CCNA – IP Routing Questions 2
Here you will find answers to IP Routing Questions – Part 2
Question 1
Refer to the exhibit. Host A is to send data to Host B. How will Router1 handle the data frame received from Host A? (Choose three)
A. Router1 will strip off the source MAC address and replace it with the MAC address on the forwarding FastEthernet interface.
B. Router1 will strip off the source IP address and replace it with the IP address on the forwarding FastEthernet interface.
C. Router1 will strip off the destination MAC address and replace it with the MAC address of Host B.
D. Router1 will strip off the destination IP address and replace it with the IP address of Host B.
E. Router1 will forward the data frame out interface FastEthernet0/1.
F. Router1 will forward the data frame out interface FastEthernet0/2.
Answer: A C F
Explanation
While transferring data through many different networks, the source and destination IP addresses are not changed. Only the source and destination MAC addresses are changed. So in this case, Host A will use the IP address of Host B and the MAC address of Fa0/0 interface to send data. When the router receives this data, it replaces the source MAC address with it own Fa0/2 interface’s MAC address and replaces the destination MAC address with Host B’s MAC address before sending to Host B -> A, C and F are correct.
Question 2
What is an appropriate use of a default route?
A. to provide routing to a local web server
B. to provide routing from an ISP to a stub network
C. to provide routing that will override the configured dynamic routing protocol
D. to provide routing to a destination that is not specified in the routing table and which is outside the local network
Answer: D
Explanation
Default routes are used to direct packets addressed to networks not explicitly listed in the routing table. An example of default route is:
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.1
(Notice that the network address of default route is 0.0.0.0 0.0.0.0)
Question 3
A medium-sized company has a Class C IP address. It has two Cisco routers and one non-Cisco router.
All three routers are using RIP version 1.
The company network is using the block of 198.133.219.0/24.
The company has decided it would be a good idea to split the network into three smaller subnets and create the option of conserving addresses with VLSM.
What is the best course of action if the company wants to have 40 hosts in each of the three subnets?
A. Convert all the routers to EIGRP and use 198.133.219.32/27, 198.133.219.64/27, and 198.133.219.92/27 as the new subnetworks.
B. Maintain the use of RIP version 1 and use 198.133.219.32/27, 198.133.219.64/27, and 198.133.219.92/27 as the new subnetworks.
C. Convert all the routers to EIGRP and use 198.133.219.64/26, 198.133.219.128/26, and 198.133.219.192/26 as the new subnetworks.
D. Convert all the routers to RIP version 2 and use 198.133.219.64/26, 198.133.219.128/26, and 198.133.219.192/26 as the new subnetworks.
E. Convert all the routers to OSPF and use 198.133.219.16/28, 198.133.219.32/28, and 198.133.219.48/28 as the new subnetworks.
F. Convert all the routers to static routes and use 198.133.219.16/28, 198.133.219.32/28, and 198.133.219.48/28 as the new subnetworks.
Answer: D
Explanation
RIP version 1 does not support VLSM so we have to convert into RIPv2, OSPF or EIGRP -> B is not correct.
But EIGRP is a Cisco-proprietary routing protocol so it can not be used in a non-Cisco router -> A and C are not correct.
To support 40 hosts per subnet we need a subnet mask of /26 or lower (which leaves 6 bits 0 and 26 = 64 > 40 hosts). Therefore a subnet mask of /28 is not suitable in this case -> E & F are not correct.
Question 4
Refer to the exhibit. Which command will created a default route on RouterB to reach all networks beyond RouterA?
A. ip route 0.0.0.0 0.0.0.0 192.168.2.2
B. ip route 192.168.1.0 255.255.255.0 192.168.2.1
C. ip route 192.168.1.0 255.255.255.0 s0/0/0
D. ip route 10:0.0.0 255.255.255.0 s0/0/0
E. ip route 0.0.0.0 255.255.255.0 192.168.2.2
Answer: A
Explanation
Notice that in the static (or default) route we need to specify the exit-interface (local on that router) or the next-hop IP address (of a directly connected router) -> A is correct.
