2.3.8 Practice Questions
Question: Which of the following is the process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium?
Transformation
Sequencing
Segmentation
Encapsulation
Answer: Encapsulation
Question: What is the purpose of a frame check sequence (FCS) footer?
Correct Answer:
Checksum error detection
Answer: Checksum error detection
Question: Which term does the OSI model use that’s different from the TCP/IP model in reference to the terms frame, packet, and segment?
Protocol data unit (PDU)
Answer: Protocol data unit (PDU)
Question: Match each TCP/IP layers with its function.
Breaks the data into pieces.
Transport
Prepares the data to be sent.
Application
Adds physical addesses.
Link
Adds logical addresses.
Internet
Answer: Breaks the data into pieces.
Transport
Prepares the data to be sent.
Application
Adds physical addesses.
Link
Adds logical addresses.
Internet
Question: Workstation2 needs to send data to Workstation3. Identify the Layer 2 and Layer 3 addresses Workstation2 will use to send the data by dragging the corresponding address from the list on the left to its location on the right.
Answer: Layer 2 source address
080046987654
Layer 3 source address
192.168.10.12
Layer 2 destination address
000b5f2a2222
Layer 3 destination address
192.168.11.11
Question:
Answer: Layer 2 source address
000b5f2a2222
Layer 3 source address
192.168.11.11
Layer 2 destination address
080046987654
Layer 3 destination address
192.168.10.12
Question: What role does ARP play in the routing process?
Answer: If a router does not know a destination device’s MAC address, it sends an ARP broadcast containing the destination device’s IP address and requesting its MAC address.
Question: Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?
Routers use ARP to resolve known IP addresses into MAC addresses.
Answer: Routers use ARP to resolve known IP addresses into MAC addresses.
Question: During network transmission, data is transferred to various routers, which forward the data to the appropriate network. If the source and destination network addresses reside on the same network, which protocol is used to determine the destination IP’s MAC address?
Answer: ARP
Question: TCP is a connection-oriented protocol that uses a three-way handshake to establish a connection to a system port. Computer 1 sends a SYN packet to Computer 2. Which packet does Computer 2 send back?
Answer: SYN/ACK