Ccna certification Practice Tests

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 14.  B.  The top line in the exhibit is the summarization of all three routes below. This is also 

called a supernet, since it is the opposite of a subnet and groups networks together rather 

than dividing them. It groups the networks that are independently routable into one 

statement, summarizing them. The 10.0.0.0/8 is not a route in the routing table; the routes 

are grouped under this summarization. The 10.0.0.0/8 is a network address and therefore 

cannot be the router’s network address. The 10.0.0.0/8 is not populated from another 

router directly; it is summarized from the routes learned from other routers.

 15.  C.  The number represents the time the route had been in the routing table and signifies 

when the route had last been updated. This route is populated via a dynamic routing 

protocol; when the protocol updates the route, it will be reset to zero. The time 

represented in this exhibit is not the current time. The delay is not represented in the form 

of time; it is normally a component of the metric. The route statement will not display the 

amount of time an interface or route has been up.

 16.  C.  When routers select the next hop, the rule of most specific first is always used. 

Since there are three routes to 192.168.4.0/24 (including the gateway of last resort), the 

most specific of 192.168.4.0/24 via Serial 0/0/1 is selected. The interface Serial 0/2/0 

would only be right if the destination address was not in the other route statements. 

The IP address of 192.168.4.2 would only be right if the destination address was in 

the 192.168.5.0/24 network. The IP address of 198.22.34.3 would only be right if the 

destination address was in the 192.168.0.0/16 network and no other specific routes 

existed.

 17.  D.  Nothing needs to be done since the IP address of 198.44.4.5/24 is configured on 

Fa0/1. This shows that the network of 198.44.4.0/24 is connected to Fa0/1. Configuring 

the command 

ip route 198.44.4.0 255.255.255.0 198.44.4.5 would not achieve 

anything because the network is configured on the interface already. Configuring the 

command 

ip route 198.44.4.0 255.255.255.0 fast 0/1 would not achieve anything 

because the interface already belongs to the network of 192.168.4.0/24. The command 

of 

ip route 198.44.4.0/24 fast 0/1 is normally not a valid command because the 

network mask is expressed in dotted-decimal form.

 18.  B.  The network of 205.34.54.85/29 is written out as 205.34.54.85 255.255.255.248. 

The next hop is 205.34.55.2, so the command would be 

ip route 205.34.54.85 

255.255.255.248 205.34.55.2. The command ip route 205.34.54.85/24 

205.34.55.2 is invalid because it is not normally entered with a CIDR notation. The 

command 

ip route 205.34.54.85 255.255.255.240 205.34.55.2 is invalid because 

the network mask is wrong when written out in dotted-decimal format. The command  

ip route 205.34.55.2 255.255.255.248 205.34.54.85 is invalid because the next 

hop and the network are in the wrong place on the command.

 19.  A.  Static routes are highly trusted routes, since an administrator created them. Therefore, 

they have the lowest administrative distance (AD) with a number of 1. The administrative 

of 0 is used for connected interfaces. The administrative distance of 2 is a wrong answer 

and does not map to a route source. The administrative distance of 255 is reserved for 

unknown sources and is entered into the route process.

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