Question 5
Refer to the exhibit. S0/0 on R1 is configured as a multipoint interface to communicate with R2 and R3 in the hub-and-spoke Frame Relay topology. While testing this configuration, a technician notes that pings are successfully from hosts on the 172.16.1.0/24 network to hosts on both the 172.16.2.0/25 and 172.16.0.2.128/25 networks. However, pings between hosts on the 172.16.2.0/25 and 172.16.2.128/25 network are not successful. What could explain this connectivity problem?
A. The ip subnet-zero command has been issued on the R1 router.
B. The RIPv2 dynamic routing protocol cannot be used across a Frame Relay network.
C. Split horizon is preventing R2 from learning about the R3 networks and R3 from learning about R2 networks.
D. The 172.16.2.0/25 and 172.16.2.128/25 networks are overlapping networks that can be seen by R1, but not between R2 and R3.
E. The 172.16.3.0/29 network used on the Frame Relay links is creating a discontiguous network between the R2 and R3 router subnetworks.
Answer: C
Explanation
The split horizon rule states “a router never sends information about a route back in same direction which is original information came”. In this case it means whenR3 sends update to R1 via s0/0, R1 does not send any update for same network out of interface s0/0. To solve this problem we can configure sub-interfaces on s0/0 or explicitly allow the update to be sent back on the same interface.
Question 6
S0/0 on R1 is configured as a multipoint interface to communicate with R2 and R3 in the hub-and-spoke Frame Relay topology shown in the exhibit. Originally, static routes were configured between these routers to successfully route traffic between the attached networks. What will need to be done in order to use RIPv2 in place of the static routes?
A. Configure the no ip subnet-zero command on R1, R2, and R3.
B. Dynamic routing protocols such as RIPv2 cannot be used across Frame Relay networks.
C. Configure the S0/0 interface on R1 as two subinterfaces and configure point-to-point links to R2 and R3.
D. Change the 172.16.2.0/25 and 172.16.2.128/25 subnetworks so that at least two bits are borrowed from the last octet.
E. Change the network address configuration to eliminate the discontiguous 172.16.2.0/25 and 172.16.2.128/25 subnetwork.
Answer: C
Explanation
Same as Question 5
Question 7
Refer to the exhibit. A network associate has configured the internetwork that is shown in the exhibit, but has failed to configure routing properly.
Which configuration will allow the hosts on the Branch LAN to access resources on the HQ LAN with the least impact on router processing and WAN bandwidth?
A.
HQ(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.5
Branch(config) # ip route 172.16.25.0 255.255.255.0 192.168.2.6
B.
HQ(config)# router rip
HQ(config-router)# network 192.168.2.0
HQ(config-router)# network 172.16.0.0
Branch(config)# router rip
Branch(config-router) # network 192.168.1.0
Branch(config-router)# network 192.168.2.0
C.
HQ(config)# router eigrp 56
HQ(config-router)# network 192.168.2.4
HQ(config-router)# network 172.16.25.0
Branch(config)# router eigrp 56
Branch(config-router)# network 192.168.1.0
Branch(config-router) # network 192.168.2.4
D.
HQ(config)# router ospf 1
HQ(config-router)# network 192.168.2.4 0.0.0.3 area 0
HQ(config-router)# network 172.16.25.0 0.0.0.255 area 0
Branch(config)# router ospf 1
Branch(config-router)# network 192.168.1.0 0.0.0.255 area 0
Answer: A
Explanation
By configuring static route, we can minimize the router processing and WAN bandwidth.
Question 8
Refer to the exhibit. The network administrator requires easy configuration options and minimal routing protocol traffic. Which two options provide adequate routing table information for traffic that passes between the two routers and satisfy the requests of the network administrator?(choose two)
A. a dynamic routing protocol on InternetRouter to advertise summarized routers to CentralRouter.
B. a dynamic routing protocol on CentralRouter to advertise summarized routers to InternetRouter.
C. a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.
D. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouer.
E. a dynamic routing protocol on CentralRouer to advertise all routes to InternetRouter
F. a static, default route on CentralRouter that directs traffic to InternetRouter.
Answer: C F
Question 9
A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network?
A. an OSPF update for network 192.168.0.0/16
B. a static router to network 192.168.10.0/24
C. a static router to network 192.168.10.0/24 with a local serial interface configured as the next hop
D. a RIP update for network 192.168.10.0/24
E. a directly connected interface with an address of 192.168.10.254/24
F. a default route with a next hop address of 192.168.10.1
Answer: E
Question 10
Which parameter can be tuned to affect the selection of a static route as a backup when a dynamic protocol is also being used?
