Exam 3

Which two functions are primary functions of a router? (Choose two.)

1. Packet forwarding 2. Path selection

Refer to the exhibit. A user PC has successfully transmitted packets to www.cisco.com. Which IP address does the user PC target in order to forward its data off the local network?

172.20.0.254 (254)

Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer?

ARP Cache

What will happen if the default gateway address is incorrectly configured on a host?

Cannot communicate in other networks

A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?

Cleared

What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?

Destination MAC address

What property of ARP allows hosts on a LAN to send traffic to remote networks?

Local hosts learn

Match the commands to the correct actions

Provide security = password class Displays a message = banner motd Configures a name = hostname CL1

PT Activity

R1: G0/0 and S0/0/0 R2: G0/1 and S0/0/0

Which statement describes a feature of the IP protocol?

Relies on upper layers

What routing table entry has a next hop address associated with a destination network?

Remote routes

Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?

port 4.

Why is NAT not needed in IPv6?

Extremely large

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

Invalid default gateway

Match the phases to the functions during the boot up process of a Cisco router. (Not all options are used.)

Phase 1 = Perform the POST Phase 2 = Locate and load the cisco Phase 3 = Locate and load the startup

What are two functions of NVRAM? (Choose two.)

1. to retain 2. to store the startup

Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)

1. The frame has broadcast 2. The destination address unknown

Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)

1. password cisco 2. line console 0 3. login

Refer to the exhibit. A network administrator is connecting a new host to the Payroll LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?

10.27.14.148 (148)

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.)

5 = 1/1 10 = 1/0 8 = 0/1 20 = Serial 15 = 0/0

What happens when the transport input ssh command is entered on the switch vty lines?

Communication encrypted

What are two services provided by the OSI network layer? (Choose two.)

Encapsulate Routing

Match the command with the device mode at which the command is entered. (Not all options are used.)

Login = config line Service Password = config IP Address = config if Copy = R1# Enable = R1>

What statement describes the function of the Address Resolution Protocol?

MAC address on local network.

A router boots and enters setup mode. What is the reason for this?

NVRAM

What is the effect of using the Router# copy running-config startup-config command on a router?

NVRAM

What are two potential network problems that can result from ARP operation? (Choose two.)

On large networks Network attackers

Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?

PC1 LAN to Router1.

What information does the loopback test provide?

The TCP/IP stack on the device is working correctly.

Within a production network, what is the purpose of configuring a switch with a default gateway address?

The default gateway

Which statement describes the treatment of ARP requests on the local link?

They are received and processed by every device on the local network. (Longest answer)

How do hosts ensure that their packets are directed to the correct network destination?

They have

Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?

Version