2.3.8 Practice Questions

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?

ARP

Match each TCP/IP layers with its function.

Breaks the data into pieces: Transport Prepares the data to be sent: Application Adds physical addresses: Link Adds logical addresses: Internet

What is the purpose of a frame check sequence (FCS) footer?

Checksum error detection

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?

Encapsulation

Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?

Hosts use ARP to resolve known IP addresses into MAC addresses.

Workstation3 has started communicating with Workstation2. It sends a frame to the default gateway. Identify the Layer 2 and Layer 3 addresses used by the Cisco 2600 router to forward the data to Workstation2 by dragging the corresponding address from the list on the left to its location on the right.

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

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.

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

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)

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?

SYN/ACK

When does a router use ARP?

When the router's routing table doesn't contain the MAC addresses of devices on the local LAN that they need to forward frames to.