A. link bandwidth
B. hop count
C. link cost
D. administrative distance
E. link delay
Answer: D
Question 11
Which statement is true, as relates to classful or classless routing?
A. RIPV1 and OSPF are classless routing protocols.
B. Classful routing protocols send the subnet mask in routing updates.
C. Automatic summarization at classful boundaries can cause problems on discontiguous networks.
D. EIGRP and OSPF are classful routing protocols and summarize routes by default.
Answer: C
Question 12
Which two are advantages of static routing when compared to dynamic routing? (choose two)
A. Security increases because only the network administrator may change the routing tables.
B. Configuration complexity decreases as network size increases.
C. Routing updates are automatically sent to neighbors.
D. Route summarization is computed automatically by the router.
E. Routing traffic load is reduced when used in stub network links.
F. An efficient algorithm is used to build routing tables using automatic updates.
G. Routing tables adapt automatically to topology changes.
Answer: A E
Question 13
The speed of all serial links is E1 and the speed of the all other links is 100Mb/s. A static route will be established on the Manchester router to direct traffic toward to the internet over the most direct path available. What configuration of the Manchester router will establish a route toward to the internet for traffic from workstation on the Manchester LAN?
A. ip route 0.0.0.0 255.255.255.0 172.16.100.2
B. ip route 0.0.0.0 255.255.255.252 128.107.1.1
C. ip route 0.0.0.0 0.0.0.0 128.107.1.1
D. ip route 0.0.0.00.0:0:0 172.16.100.1
E. ip route 0.0.0.0 255.255.255.255 172.16.100.2
F. ip route 0.0.0.0 0.0.0.0 172.16.100.2
Answer: F
Explanation
Maybe “the most direct path available” here means via R2 because it is directly connected with the Internet while the London path needs to go through R1. So we need a command to send traffic to R2 and the correct command is “ip route 0.0.0.0 0.0.0.0 172.16.100.2″.
Hi all, I am taking CCNA 640-802 exam first time on 30/05/2012. Could anyone please send me latest dumps which are valid for UK? My e-mail address is puneet_gill84@yahoo.co.uk. Many thanks.
need help with Q11
Answer C : Automatic summarization at classful boundaries can cause problems on discontiguous networks.
wht does above syntax actually means ???
@ Migdad
can you explain your question please ??I’m confused.
or anyone can explain?
Thank you.
I PASSED CCNA EXAM TODAY THANKS TO ALL MIGHTY ALLAH
960/1000
what are the dumps you have referred?
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priya
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Sorry, my email address is jlim1409@gmail.com
Thank you.
please explain this to me..how did they come up with the answers B and F..tnx..
Which of the ff ip address can be assigned to the host devices?
A. 205.7.8.32/27
B.191.168.10.2/23
C. 127.0.0.1
D.224.0.0.10
E. 203.123.45.47/28
F. 10.10.0/13
@khaye
A is incorrect because that’s the network address
B is correct, the IP is on the 191.168.10.0 ~ 191.168.11.255 subnet
C is false, this is a loopback IP and it can not be assigned to a host
D this is a class D IP address, it can not be assigned to hosts. only class A, B and C IPv4 addresses are assignable
E is incorrect, this is the broadcast address on the 203.123.45.32/28 subnet
F should be correct by process of elimination, i believe you’ve mistyped it
I passed my ccna exam today Praise be to God! Thank you Jesus! and thanks to 9TUT for the tutorials and explanations, great site and thanks to xallax for your explanations to questions and thanks to http://www.examcollection.com for the dumps. Pls guys lets donate and help to keep this site up!
48 ques for exams including 3 simulation, I had EIGRP, Acesslist2 and VTP . Make sure you practice the simulation, use packet tracer or gns3. Best wishes to all!
@God’s Grace: can you send me the link to the dumbs that help your success, I will be taking my own exams on first week of August. My mail add: unleashed76@gmail.com. Please do me this kind help, I have studied but still have some fear.
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@Chuka, do not fear, study this website 9TUT, practice the simulation with a packet tracer, which you can download for free, google it. Also , search on google for a free copy of Visual CertExam Suite, vce engine, this will enable you to download full copy to see the dumps.
