NET130 - Routing(CH6)

the IP address of the next-hop neighbor; the interface ID exit interface;

What two pieces of information are needed in a fully specified static route to eliminate recursive lookups? (Choose two.) the interface ID of the next-hop neighbor; the IP address of the exit interface; the administrative distance for the destination network; the IP address of the next-hop neighbor; the interface ID exit interface;

default route

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

10.50.168.0/21*

What would be the best summary route for the following networks? 10.50.168.0/23 10.50.170.0/23 10.50.172.0/23 10.50.174.0/24 10.50.160.0/22 10.50.164.0/23 10.50.168.0/16 10.50.168.0/21 10.50.168.0/22 10.50.168.0/23

Write all network numbers in binary.*

What would be the first step in calculating a summarized route for 5 networks? Write all subnet masks in binary. Write all network numbers in binary. Starting from the far right, determine the octet in which all the numbers are the same. Determine the network with the lowest number.

What is a supernet? the network for a default route ; a network that contains both private and public addresses; a set of discontiguous networks that are controlled by an ISP; a summarization of serveral IP classful networks into one IP address range;

a summarization of serveral IP classful networks into one IP address range; topic: 6.3.2

172.16.0.0/24 50 - 2*6=/26 70 - 2*7=/25 10 - 2*4=/28---->3 nw 2 - /30 152 - 2*8=/24

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? 172.16.0.0/23 172.16.0.0/24 172.16.0.0/22 172.16.0.0/25

encapsulates the packet into a frame for the WAN link and forwards the packet out the S0/1/0 interface topic: 6.2.1

A network administrator enters the following command into Router1: ip route 192.168.0.0 255.255.255.0 S0/1/0. Router1 then receives a packet that is destined for 192.168.0.22/24. After finding the recently configured static route in the routing table, what does Router1 do next to process the packet?

S 172.16.1.0 [1/0] via 172.16.2.2

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? S 172.16.1.0 is directly connected, Serial0/0 S 172.16.1.0 [1/0] via 172.16.2.2 C 172.16.1.0 [1/0] via 172.16.2.2 C 172.16.1.0 is directly connected, Serial0/0

Manually shut down the router interface used as a primary route.

Consider the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.2 5 How would an administrator test this configuration? Delete the default gateway route on the router. Ping from the 192.168.10.0 network to the 10.10.10.2 address. Manually shut down the router interface used as a primary route. Ping any valid address on the 192.168.10.0/24 network.

floating topic: 6.1.2

Fill in the blank. A _______ static route can be used to provide a backup route to a dynamically learned route.

192.168.2.2 topic: 6.2.1 When a static route is to be configured via the next-hop IP address, the IP address of the interface of the next router in the path to the destination is used.

Fill in the blank. Refer to the exhibit. On R1, the command to configure a static route to network 172.16.2.0 by specifying the next-hop IP address is ip route 172.16.2.0 255.255.255.0 __________.

What command, or set of commands, would be used to determine if the following configuration on router HQ works as designed? ip route 0.0.0.0 0.0.0.0 serial 0/0/0 10 ip route 0.0.0.0 0.0.0.0 serial 0/1/0 HQ(config)# interface serial 0/1/0 HQ(config-if)# shutdown HQ(config-if)# end HQ# show ip route HQ# traceroute 128.107.0.99 HQ# show ip interface brief HQ# ping 128.107.0.99 HQ# ping 64.100.0.5 HQ# show ip route

HQ(config)# interface serial 0/1/0 HQ(config-if)# shutdown HQ(config-if)# end HQ# show ip route topic: 6.5.2 To test a floating static route, take down the main route/link in order to see whether the backup link appears in the routing table. The show ip route command simply shows the routing table. Only one of the static routes would be shown at any one time

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

Refer to the exhibit. 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? Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1 Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.5 Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/0 Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.6

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

Refer to the exhibit. 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? ip route 198.133.219.24 255.255.255.252 ip route 64.100.210.80 255.255.255.252 ip route 198.133.219.24 255.255.255.252 ip route 64.100.210.80 255.255.255.252 10 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 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

R1 needs a static route to the R2 LAN.

Refer to the exhibit. The small company shown uses static routing. Users on the R2 LAN have reported a problem with connectivity. What is the issue? R2 needs a static route to the Internet. R1 and R2 must use a dynamic routing protocol. R1 needs a default route to R2. R2 needs a static route to the R1 LANs. R1 needs a static route to the R2 LAN.

