CCNA 2 - Module 8
Refer to the exhibit. What can be determined from this output?
All of the routes listed are network routes.
Refer to the exhibit. A packet destined for host 128.107.0.5/16 is processed by the JAX router. After finding the static route in the routing table that matches the destination network for this packet, what does the router do next?
performs a recursive lookup to find the exit interface used to forward the packet
Refer to the exhibit. What parent network will automatically be included in the routing table when the three subnets are configured on Router1?
172.16.0.0/16
The following entry is displayed in the routing table:
R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:26, Serial0/0/1
What type of route is this?
a level 1 ultimate network route
Refer to the exhibit. Router1 is running IOS version 12.2. What will the network administrator need to do so that packets for unknown child routes of 172.16.0.0/24 will not be dropped?
do nothing, ip classless is on by default
Refer to the exhibit. Router B receives a packet with a destination address of 10.16.1.97. What will router B do?
use the default route
Refer to the exhibit. How many routes in this output qualify for use as ultimate routes?
7
Refer to the exhibit. With the ip classless command issued, what will router R2 do with a packet destined for host 172.16.4.234?
send packet out Serial 0/0/1
Refer to the exhibit. Which statement correctly describes this network?
There is at least one parent and one child route
Refer to the exhibit. Router1 has been issued the ip classless command. What happens to packets destined to host 172.16.3.10?
forward out interface Serial0/0/1
Refer to the exhibit. The network administrator has discovered that packets destined for servers on the 172.16.254.0 network are being dropped by Router2. What command should the administrator issue to ensure that these packets are sent out the gateway of last resort, Serial 0/0/1?
ip classless
A router has the following entries in its routing table:
S 192.168.0.0/24 [1/0] via 192.168.128.2
O 192.168.0.0/25 [110/2175] via 172.16.1.1, 00:02:15, FastEthernet0/1
D 192.168.0.0/25 [90/22455] via 172.16.2.2, 00:12:15, Serial0/0/0
R 192.168.0.0/26 [120/2] via 172.16.3.3, 00:00:15, Serial0/0/1
The router receives a packet that is destined for a host with the address 192.168.0.58. Which route would this router use to forward the packet?
the RIP route
What determines if the router implements a classless route lookup process?
Multiple routes with different masks to the same destination are in the routing table.
What occurs when no ip classless is implemented on the router?
The router will assume it has knowledge of all subnets in the network and will not search beyond child routes for a better match.
Refer to the exhibit. The graphic contains partial contents of the routing table on router E. Router E is running version 12.3 of the IOS and is configured for default routing behavior. Router E receives a packet to forward. Which route in the routing table will be searched
first and why?
172.16.0.0/25 because it is the first level 1 route
A network is converged and the routing tables are complete. When a packet needs to be forwarded, what is the first criterion used to determine the best path in the routing table?
the route with the longest address and mask match to the destination
Refer to the exhibit. What subnet mask will Router1 apply to child routes of the 172.16.0.0/24 network?
255.255.255.0
Refer to the exhibit. What protocol was used to distribute the routing information for the network 172.16.1.4?
RIPv2
A route to a destination network is learned from multiple routing protocols. What is used by a Cisco router to select the preferred route to the destination that will be installed in the routing table?
administrative distance
2 comments:
Answers of the question
"What determines if the router implements a classless route lookup process?" are old.
The new answers are:
- Child routes are present in the routing table.
- The command ip classless is enabled on the router.
- A classless routing protocol has been configured on the router.
- Routing table entries have a next-hop IP address and an exit interface for each child route.
But I don't know what's right.
Ok. "Child routes are present in the routing table." is definitely wrong.
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