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Configuring static routing, how can i get a ping to go through a diff. route depending which host pinged?
I want to ping host B from host A. Host A is connected to router1, which is connected to 2 other routers, router2 and router3. On the other end, routers 2 & 3 meet router4. Like a diamond topology. So basically routers 2 & 3 lead to the same place, router4, which is connected to host B. I need to configure static routing so that when I ping host B from A, both ping request and ping reply go through router1, 2, 4, host B, and back. THEN the part I dont understand, doing it the other way around: When I ping host A from host B, how can I get both ping request and ping reply to go through router4, THEN THROUGH ROUTER 3, then router1, then A, and back again to host B?
Using Cisco routers
http://s129.photobucket.com/albums/p239/itsshortforleo/?action=view¤t=Untitledcopy.jpg
Directly connected network is more reliable then any other, i mean all other type of routing protocol, that is answer of the Q.9
Hi everybody, I’m taking exam on the 2nd of Sept,Can someone send me the latest dump for Japan?My email address is sainyi63@yahoo.com
Thank you .
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Can you help me with this question:
A host is attempting to send data to another host on a different network. What is the first action
that the sending host will take?
A. Drop the data.
B. Send the data frames to the default gateway.
C. Create an ARP request to get a MAC address for the receiving host.
D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host
Actual Tests and testking say C is correct, but some others say B. What’s the correct?
@spyros
correct aswer is B.
the host is on a DIFFERENT network. that’s very important. there will be no ARP requests for destinations outside the sender’s network.
the frame get forwarded to the default gateway and it has to figure out how to get to the receiving end
Can somebody link me to CCNA latest dumps to tobitex4life@yahoo.com where i can download it for free, please.
Can somebody link me to CCNA latest dumps to tobitex4life@yahoo.com where i can download it for free, please. And i need your prayers for my success.
Hi 9tut
May i know that config <> , will also effect on configuration on the router with configuration as rip , ospf or eigrp ?
Question 2
TTL what is mean and how is work ? i so confuse . how get value( 255, 254, 253)i see some Q&A on forum
Hi 9tut
sorry typo error
May i know that config (Router on stick) , will also effect on configuration on the router with configuration as rip , ospf or eigrp ?
Question 2
TTL what is mean and how is work ? i so confuse . how get value( 255, 254, 253)i see some Q&A on forum
q5 Explanation: To solve this problem we can configure sub-interfaces on s0/0 or explicitly allow the update to be sent back on the same interface.
When would we use either solution. Does it matter what solution is used? Is it a matter of scaling?
q8
Out of interest.. how would traffic from the internet get routed into the network?
Are we to assume a static route exists externally pointing traffic to the network?
The question also says “minimal routing protocol traffic” which implies that some routing protocol traffic is acceptable to some degree.
Question 05 – the corect asewnr are B,C:It is enabled by default on all Cisco IOS implementations.****It assigns a value that represents an infinite metric to the poisoned route.****It sends back the poisoned route update to the same interface from where it was received.It instructs routers to hold all changes that might affect routes, for a specified period of time.It limits the number of hops a packet can traverse through the network before it is discarded.
@Sunday Question 5 is correct with the answer of C.
1. Ripv2 can be used on FR networks, so B is wrong.
2. Rip won’t send the updates because even with a /29; 172.16.3.1, 172.16.3.2, and 172.16.3.3 are on the same network so Split Horizon prevents sending up dates to what it thinks is the same network.
I will take my CCNA 640-802 exam on two days. I will let you all know how did it goes. Im ansious. My main question is if there will be switch or vlan configuration Sims? If anyone knows please let me know. Congrats to all of you :)
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Refer to the exhibit. According to the routing table, where will the router send a packet destined for 10.1.5.65?
Network Interface Next Hop
10.1.1.0/24 e0 DC
10.1.2.0 /24 e1 DC
10.1.3.0 /25 s0 DC
10.1.4.0 /24 s1 DC
10.1.5.0 /24 e0 10.1.1.2
10.1.5.64 /28 e1 10.1.2.2.
