CCNA 2 Chapter 7 v5.0 answers
1 Which two statements are true regarding classless routing protocols? (Choose two.)
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology
is supported by RIP version 1
sends subnet mask information in routing updates
sends complete routing table update to all neighbors
reduces the amount of address space available in an organization
2
Refer to the exhibit. OSPF is used in the network. Which path will be chosen by OSPF to send data packets from Net A to Net B?
R1, R4, R6, R7
R1, R3, R6, R7
R1, R3, R5, R6, R7
R1, R2, R5, R7
R1, R3, R5, R7
3
Refer to the exhibit. Based on the partial output from the show ip route command, what two facts can be determined about the RIP routing protocol? (Choose two.)
RIP version 1 is running on this router and its RIP neighbor.
RIP version 2 is running on this router and its RIP neighbor.
The command no auto-summary has been used on the RIP neighbor router.
RIP will advertise two networks to its neighbor.
The metric to the network 172.16.0.0 is 120.
4
Which two statements describe the OSPF routing protocol? (Choose two.)
automatically summarizes networks at the classful boundaries
used primarily as an EGP
uses Dijkstra’s algorithm to build the SPF tree
has an administrative distance of 100
calculates its metric using bandwidth
5 What is the purpose of the passive-interface command?
allows a router to send routing updates on an interface but not receive updates via that innterface
allows interfaces to share IP addresses
allows a router to receive routing updates on an interface but not send updates via that interface
allows an interface to remain up without receiving keepalives
allows a routing protocol to forward updates out an interface that is missing its IP address
6 In the context of routing protocols, what is a definition for time to convergence?
a measure of protocol configuration complexity
the capability to transport data, video, and voice over the same media
the amount of time for the routing tables to achieve a consistent state after a topology change
the amount of time a network administrator needs to configure a routing protocol in a small- to medium-sized network
7 Which two events will trigger the sending of a link-state packet by a link-state routing protocol? (Choose two.)
the requirement to periodically flood link-state packets to all neighbors
a change in the topology
the initial startup of the routing protocol process
the router update timer expiring
a link to a neighbor router has become congested
8 Fill in the blank. Do not abbreviate the answer.
The command version 2 is used in RIP router configuration mode to enable the sending of subnet masks with the routing updates.
9 What two actions result from entering the network 192.168.1.0 command in RIP configuration mode on a router? (Choose two.)
The routing table is created in the RAM of the router.
The RIP process is stopped and all existing RIP configurations are erased.
The neighboring routers are sent a request for routing updates.
Routing updates are sent through all the interfaces belonging to 192.168.1.0.
The network address 192.168.1.0 is advertised to the neighbor routers.
10 What two tasks do dynamic routing protocols perform? (Choose two.)
network discovery
discover hosts
propagate host default gateways
assign IP addressing
update and maintain routing tables
12
13
Refer to the exhibit. Which interface will be the exit interface to forward a data packet with the destination IP address 172.16.0.66?
Serial0/0/0
Serial0/0/1
GigabitEthernet0/0
GigabitEthernet0/1
14 Which route is the best match for a packet entering a router with a destination address of 10.16.0.2?
S 10.0.0.0/16 is directly connected, Ethernet 0/0
S 10.16.0.0/16 is directly connected, Ethernet 0/1
S 10.16.0.0/24 [1/0] via 192.168.0.9
S 10.0.0.0/8 [1/0] via 192.168.0.2
15
16 Fill in the blank. Do not abbreviate.
When configuring RIPng, the default-information originate command instructs the router to propagate a static default route.
17 What is different between IPv6 routing table entries compared to IPv4 routing table entries?
IPv6 does not use static routes to populate the routing table as used in IPv4.
The selection of IPv6 routes is based on the shortest matching prefix, unlike IPv4 route selection which is based on the longest matching prefix.
IPv6 routing tables include local route entries which IPv4 routing tables do not.
By design IPv6 is classless so all routes are effectively level 1 ultimate routes.
18 Which two requirements are necessary before a router configured with a link-state routing protocol can build and send its link-state packets? (Choose two.)
The router has constructed an SPF tree.
The router has built its link-state database.
The router has established its adjacencies.
The router has determined the costs associated with its active links.
The routing table has been refreshed.
19 Which dynamic routing protocol was developed as an exterior gateway protocol to interconnect different Internet providers?
OSPF
EIGRP
RIP
BGP
20 Which two requirements are used to determine if a route can be considered as an ultimate route in a router’s routing table? (Choose two.)
contain subnets
contain a next-hop IP address
contain an exit interface
be a default route
be a classful network entry
21 A destination route in the routing table is indicated with a code D. Which kind of route entry is this?
a route dynamically learned through the EIGRP routing protocol
a network directly connected to a router interface
a route used as the default gateway
a static route
22 Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?
a level 1 ultimate route
a level 2 supernet route
a level 1 parent route
a level 1 child route
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology
is supported by RIP version 1
sends subnet mask information in routing updates
sends complete routing table update to all neighbors
reduces the amount of address space available in an organization
2
Refer to the exhibit. OSPF is used in the network. Which path will be chosen by OSPF to send data packets from Net A to Net B?