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

Refer to the exhibit. 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? ipv6 route 2001:db8:1::/65 2001:db8:1:3::1 ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2 ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::1 ipv6 route ::/0 serial0/0/0

A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2 A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

Refer to the exhibit. What two 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.) A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2 A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2 A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2 A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0 A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2

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

Refer to the exhibit. Which default static route command would allow R1 to potentially reach all unknown networks on the Internet? R1(config)# ipv6 route 2001:db8:32::/64 G0/1 fe80::2 R1(config)# ipv6 route ::/0 G0/0 fe80::2 R1(config)# ipv6 route ::/0 G0/1 fe80::2 R1(config)# ipv6 route 2001:db8:32::/64 G0/0

R1(config)# ipv6 route 2001:db8:32::/64 G0/1 fe80::2

Refer to the exhibit. Which default static route command would allow R1 to potentially reach all unknown networks on the Internet? R1(config)# ipv6 route ::/0 G0/0 fe80::2 R1(config)# ipv6 route ::/0 G0/1 fe80::2 R1(config)# ipv6 route 2001:db8:32::/64 G0/0 R1(config)# ipv6 route 2001:db8:32::/64 G0/1 fe80::2

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

Refer to the exhibit. Which is the best way for PC A and PC B to successfully communicate with sites on the Internet? Configure a default route from R1 to ISP and a static route from ISP to R1. Configure a static route from R1 to ISP and a dynamic route from ISP to R1. Configure a routing protocol between R1 and ISP and advertise all the routes. Configure a dynamic route from R1 to ISP and a static route from ISP to R1.

Park(config)# ip route 0.0.0.0 0.0.0.0 192.168.14.1 Alta(config)# ip route 10.0.234.0 255.255.255.0 192.168.14.2 Alta(config)# ip route 0.0.0.0 0.0.0.0 s0/0/0

Refer to the exhibit. Which set of commands will configure static routes that will allow the Park and the Alta routers to a) forward packets to each LAN and b) direct all other traffic to the Internet? Park(config)# ip route 0.0.0.0 0.0.0.0 192.168.14.1 Alta(config)# ip route 10.0.234.0 255.255.255.0 192.168.14.2 Alta(config)# ip route 0.0.0.0 0.0.0.0 s0/0/0 Park(config)# ip route 0.0.0.0 0.0.0.0 192.168.14.1 Alta(config)# ip route 10.0.234.0 255.255.255.0 192.168.14.2 Alta(config)# ip route 198.18.222.0 255.255.255.255 s0/0/0 Park(config)# ip route 172.16.67.0 255.255.255.0 192.168.14.1 Park(config)# ip route 0.0.0.0 0.0.0.0 192.168.14.1 Alta(config)# ip route 10.0.234.0 255.255.255.0 192.168.14.2 Park(config)# ip route 172.16.67.0 255.255.255.0 192.168.14.1 Alta(config)# ip route 10.0.234.0 255.255.255.0 192.168.14.2 Alta(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1

A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2

Refer to the graphic. 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? A(config)# ip route 192.168.3.2 255.255.255.0 192.168.4.0 A(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2 A(config)# ip route 192.168.3.0 255.255.255.0 192.168.3.1 A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2 A(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2

Fill in the blank. A --------- network is a network that is accessed by a single route.

Stub

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

What are two advantages of static routing over dynamic routing? (Choose two.) Static routing is more secure because it does not advertise over the network. Static routing is relatively easy to configure for large networks. Static routing requires very little knowledge of the network for correct implementation. Static routing uses fewer router resources than dynamic routing. Static routing scales well with expanding networks.

Static routing is more secure. Static routing uses less router processing and memory. topic: 6.1.1

What are two reasons why an administrator might choose to use static routing rather than dynamic routing? (Choose two.) Static routing is easier to maintain in large networks. Static routing is more secure; Static routing is more scalable; Static routing uses less router processing and memory; Static routing does not require complete knowledge of the whole network;

utilize multiple different subnet masks in the same IP address space*;

What does VLSM allow a network administrator to do? utilize one public IP address to translate multiple private addresses; utilize multiple different subnet masks in the same IP address space; utilize one dynamic routing protocol throughout the entire network; utilize multiple routing protocols within an autonomous system; utilize one subnet mask throughout a hierarchical network;

The static route is removed from the routing table. When the interface associated with a static route goes down, the router will remove the route because it is no longer valid. 6.5.2 Troubleshoot IPv4 Static and Default Route Configuration

What happens to a static route entry in a routing table when the outgoing interface associated with that route goes into the down state? The static route remains in the table because it was defined as static. The router polls neighbors for a replacement route. The static route is removed from the routing table. The router automatically redirects the static route to use another interface.