10.1.5.64 /29 s0 10.1.3.3
10.1.5.64 /27 s1 10.1.4.4
10.1.3.0
Can anyone help ..what should be the ans
wow congratulation to you MUHAMMAD RASHID could you give the clue of the exam?thanks
hi, latest dumps
hani_2012_rad@yahoo.com
in Q13, answer is F because if you look well
1) the path: manchester—london—R1—internet has 2 serial link E1 and one link at 100Mbps
2) the path: manchester—R2—internet has one serial link E1 and one link at 100Mbps
the first path has a metric greater than the second in term of transmition. a E1 link takes a time t = 1/1,54M ( where M is 10 power 6) to transmit one bit and a 100Mbps takes a tme T = 1/100M to transmit one bit
we notice that T = 9*t ( T is 9 or 10 times t )
so the cost in time for the path is: 2t+T ( 2E1 and one 100Mbps link)
the cost for the second path in time is just : t+T
so the second path is better than the first path thus the answer in this question is to make a default route with the second path.
in Q13, answer is F because if you look well
1) the path: manchester—london—R1—internet has 2 serial link E1 and one link at 100Mbps
2) the path: manchester—R2—internet has one serial link E1 and one link at 100Mbps
the first path has a metric greater than the second in term of transmition. a E1 link takes a time t = 1/1,54M ( where M is 10 power 6) to transmit one bit and a 100Mbps takes a tme T = 1/100M to transmit one bit
we notice that T = 9*t ( T is 9 or 10 times t )
so the cost in time for the path is: 2t+T = 2t+9t = 11t ( 2E1 and one 100Mbps link)
the cost for the second path in time is just : t+T = t+9t = 10t ( one E1 plus one 100 Mbps link )
so the second path is better than the first path thus the answer in this question is to make a default route with the second path.
(some errors in my 2 previous calculation, this is the right answer :-)
in Q13, answer is F because if you look well
1) the path: manchester—london—R1—internet has 2 serial link E1 and one link at 100Mbps
2) the path: manchester—R2—internet has one serial link E1 and one link at 100Mbps
the first path has a metric greater than the second in term of transmition. a E1 link takes a time t = 1/1,54M ( where M is 10 power 6) to transmit one bit and a 100Mbps takes a tme T = 1/100M to transmit one bit
we notice that T = 64*t ( T is 64 or 65 times t )
so the cost in time for the path is: 2t+T = 2t + 64t = 66t ( 2E1 and one 100Mbps link)
the cost for the second path in time is just : t+T = t+64t = 65t ( one E1 and one 100 Mbps )
so the second path is better than the first path thus the answer in this question is to make a default route with the second path.
@9tut,
Do u have any tutorials on IP Routing and Route Summarization?
@Q13
it’s waste of time to look at and calculate metrics, as all of the answers have next hop in direction to Internet via R2, so you just need to know how to set up a default route and what should be there as next hop.
@Nana: Please have a look in the Knowledge section (http://www.9tut.com/category/ccna-knowledge), you’ll find them
@nana
Route summarization or automatic summarization is nothing.
a subnetwork id is travelling through a different network the mask should be change.
for eg the 10 netowrk id having the mask/16 it travel through the two router with two differen id like 20 And 30 netowrk the mask value change /8..is called auto summary..if u can’t understand i explain more..
TY 9tut.
Today I have passed the CCNA. (860/825)
50 questions 3 labs (VTP, EIGRP, ACL). 35 from 9tut.
Also thanks a lot Brar and Sekhar (still valid from examcollection)
Ty again 9tut
from here Q 7
I’m retaking the ccna exam in on 25/01/13. Can somebody tell me the latest dump for Haiti plz?
Someone can give me the latest dump please?
Paul_stanley19@yahoo.fr
Questions 5 and 6 are technically wrong. See:
http://www.cisco.com/en/US/docs/ios/iproute_rip/command/reference/irr_rip.html#wp1011981
” If the interface configuration includes either the encapsulation frame-relay or encapsulation smds command, then the default is for split horizon to be disabled.”
I guess technically split horizon could have been enabled by mistake though.
Can anyone please send me the Latest dump for CCNA practice @ ranjan.vishwakarma4@gmail.com
I will be grateful if some one could send me the latest dumps at sendtomark10@gmail.co.uk
thanks
Regarding Q1, I doubt the correctness of option C . I think for R1 the destination MAC address should be Switch 2 port connected to itself.
Any comment?