New CCNA – OSPF Questions
Note: If you are not sure about OSPF, please read our OSPF Tutorial.
Question 1
Which characteristics are representative of a link-state routing protocol? (Choose three)
A. provides common view of entire topology
B. exchanges routing tables with neighbors
C. calculates shortest path
D. utilizes event-triggered updates
E. utilizes frequent periodic updates
Answer: A C D
Question 2
Which statements describe the routing protocol OSPF? (Choose three)
A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates
F. It is simpler to configure than RIPv2.
Answer: A C E
Explanation
Answer A and C are obviously correct. For answer E, it allows extensive control of routing updates via Link-State Advertisement (LSA). Administrators can filter these LSAs to meet their requirements easily.
Question 3
A network administrator is trying to add a new router into an established OSPF network. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. Given the information in the partial configuration shown below, what configuration error is causing this problem?
| Router(config)# router ospf 1 Router(config-router)# network 10.0.0.0 255.0.0.0 area 0 |
A. The process id is configured improperly.
B. The OSPF area is configured improperly.
C. The network wildcard mask is configured improperly.
D. The network number is configured improperly.
E. The AS is configured improperly.
F. The network subnet mask is configured improperly.
Answer: C
Question 4
A network associate has configured OSPF with the command:
City(config-router)# network 192.168.12.64 0.0.0.63 area 0
After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF.
Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three)
A. FastEthernet0/0
B. FastEthernet0/1
C. Serial0/0
D. Serial0/1.102
E. Serial0/1.103
F. Serial0/1.104
Answer: B C D
Explanation
The “network 192.168.12.64 0.0.0.63″ equals to network 192.168.12.64/26. This network has:
+ Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)
+ Network address: 192.168.12.64
+ Broadcast address: 192.168.12.127
Therefore all interface in the range of this network will join OSPF -> B C D are correct.
Question 5
What is the default maximum number of equal-cost paths that can be placed into the routing of a Cisco OSPF router?
A. 16
B. 2
C. unlimited
D. 4
Answer: D
Explanation
The default number of equal-cost paths that can be placed into the routing of a Cisco OSPF router is 4. We can change this default value by using “maximum-paths” command:
Router(config-router)#maximum-paths 2
Note: Cisco routers support up to 6 equal-cost paths
Question 6
Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two)
Router(config)# router ospf 1
A. All OSPF routers in an area must have the same process ID.
B. Only one process number can be used on the same router.
C. Different process identifiers can be used to run multiple OSPF processes
D. The process number can be any number from 1 to 65,535.
E. Hello packets are sent to each neighbor to determine the processor identifier.
Answer: C D
Question 7
Why do large OSPF networks use a hierarchical design? (Choose three)
A. to confine network instability to single areas of the network.
B. to reduce the complexity of router configuration
C. to speed up convergence
D. to lower costs by replacing routers with distribution layer switches
E. to decrease latency by increasing bandwidth
F. to reduce routing overhead
Answer: A C F
Explanation
Hierarchical design of OSPF (basically means that you can separate the larger internetwork into smaller internetworks called areas) helps us create a network with all features listed above (decrease routing overhead, speed up convergence, confine network instability to single areas of the network).
Question 8
Which commands are required to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0? (choose two)
A. Router(config)#router ospf 1
B. Router(config)#router ospf 0
C. Router(config)#router ospf area 0
D. Router(config-router)#network 192.168.16.0 0.0.0.255 area 0
E. Router(config-router)#network 192.168.16.0 0.0.0.255 0
F. Router(config-router)#network 192.168.16.0 255.255.255.0 area 0
Answer: A D
Explanation
In the router ospf command, the ranges from 1 to 65535 so o is an invalid number -> A is correct but B is not correct.
Question 9
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 RouterD?
RouterD# show ip interface brief
A. 10.1.1.2
B. 10.154.154.1
C. 172.16.5.1
D. 192.168.5.316
Answer: C
Explanation
The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID.
Question 10
What is the default administrative distance of OSPF?
A. 120
B. 100
C. 90
D. 110
Answer: D
@ Amro……
OSPF= Open Shortest Path First
In Q2 someone can explain me why D can’t be one of the correct answer?
D. It increases routing overhead on the network.
OSPF don’t have routing overhead due to lsa traffic?
alex that y d is not the answer of the question ;)
Great Work, all questions in the exam
alex because ospf decreases router overhead through areas. All info is confined to a single area thus decreasing not increasing overhead.
Clear CCNA with 1000 score
Question 5, 6 , 7
There was a new OSPF question was asking which comment will add all interface to ospf .network 0.0.0.0 255.255.255.255 area 0
Please send OSPF Dump to pbinaxas@gmail.com. Thanks
q2 ws in today exam
hye friends i have latest dumps exam no 200-120 i download by actual test.com if any one interested its cost 1000 rupee only.my gmail i.d sabeehhaider14@gmail.com
Which characteristics are representative of a link-state routing protocol? (Choose three)
A. provides common view of entire topology
B. exchanges routing tables with neighbors
C. calculates shortest path
D. utilizes event-triggered updates
E. utilizes frequent periodic updates
I would go with ADE…
I know OSPF uses SPF, but OSPF also sends the entire routing table every 30 min… Which it’s a frequent periodic update. If you watch the CCENT CBT Nuggets of Jeremy he tells you that…
q8, q9 today
i passed ccna exam recently,the lab was Acl1,Acl2 and Eigrp
there was this new question:
Question 4
Network admin creates a layer 3 Etherchannel, bounding 4 interfaces into channel group 1. On what interface is the IP address configured?
