PQ 2.4.6 Data Encapsulation and Communications

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 MAC address of the destination IP address?

ARP

Match the TCP/IP layers with their function.

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

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

Checksum error detection

The process of breaking a message into packets, adding control information and other information, and then transmitting the message through the transmission medium is known as __________?

Encapsulation

What role does ARP play in the routing process?

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.

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

What term does the OSI model use that is different from the TCP/IP model uses to refer to frame, packet, and segment?

Protocol data unit (PDU)

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.

Drag the information type on the left to the appropriate layer of the TCP/IP model it is associated with on the right.

Transport Layer Segments Link Layer Frames Application Layer Data Internet Layer Packets