ICS 621 Chapter 1

IP address default gateway subnet mask

In order for packets to be sent to a remote destination, what three pieces of information must be configured on a host?

192.168.12.16

PC A is connected to switch S1, which in turn is connected to router R1. Router R1 is connected to a cloud, and the cloud is connected to Server B. At one side of the PC is a label with the following information: PC A MAC address: 00-0B-85-7F-47-00 IPv4 address: 192.168.10.10At one side of the switch is a label with the following information: S1 MAC address: 00-0B-85-D0-BB-F7 IPv4 address: 192.168.11.1 At one side of the router is a label with the following information: R1 MAC address: 00-0B-85-7F-86-B0 IPv4 address: 192.168.10.1 At one side of the server is a label with the following information: SERVER B MAC address: 00-0B-85-7F-0A-0B IPv4 address: 192.168.12.16 Refer to the exhibit. PC A sends a request to Server B. What IPv4 address is used in the destination field in the packet as the packet leaves PC A?

remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0

Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?

172.16.2.2

Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.) Graphic contains output of show ip route as follows: R3# show ip route 172.16.0.0/24 is subnetted, 3 subnets C 172.16.0.0 is directly connected, Serial0/1/0 D 172.16.1.0 [90/21024000] via 172.16.0.1, 00:22:15, Serial0/1/0 C 172.16.2.0 is directly connected, Serial0/1/0 10.0.0.0/24 is subnetted, 1 subnets S 10.2.0.0/24 [1/0] via 172.16.2.2 C 10.3.0.0 is directly connected, FastEthernet0/0 NEXT HOP

D

Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.) Graphic contains output of show ip route as follows: R3# show ip route 172.16.0.0/24 is subnetted, 3 subnets C 172.16.0.0 is directly connected, Serial0/1/0 D 172.16.1.0 [90/21024000] via 172.16.0.1, 00:22:15, Serial0/1/0 C 172.16.2.0 is directly connected, Serial0/1/0 10.0.0.0/24 is subnetted, 1 subnets S 10.2.0.0/24 [1/0] via 172.16.2.2 C 10.3.0.0 is directly connected, FastEthernet0/0 ROUTE SOURCE PROTOCOL

1

Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.) Graphic contains output of show ip route as follows: R3# show ip route 172.16.0.0/24 is subnetted, 3 subnets C 172.16.0.0 is directly connected, Serial0/1/0 D 172.16.1.0 [90/21024000] via 172.16.0.1, 00:22:15, Serial0/1/0 C 172.16.2.0 is directly connected, Serial0/1/0 10.0.0.0/24 is subnetted, 1 subnets S 10.2.0.0/24 [1/0] via 172.16.2.2 C 10.3.0.0 is directly connected, FastEthernet0/0 ADMINISTRATIVE DISTANCE

10.3.0.0

Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.) Graphic contains output of show ip route as follows: R3# show ip route 172.16.0.0/24 is subnetted, 3 subnets C 172.16.0.0 is directly connected, Serial0/1/0 D 172.16.1.0 [90/21024000] via 172.16.0.1, 00:22:15, Serial0/1/0 C 172.16.2.0 is directly connected, Serial0/1/0 10.0.0.0/24 is subnetted, 1 subnets S 10.2.0.0/24 [1/0] via 172.16.2.2 C 10.3.0.0 is directly connected, FastEthernet0/0 DESTINATION NETWORK

00:22:15

Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.) Graphic contains output of show ip route as follows: R3# show ip route 172.16.0.0/24 is subnetted, 3 subnets C 172.16.0.0 is directly connected, Serial0/1/0 D 172.16.1.0 [90/21024000] via 172.16.0.1, 00:22:15, Serial0/1/0 C 172.16.2.0 is directly connected, Serial0/1/0 10.0.0.0/24 is subnetted, 1 subnets S 10.2.0.0/24 [1/0] via 172.16.2.2 C 10.3.0.0 is directly connected, FastEthernet0/0 ROUTE TIMESTAMP

IP address Layer 1 statuses

What two pieces of information are displayed in the output of the show ip interface brief command?

routing

When a router receives a packet, it examines the destination address of the packet and looks in the ———- table to determine the best path to use to forward the packet.

Cisco Express Forwarding

Which packet-forwarding method does a router use to make switching decisions when it is using a forwarding information base and an adjacency table?

terminal emulation client software

Which software is used for a network administrator to make the initial router configuration securely?

Destination IP address subnet mask

Which two items are used by a host device when performing an ANDing operation to determine if a destination address is on the same local network?

bandwidth delay

Which two parameters are used by EIGRP as metrics to select the best path to reach a network?

Administrative distance refers to the trustworthiness of a particular route Routes with the smallest metric to a destination indicate the best path

Which two statements correctly describe the concepts of administrative distance and metric?

Administrative distance refers to the trustworthiness of a particular route Routes with the smallest metric to a destination indicate the best path

Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.)

to provide a route to forward packets for which there is no route in the routing table

A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?

The interface fa0/0 has not been activated

A network administrator configures the interface fa0/0 on the router R1 with the command ip address 172.16.1.254 255.255.255.0. However, when the administrator issues the command show ip route, the routing table does not show the directly connected network. What is the possible cause of the problem?

NVRAM

A network administrator enters the command copy running-config startup-config. Which type of memory will the startup configuration be placed into?

It is the interface on R1 used to send data that is destined for 10.1.1.0/24

Consider the following routing table entry for R1: D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0 What is the significance of the Serial0/0/0?

If the destination MAC address that corresponds to the IPv4 address is not in the ARP cache, R1 sends an ARP request*

Server B is connected to switch S1, which in turn is connected to router R1. Router R1 is connected to a cloud, and the cloud is connected to PC A. At one side of the server is a label with the following information: SERVER B MAC address: 00-0B-85-7F-0A-0B IPv4 address: 192.168.10.16At one side of the switch is a label with the following information: S1 MAC address: 00-0B-85-D0-BB-F7 IPv4 address: 192.168.11.1 At one side of the router is a label with the following information: R1 MAC address: 00-0B-85-7F-86-B0 IPv4 address: 192.168.10.1 At one side of the PC is a label with the following information: PC A MAC address: 00-0B-85-7F-47-00 IPv4 address: 192.168.12.10 Refer to the exhibit. What does R1 use as the MAC address of the destination when constructing the frame that will go from R1 to Server B?

Send the packet out the Serial0/0/0 interface*

The exhibit shows the following router output: The gateway of last resort is 209.165.200.226 to network 0.0.0.0 S* 0.0.0.0/0 [1/0] via 209.165.200.226 192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.10.0/24 is directly connected, GigabitEthernet0/0 L 192.168.10.1/32 is directly connected, GigabitEthernet0/0 192.168.11.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.11.0/24 is directly connected, GigabitEthernet0/1 L 192.168.11.1/32 is directly connected, GigabitEthernet0/1 209.165.200.0/24 is variably subnetted, 2 subnets, 2 masks C 209.165.200.224/30 is directly connected, Serial0/0/0 L 209.165.200.225/32 is directly connected, Serial0/0/0 Refer to the exhibit. What will the router do with a packet that has a destination IP address of 192.168.12.227?

a default static route a static route to a specific network

What are two common types of static routes in routing tables?

A router connects multiple IP networks It determines the best path to send packets

What are two functions of a router?

It is a logical interface internal to the router

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​

to enable the router as an IPv6 router

What is the effect of configuring the ipv6 unicast-routing command on a router?

A directly connected network

What route would have the lowest administrative distance?