CCAN 2 Ch 6: Static Routing

Question 1

What are two [2] advantages of static routing over dynamic routing?

Answer 1

1. Static routing is more secure because it does not advertise over the network.
2. Static routing uses fewer router resources than dynamic routing.

Question 2

Which is the best way for PC A and PC B to successfully communicate with sites on the Internet?

Answer 2

Configure a default route from R1 to ISP and a static route from ISP to R1.

Question 3

he small company shown uses static routing. Users on the R2 LAN have reported a problem with connectivity. What is the issue?

Answer 3

R1 needs a static route to the R2 LAN.

Question 4

The network engineer for the company that is shown wants to use the primary ISP connection for all external connectivity. The backup ISP connection is used only if the primary ISP connection fails. Which set of commands would accomplish this goal?

Answer 4

ip route 0.0.0.0 0.0.0.0 s0/0/0

ip route 0.0.0.0 0.0.0.0 s0/1/0 10

Question 5

What type of route allows a router to forward packets even though its routing table contains no specific route to the destination network?

Answer 5

default route

Question 6

Which command would be used on router A to configure a static route to direct traffic from LAN A that is destined for LAN C?

Answer 6

A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2

Question 7

The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table?

Answer 7

S 172.16.1.0 [1/0] via 172.16.2.2

Question 8

The network administrator needs to configure a default route on the Border router. Which command would the administrator use to configure a default route that will require the least amount of router processing when forwarding packets?

Answer 8

Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1

Question 9

Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?

Answer 9

to be used as a backup route

Question 10

What command would be used to configure a static route on R1 so that traffic from both LANs can reach the 2001:db8:1:4::/64 remote network?

Answer 10

ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2

Question 11

Which default static route command would allow R1 to potentially reach all unknown networks on the Internet?

Answer 11

R1(config)# ipv6 route ::/0 G0/1 fe80::2

Question 12

Which two statements describe classful IP addresses?

Answer 12

1. All subnets in a network are the same size.

2. The number of bits used to identify the hosts is fixed by the class of the network.

Question 13

A company has several networks with the following IP address requirements:
IP phones – 50
PCs – 70
IP cameras – 10
wireless access points – 10
network printers – 10
network scanners – 2

Which block of addresses would be the minimum to accommodate all of these devices if each type of device was on its own network?

Answer 13

172.16.0.0/24

Question 14

What does VLSM allow a network administrator to do?

Answer 14

utilize multiple different subnet masks in the same IP address space

Question 15

What would be the best summary route for the following networks?

10. 50.168.0/23
11. 50.170.0/23
12. 50.172.0/23
13. 50.174.0/24

Answer 15

10.50.168.0/21

Question 16

What is a valid summary route for IPv6 networks 2001:0DB8:ACAD:4::/64, 2001:0DB8:ACAD:5::/64, 2001:0DB8:ACAD:6::/64, and 2001:0DB8:ACAD:7::/64?

Answer 16

2001:0DB8:ACAD:0004::/62

Question 17

Which type of static route that is configured on a router uses only the exit interface?

Answer 17

directly connected static route

Question 18

Which three [3] IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.)

Answer 18

1. show ip route*
2. show ip interface brief
3. ping

Question 19

What two [2] commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)

Answer 19

1. A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

2. A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2

Question 20

What happens to a static route entry in a routing table when the outgoing interface is not available?

Answer 20

The route is removed from the table.

Question 21

What IPv6 static route can be configured on router R1 to make a fully converged network?

Answer 21

ipv6 route 2001:db8:10:12::/64 S0/0/1