Font size
Worksheetscit157 finals q2
Total questions: 21
Worksheet time: 9mins
What is used to facilitate hierarchical routing in OSPF?
frequent SPF calculations
autosummarization
the election of designated routers
the use of multiple areas
What are two reasons for creating an OSPF network with multiple areas? Select two.
to simplify configuration
to reduce SPF calculations
to reduce use of memory and processor resources
to provide areas in the network for routers that are not running OSPF
to ensure that an area is used to connect the network to the Internet
What is indicated by the O IA in the routing table?
The route was manually configured.
The route was learned from outside the internetwork
The route was learned from within the area
The route was learned from another area.
Which is/are the building blocks of OSPF protocol?
Link State Advertisements
Link State Updates
Designated Router
Hello Packets
In multi area OSPF, area 0 is also called as __________
regular area
backbone area
stub area
non backbone area
It is a router that has all of its interfaces in the same area.
Area Border Router
Internal Router
Backbone Router
Autonomous System Border Router
What type of LSAs are originated by the ASBR and are flooded to the entire autonomous system.
2
5
3
4
What are reasons for creating OSPF in a hierarchical design? Select three
Smaller routing tables
To confine network instability to single areas of the network
Reduced link-state update overhead
Increase frequency of SPF calculations
Produce high CPU overhead
Select the TERMS used to identify routers within multi-area OSPF. Select Three
ABR
ASBR
DR
BDR
BACKBONE
ABR generate LSA type ____ to identify an ASBR and provide a route to it.
1
2
3
4
Which two of the following commands will place network 10.2.3.0/24 into area 0?
- router eigrp 10
- router ospf 10
- network 10.0.0.0
- network 10.2.3.0 0.0.0.255 area0
- network 10.2.3.0 0.0.0.255 area 0
1 and 4
2, 4, and 5
2 and 5
3 and 4
If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?
The lowest IP address of any physical interface
The highest IP address of any physical interface
The lowest IP address of any logical interface
The highest IP address of any logical interface
ICTD called you up and tells that the router did not worked properly. The following commands entered are:
Router(config)#router ospf 1
Router(config-router)#network 10.0.0.0 255.0.0.0 area 0
They still can't see any routes in the routing table. What configuration error did the administrator make?
The wildcard mask is incorrect.
The OSPF area is wrong.
The OSPF Process ID is incorrect.
The AS configuration is wrong.
How does OSPF determine whether other link-state information are operating on the interfaces as well?
By sending Hello packets.
By sending DBD packets
By receiving LSDB
By sending LSAs
What command can you use to assign an interface to OSPF Area 2? [shown is the syntax]
ip area 2 ospf <id>
ip ospf <id> area 2
area 2
network <n/w id> <w.c.m> area 2
Both OSPFv2 and OSPFv3 can run on the same router. True or false?
True
False
Which is the equivalent of 224.0.0.5 in the IPv6 world?
FF02::5
FF00::5
FF::5
FFFF::05
Which command would you use to enable the OSPFv3 routing protocol?
ipv6 router ospf <id>
router ospf <id> v3
router ospf <id> ipv6
ospf v3 enable
Select the command that will a network engineer issue to verify the configured hello and dead timer intervals on a point-to-point WAN link between two routers that are running OSPFv2?
show ip ospf neighbor
show ip ospf interface serial 0/0/0
show ipv6 ospf interface serial 0/0/0
show ip ospf interface fastethernet 0/1
Refer to the exhibit. Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this Router D?
192.168.5.316
10.1.1.2
10.154.154.1
172.16.5.1
What is the wilcard mask of 255.255.255.240?
0.0.0.3
0.0.0.15
0.0.0.63
0.0.0.255
