Network Protocols and Architecture Pre Lesson Quiz 2

Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model?

• • application

• • presentation

• • session

• • transport

• • data link

Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

• • application

• • presentation

• • session

• • transport

• • network

Which statement describes a MAC address?

• It is 128-bits in length

• • It contains two portions, the network portion and the host portion.

• • It is a physical address assigned to an Ethernet NIC by the manufacturer.

• • It identifies the source and destination addresses of hosts on the Internet.

Which two layers of the OSI model specify protocols that are associated with Ethernet standards? (Choose two.)

• • physical layer

• • data link layer

• • network layer

• • transport layer

• • session layer

Which three fields are found in an 802.3 Ethernet frame? (Choose three.)

• • source physical address

• • source logical address

• • media type identifier

• • frame check sequence

• • destination logical address

Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?

• • SW1 floods the frame on all ports on the switch, excluding the interconnected port to switch SW2 and the port through which the frame entered the switch.

• • SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch.

• • SW1 forwards the frame directly to SW2. SW2 floods the frame to all ports connected to SW2, excluding the port through which the frame entered the switch.

• • SW1 drops the frame because it does not know the destination MAC address.

Which network device can serve as a boundary to divide a Layer 2 broadcast domain?

• • router

• • Ethernet bridge

• • Ethernet hub

• • access point

A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the ARP cache. How will the device obtain a destination MAC address?

• • It will send an ARP request for the MAC address of the destination device.

• • It will send an ARP request for the MAC address of the default gateway.

• It will send the frame and use the device MAC address as the destination

• It will send the frame with a broadcast MAC address

• • It will send an ARP request to the DNS server for the destination MAC address.

A router receives a packet from the Gigabit 0/0 interface and determines that the packet needs to be forwarded out the Gigabit 0/1 interface. What will the router do next?

• • route the packet out the Gigabit 0/1 interface

• • create a new Layer 2 Ethernet frame to be sent to the destination

• • look into the ARP cache to determine the destination IP address

• • look into the routing table to determine if the destination network is in the routing table

Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?

• • R1: G0/0

• • R1: S0/0/0

• • R2: S0/0/0

• • R2: S0/0/1