Network Technology - Transport Layer

What is the name of the PDU at the Transport Layer?

• Segment
• Packet
• Frame
• Data
• Bits

A wireless host needs to request an IP address. What protocol would be used to process the request?

• FTP
• TCP
• UDP
• DHCP
• ICMP

What is a responsibility of transport layer protocols?

• Providing network access
• Tracking individual conversations
• Determining the best path to forward a packet
• Translating private IP addresses to public IP addresses

Which two operations are provided by TCP but not by UDP? (Choose two.)

• Identifying the applications
• Acknowledging received data
• Tracking individual conversations
• Retransmitting any unacknowledged data
• Reconstructing data in the order received

What type of applications are best suited for using UDP?

• Applications that are sensitive to delay
• Applications that need reliable delivery
• Applications that require retransmission of lost segments
• Applications that are sensitive to packet loss

What happens if part of an FTP message is not delivered to the destination?

• The message is lost because FTP does not use a reliable delivery method.
• The FTP source host sends a query to the destination host.
• The part of the FTP message that was lost is re-sent.
• The entire FTP message is re-sent.

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

• ACK
• FIN
• PSH
• SYN
• URG

Which number or set of numbers represents a socket?

• 01-23-45-67-89-AB
• 21
• 192.168.1.1:80
• 10.1.1.15

What is the purpose of using a source port number in a TCP communication?

• To notify the remote device that the conversation is over
• To assemble the segments that arrived out of order
• To keep track of multiple conversations between devices
• To inquire for a nonreceived segment

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)

• FTP
• DNS
• HTTP
• POP3
• VoIP