A. the port-channel 1 interface
B. the highest number member interface
C. all member interfaces
D. the lowest number member interface
Answer: A
good luck
958 today
another loopbacks in q9 1.1.1.1 and 2.2.2.2 two acl labs and eigrp 2
OSPF is classless routing protocol that interfaces directly to IP as protocol 89. OSPF uses the concept of multicast hellos and dead timers to discover and maintain neighbors. Routing updates for OSPF are called link-state advertisements (LSAs). The topology table for OSPF commonly is referred to as the link-state database. OSPF floods areas with LSAs until every router in the domain has a consistent image of the network, called the link-state database. When every router has the same image of the network, the SPF algorithm, or the Dijkstra algorithm, is run on the database, and a loop-free graph describing the shortest-cost path to each destination in the network is created. This is called the SPF tree. The OSPF routes in the route table or forwarding table are derived from the SPF tree. Because each router has an identical copy of the entire SPF tree, rapid convergence is possible. OSPF uses an arbitrary metric of cost when determining the shortest path to a destination.
Let’s take a look at the major steps that OSPF goes through in building a route table, followed by a detailed examination of those steps. It is important to understand how OSPF operates over the different types of links and what type of LSAs propagates from one area to another. These details can be important when configuring OSPF over different media types:
MORE DETAILS>>
http://www.learncisco.net
use specific route at the end of question not permit ip any any
i gave it today 986
two new question
if you have any doubt on ccna exam
contact me on Skype : ajaygilly1
could you please share those 2 new questions….
i need dump ple send me fmriyas@gmail.com
If routers in different areas cant be neighbors dan how dey will exchange routing information
Hi,
Routers in different Area can be neighbours…..these are called Type-3 LSA…which is in depth in CCNP .
Thanks Raghu
hi i passed ccna exam today 16/12/2014 i got 917/1000 refer only watson and 9tut for passing THANKS 9TUT!
@Pradnesh…Would you like to share .what simulation you got..? i have exam today
Q3 today my exam!
there are eigrp simulation same as it is only eigrp was 22 i’ve to make it 2 and access list of host 3 access web finance only ip was change and theory was as it is of watson and 9tut.
i had a new question in my exam about de process of ospf neighborship…i dont remember it very well, but the Q and answer is like this:
Q: how is the proccess of OSPF adjacencies? (or something like that)
Answer: Exstart – Exchange – Loading – Full state…
i passed with 1000 :D
in Q #7 why option F z correct as OSPF does not have routing overheads coz LSA’s….
can someone explain it????
I m using packet tracer in tat i m getting only two slots on router how to add more slots
Q5 Q6 on the exam on 7-1-15
@priyanka : first : you should select ‘physical’. 2ndy : you should turn off your router and then add what module you want to add. After finishing , turn your router ‘on’ again ;)
my name is hamesh and i want to give CCNA exem i need letest dumps so please help me my email ID is hamishgul@yahoo.com
Hi, about OSPF you can find some good shapes in this blog. Enjoy ;) http://ipcisco.com/konular/routing/ospf/
Q1 & 10 in my exam today, passed
DATE: JAN 22 2015 ++ 1000/1000 COMPOSITE TEST ++
**** OSPFV3 QUESTION – What are 2 differences when comparing OSPFV3 and OSPFV2 ?
1. OSPFv3 is advertised on per-interface basis rather than networks.
2. OSPFv3 facilitates ipv6.
**ALL OTHER QUESTIONS FROM 9TUT** THANKs
Hi associates i will be taking the 200-120 exam this Friday kindly help me with the most recent dumps PDF please .
9tut enough to study ccna plz help?
yes 9tut is enough. I just cleard CCNA with 1000/1000 score. all in 9tut. one new question in OSPF
OSPFV3 QUESTION – What are 2 differences when comparing OSPFV3 and OSPFV2 ?
1. OSPFv3 is advertised on per-interface basis rather than networks.
2. OSPFv3 facilitates ipv6.
Alex, “D” cannot be the correct answer because OSPF create DR and the BDR which reduces loops inthe network or overhead ( if all routers are allow to send and receive update then there will be loops everywhere in the network causing overheads.therefore only the DR send updates to the rest of the routers in OSPF routers
Q1, Q9, Q10 On 15th Feb.
Auuu.. lolita
Please anyone who can help me SPNGN2 CCNA Service Provider . Please help me ! Write me please to digital_score@yahoo.com
I pass the exam tody.. all questions are from here. thx
@Muhe its not 30 min..its 30 seconds..
am i right??? ;)
Passed my CCNA exam today (18th Mar)… Q1, Q3 and Q9 in exam
i am not sure the answer is 4 , i have read 6?
Q5
Q6,8,10
@subodh & @Muhe
Jeremy is very good and I think you didn’t heard him clearly… It’s only a “HELLO” message to see if the neighbour/adjacent routers are still online/working or not, not the full routing table updates. Study well and good luck to all :)
I have just started looking at these questions for CCNA test prep, what are “dumps “that people are talking about?
Plz help me wit latest dumps and VCE too for CCNA . My exam on 8 next month. send me via email: acvidoca@ymail.com
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