R1, R4, R6, R7
R1, R3, R6, R7
R1, R3, R5, R6, R7
R1, R2, R5, R7
R1, R3, R5, R7
3
Refer to the exhibit. Based on the partial output from the show ip route command, what two facts can be determined about the RIP routing protocol? (Choose two.)
RIP version 1 is running on this router and its RIP neighbor.
RIP version 2 is running on this router and its RIP neighbor.
The command no auto-summary has been used on the RIP neighbor router.
RIP will advertise two networks to its neighbor.
The metric to the network 172.16.0.0 is 120.
4
Which two statements describe the OSPF routing protocol? (Choose two.)
automatically summarizes networks at the classful boundaries
used primarily as an EGP
uses Dijkstra’s algorithm to build the SPF tree
has an administrative distance of 100
calculates its metric using bandwidth
5 What is the purpose of the passive-interface command?
allows a router to send routing updates on an interface but not receive updates via that innterface
allows interfaces to share IP addresses
allows a router to receive routing updates on an interface but not send updates via that interface
allows an interface to remain up without receiving keepalives
allows a routing protocol to forward updates out an interface that is missing its IP address
6 In the context of routing protocols, what is a definition for time to convergence?
a measure of protocol configuration complexity
the capability to transport data, video, and voice over the same media
the amount of time for the routing tables to achieve a consistent state after a topology change
the amount of time a network administrator needs to configure a routing protocol in a small- to medium-sized network
7 Which two events will trigger the sending of a link-state packet by a link-state routing protocol? (Choose two.)
the requirement to periodically flood link-state packets to all neighbors
a change in the topology
the initial startup of the routing protocol process
the router update timer expiring
a link to a neighbor router has become congested
8 Fill in the blank. Do not abbreviate the answer.
The command version 2 is used in RIP router configuration mode to enable the sending of subnet masks with the routing updates.
9 What two actions result from entering the network 192.168.1.0 command in RIP configuration mode on a router? (Choose two.)
The routing table is created in the RAM of the router.
The RIP process is stopped and all existing RIP configurations are erased.
The neighboring routers are sent a request for routing updates.
Routing updates are sent through all the interfaces belonging to 192.168.1.0.
The network address 192.168.1.0 is advertised to the neighbor routers.
10 What two tasks do dynamic routing protocols perform? (Choose two.)
network discovery
discover hosts
propagate host default gateways
assign IP addressing
update and maintain routing tables
12
13
Refer to the exhibit. Which interface will be the exit interface to forward a data packet with the destination IP address 172.16.0.66?
Serial0/0/0
Serial0/0/1
GigabitEthernet0/0
GigabitEthernet0/1
14 Which route is the best match for a packet entering a router with a destination address of 10.16.0.2?
S 10.0.0.0/16 is directly connected, Ethernet 0/0
S 10.16.0.0/16 is directly connected, Ethernet 0/1
S 10.16.0.0/24 [1/0] via 192.168.0.9
S 10.0.0.0/8 [1/0] via 192.168.0.2
15
16 Fill in the blank. Do not abbreviate.
When configuring RIPng, the default-information originate command instructs the router to propagate a static default route.
17 What is different between IPv6 routing table entries compared to IPv4 routing table entries?
IPv6 does not use static routes to populate the routing table as used in IPv4.
The selection of IPv6 routes is based on the shortest matching prefix, unlike IPv4 route selection which is based on the longest matching prefix.
IPv6 routing tables include local route entries which IPv4 routing tables do not.
By design IPv6 is classless so all routes are effectively level 1 ultimate routes.
18 Which two requirements are necessary before a router configured with a link-state routing protocol can build and send its link-state packets? (Choose two.)
The router has constructed an SPF tree.
The router has built its link-state database.
The router has established its adjacencies.
The router has determined the costs associated with its active links.
The routing table has been refreshed.
19 Which dynamic routing protocol was developed as an exterior gateway protocol to interconnect different Internet providers?
OSPF
EIGRP
RIP
BGP
20 Which two requirements are used to determine if a route can be considered as an ultimate route in a router’s routing table? (Choose two.)
contain subnets
contain a next-hop IP address
contain an exit interface
be a default route
be a classful network entry
21 A destination route in the routing table is indicated with a code D. Which kind of route entry is this?
a route dynamically learned through the EIGRP routing protocol
a network directly connected to a router interface
a route used as the default gateway
a static route
22 Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?
a level 1 ultimate route
a level 2 supernet route
a level 1 parent route
a level 1 child route
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