RSE Chapter 2

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

default route

Consider the following command:ip route 192.168.10.0 255.255.255.0 10.10.10.2 5How would an administrator test this configuration? Delete the default gateway route on the router. Ping any valid address on the 192.168.10.0/24 network. Manually shut down the router interface used as a primary route. 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. A floating static is a backup route that only appears in the routing table when the interface used with the primary route is down. To test a floating static route, the route must be in the routing table. Therefore, shutting down the interface used as a primary route would allow the floating static route to appear in the routing table.

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 is removed from the routing table. The router polls neighbors for a replacement route. The static route remains in the table because it was defined as static. The router automatically redirects the static route to use another interface.

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 When the interface associated with a static route goes down, the router will remove the route because it is no longer valid.

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Why are the pings from PC0 to Server0 not successful? The static route to network 192.168.1.0 is misconfigured on Router1. The static route to network 192.168.1.0 is misconfigured on Router2.​ The static route to network 192.168.2.0 is misconfigured on Router1.​ The static route to network 192.168.2.0 is misconfigured on Router2.​

The static route to network 192.168.2.0 is misconfigured on Router1.​ Static routes should specify either a local interface or a next-hop IP address.

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 network 10.0.0.0 255.0.0.0 172.16.40.2 A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2 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 s0/0/0 A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2 A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2 The two required commands are A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2 and A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2.

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 192.168.4.0 255.255.255.0 192.168.5.2 A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2 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 192.168.3.2 255.255.255.0 192.168.4.0

A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2 The destination network on LAN C is 192.168.4.0 and the next-hop address from the perspective of router A is 192.168.3.2.

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 0.0.0.0 198.133.219.5 Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.6 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 s0/0/0

Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1 The default route configured with the next-hop option requires a recursive lookup.

Refer to the exhibit. What routing solution will allow both PC A and PC B to access the Internet with the minimum amount of router CPU and network bandwidth utilization? Configure a static route from R1 to Edge and a dynamic route from Edge to R1. Configure a static default route from R1 to Edge, a default route from Edge to the Internet, and a static route from Edge to R1. Configure a dynamic route from R1 to Edge and a static route from Edge to R1. Configure a dynamic routing protocol between R1 and Edge and advertise all routes.

Configure a static default route from R1 to Edge, a default route from Edge to the Internet, and a static route from Edge to R1. Two routes have to be created: a default route in R1 to reach Edge and a static route in Edge to reach R1 for the return traffic. This is a best solution once PC A and PC B belong to stub networks. Moreover, static routing consumes less bandwidth than dynamic routing.

What is a characteristic of a static route that matches all packets? It backs up a route already discovered by a dynamic routing protocol. It uses a single network address to send multiple static routes to one destination address. It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route. It is configured with a higher administrative distance than the original dynamic routing protocol has.

It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route. A default static route is a route that matches all packets. It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route. A default static route is simply a static route with 0.0.0.0/0 as the destination IPv4 address. Configuring a default static route creates a gateway of last resort.

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 G0/0 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 G0/1 fe80::2

R1(config)# ipv6 route ::/0 G0/1 fe80::2 To route packets to unknown IPv6 networks a router will need an IPv6 default route. The static route ipv6 route ::/0 G0/1 fe80::2 will match all networks and send packets out the specified exit interface G0/1 toward R2.

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

S 172.16.1.0 [1/0] via 172.16.2.2

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 ::/0 serial0/0/0 ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::1 ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2 ipv6 route 2001:db8:1::/65 2001:db8:1:3::1

ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2 To configure an IPv6 static route, use the ipv6 route command followed by the destination network. Then add either the IP address of the adjacent router or the interface R1 will use to transmit a packet to the 2001:db8:1:4::/64 network.

Refer to the exhibit. The routing table for R2 is as follows:Gateway of last resort is not set10.0.0.0/30 is subnetted, 2 subnetsC 10.0.0.0 is directly connected, Serial0/0/0C 10.0.0.4 is directly connected, Serial0/0/1192.168.10.0/26 is subnetted, 3 subnetsS 192.168.10.0 is directly connected, Serial0/0/0C 192.168.10.64 is directly connected, FastEthernet0/0S 192.168.10.128 [1/0] via 10.0.0.6What will router R2 do with a packet destined for 192.168.10.129? drop the packet send the packet out interface Serial0/0/0 send the packet out interface Serial0/0/1 send the packet out interface FastEthernet0/0

send the packet out interface Serial0/0/1 When a static route is configured with the next hop address (as in the case of the 192.168.10.128 network), the output of the show ip route command lists the route as "via" a particular IP address. The router has to look up that IP address to determine which interface to send the packet out. Because the IP address of 10.0.0.6 is part of network 10.0.0.4, the router sends the packet out interface Serial0/0/1.

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

show ip interface brief show ip route ping The ping, show ip route, and show ip interface brief commands provide information to help troubleshoot static routes. Show version does not provide any routing information. The tracert command is used at the Windows command prompt and is not an IOS command. The show arp command displays learned IP address to MAC address mappings contained in the Address Resolution Protocol (ARP) table.

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

the IP address of the next-hop neighbor the interface ID exit interface A fully specified static route can be used to avoid recursive routing table lookups by the router. A fully specified static route contains both the IP address of the next-hop router and the ID of the exit interface.

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

to be used as a backup route By default, dynamic routing protocols have a higher administrative distance than static routes. Configuring a static route with a higher administrative distance than that of the dynamic routing protocol will result in the dynamic route being used instead of the static route. However, should the dynamically learned route fail, then the static route will be used as a backup.