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

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? 2001:0DB8:ACAD:0000::/63 2001:0DB8:ACAD:0000::/64 2001:0DB8:ACAD:0004::/62 2001:0DB8:ACAD:0004::/63

ip route 209.165.200.228 255.255.255.248 10.0.0.1 120*

What is the correct syntax of a floating static route? ip route 172.16.0.0 255.248.0.0 10.0.0.1 ip route 209.165.200.228 255.255.255.248 10.0.0.1 120 ip route 209.165.200.228 255.255.255.248 serial 0/0/0 ip route 0.0.0.0 0.0.0.0 serial 0/0/0

the interface ID exit interface* the IP address of the next-hop neighbor*

What two pieces of information are needed in a fully specified static route to eliminate recursive lookups? (Choose two.) the IP address of the exit interface the interface ID exit interface the IP address of the next-hop neighbor the interface ID of the next-hop neighbor the administrative distance for the destination network

ipv6 route ::/0 2001:db8:acad:2::a topic: 6.2.4 The correct prefix and prefix length for a default route is ::/0, which matches any address. ::/128 matches only the specific address of all zeros. When creating a static route that uses a link-local address as the next hop, an exit interface must also be specified for the route to be valid.

Which command would create a valid IPv6 default route? ipv6 route ::/0 fe80::1 ipv6 route 2001:db8:acad:1::/64 ::1 ipv6 route ::/0 2001:db8:acad:2::a ipv6 route ::/128 2001:db8:acad:1::1

192.168.0.0/19

Which is a valid summary route for networks 192.168.8.0/22, 192.168.12.0/22, and 192.168.16.0/22? 192.168.0.0/18 192.168.0.0/19 192.168.0.0/20 192.168.8.0/21

ipv6 route 2001:db8:cafe:1::/56 2001:db8:1000:10::1

Which static route statement shows a recursive IPv6 static route? ipv6 route 0::/0 S0/0/0 ipv6 route 0::/0 S0/0/0 254 ipv6 route 2001:db8:cafe:1::/56 S0/0/0 ipv6 route 2001:db8:cafe:1::/56 2001:db8:1000:10::1 ipv6 route 2001:db8:cafe:1::/56 S0/0/0 2001:db8:1000:10::1

show ip interface brief show ip route ping

Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.) show arp show ip interface brief show version tracert show ip route ping

The destination networks are contiguous and can be summarized into a single network address. The multiple static routes all use the same exit-interface or next-hop IPv6 address. topic: 6.4.2 Static IPv6 routes can be summarized into a single static IPv6 route if the destination networks are contiguous and can be summarized into a single network address. Moreover, all static routes have to use the same exit-interface or next-hop IPv6 address. Floating static routes are static routes that have an administrative distance greater than the administrative distance of another static or dynamic route.

Which two conditions must exist in order to summarize IPv6 routes into a single static IPv6 route? (Choose two.) The destination networks are contiguous and can be summarized into a single network address. The multiple static routes all use different exit-interface or next-hop IPv6 address. The destination networks are not contiguous. The multiple static routes all use the same exit-interface or next-hop IPv6 address. The administrative distance is greater than the administrative distance of another static route or dynamic routes.

All subnets in a network are the same size. The number of bits used to identify the hosts is fixed by the class of the network.

Which two statements describe classful IP addresses? (Choose two.) Up to 24 bits can make up the host portion of a Class C address. All subnets in a network are the same size. Only Class A addresses can be represented by high-order bits 100. The number of bits used to identify the hosts is fixed by the class of the network. It is possible to determine which class an address belongs to by reading the first bit. Three of the five classes of addresses are reserved for multicasts and experimental use.

directly connected static route*

Which type of static route that is configured on a router uses only the exit interface? directly connected static route fully specified static route default static route recursive static route

to be used as a backup route

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? to be the priority route in the routing table to be used as a backup route to act as a gateway of last resort to load-balance the traffic

What type of static route is created when the next-hop IP address and exit interface are specified? recursive static route; directly connected static route; fully specified static route; floating static route;

fully specified static route topic: 6.2.1 A fully specified static route has the next-hop IP address and exit interface specified. A recursive static route has only the next-hop IP address specified. A directly attached static route has only the router exit interface specified. A floating static route has a higher metric than the dynamic routes and serves as a backup route.

Why would a summarized static route be configured on a router? to reduce the number of public IP addresses required by an organization; to provide a better route than a particular routing protocol; to provide a default gateway for a router that connects to an ISP; to reduce the size of the routing table; to reduce the size of the routing protocol update to a neighboring router

to reduce the size of the routing table; topic: 6.3.2 A summary route represents multiple networks. A summarized static route does not necessarily provide a better route than a routing protocol does. A default static route would provide a default gateway for a router that is connected to an ISP. Routing protocol updates may not necessarily be reduced in size if static route routes are also used.