuring that every sent packet is received before sending the next packet, reducing the risk of data loss or corruption.

What is the first step in establishing a connection using TCP?

• The first host sends an ACK packet to open the session.

• The receiving host sends a SYN-ACK packet acknowledging the new session.

• The first host sends a SYN packet asking to create a new session.

• The receiving host sends an ACK packet back to the sender after receiving information.

Answer explanation

The first step in establishing a connection using TCP is for the first host to send a SYN packet asking to create a new session.

What happens if the sending host does not receive an ACK packet within a specified time?

• The session is immediately terminated.

• The sending host sends another copy of the missing packet.

• The receiving host sends a SYN-ACK packet again.

• The connection is switched from TCP to UDP.

Answer explanation

If the sending host does not receive an ACK packet within a specified time, it will send another copy of the missing packet to ensure reliable data transmission.

Which of the following best describes the TCP/IP protocol suite?

• TCP is responsible for determining how to deliver data between two hosts, while IP is responsible for segmenting and sequencing of the data packets.

• IP is responsible for determining how to deliver data between two hosts, while TCP is responsible for segmenting and sequencing of the data packets.

• TCP is used for sending data across the internet without the need for IP.

• IP is used to send data across a network without the need for TCP.

Answer explanation

The correct choice is that IP is responsible for determining how to deliver data between two hosts, while TCP is responsible for segmenting and sequencing of the data packets.

How does UDP differ from TCP?

• UDP is a connectionless protocol that verifies each packet sent is received.

• UDP is a connection-oriented protocol that requires a 3-way handshake.

• UDP sends packets one at a time and does not guarantee that packets are received.

• UDP requires the receiving host to send an ACK packet for each packet received.

Answer explanation

UDP sends packets one at a time and does not guarantee that packets are received, distinguishing it from TCP.

UDP is commonly used for applications that require which of the following characteristics?

• High reliability and error correction

• Low latency

• High bandwidth utilization

• Sequential data transfer

Answer explanation

UDP is commonly used for applications that require low latency, making it the correct choice among the given characteristics.

Which of the following is NOT a common use of UDP?

• Video and audio streaming

• Online gaming

• File encryption

• Voice over IP (VOIP)

Answer explanation

File encryption is NOT a common use of UDP. UDP is commonly used for video and audio streaming, online gaming, and Voice over IP (VOIP).