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CCNA – Drag and Drop 3

March 5th, 2015 Go to comments

Here you will find answers to CCNA Drag and Drop Questions – Part 3

Question 1

Question 2

Explanation

Remember these rules:

The IP addresses (of source and destination) of a packet never change during the transportation through the network. For example if PC-A wants to send a packet to PC-Z then the source and destination IP addresses of the packet will be the IP addresses of PC-A and PC-Z no matter how many devices they go through.

The MAC addresses, conversely, will change while passing the devices. The source MAC address is the address of the last sender and the destination MAC address is the address of the next device.

Question 3

Question 4

Explanation

When a router boots up, it performs a series of steps, called the boot sequence, to test the hardware and load the necessary software. The boot sequence consists of the following steps:

1) Power on self test (POST): tests the hardware to verify that all components of the device are operational and present.
2) The bootstrap loader in ROM executes: The bootstrap loader is a program in ROM that is used to find where a valid Cisco IOS image is located.
3) If a valid Cisco IOS image is located, it is loaded.
4) IOS loads configuration file. Once the IOS image is loaded, it will search for a valid startup configuration in NVRAM.
5) If a valid startup configuration file cannot be found, the router will load the System Configuration Dialog (sometimes called setup mode). This mode allows you to perform the initial configuration of the router.

Question 5

Explanation

If we have many entries matching for next hop ip address then the router will choose the one with most specific path to send the packet. This is called the “longest match” rule, the route with the most bits in the mask set to “1” will be chosen to route packet.

For example, the destination IP address of 10.1.0.14 will match two “ip route” commands:

ip route 10.1.0.0 255.255.255.0 192.168.2.2
ip route 10.1.0.0 255.255.0.0 192.168.3.3

But the first command is more specific (10.1.0.0/24 is more specific than 10.1.0.0/16) so the packet will be routed to 192.168.2.2.

Note: The IP address 10.1.1.10 only matches the second command “ip route 10.1.0.0 255.255.0.0 192.168.3.3”. It does not match the command “ip route 10.1.0.0 255.255.255.0 192.168.2.2” because the third octet is different (10.1.1.10 is different from 10.1.0.0/24).

Question 6

Explanation

Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. It is a measure of the trustworthiness of the source of the routing information. The smaller the administrative distance value, the more reliable the protocol.

In this question, notice that the destination of all routes is 10.1.1.0/24 so we need to use Administrative distance of each routing protocol to specify the priority of each route. Below lists the Administrative Distance default values of popular routing protocols:

+ Directly connected: 0
+ Static route: 1
+ EIGRP (symbolize by “D”): 90
+ OSPF (symbolize by “O”): 110
+ RIP (symbolize by “R”): 120

Comments (21) Comments
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  1. MehD
    March 13th, 2015

    would anyone pls send me the latest dumps : s.mahdiamiri@outlook.com
    i’ll take the exam next month

  2. Peter
    March 26th, 2015

    Q2, Q5

  3. Dalmar
    April 13th, 2015

    Hi Guys do u have any latest dumps…..

  4. messi
    April 16th, 2015

    9tut is enough to pass the ccna exam.

  5. Caudrick
    April 16th, 2015

    Hi, please i dont understand Q5. can you explain more. thank for you savmore, but i dont understand

  6. Tomáš
    April 16th, 2015

    Hello Caudrick:

    Routing table shows 2 subnets and 1 default route

    1st subnet is 10.1.0.0 255.255.255.0 = 10.1.0.0/24
    It means, you are taking care about 24 bits/3 octets of the IP address: 10.1.0
    In other words, every packet which begins with 10.1.0.X will be forwarded to 192.168.2.2.
    If you have a closer look, there are 2 packets matching:
    + 10.1.0.14
    + 10.1.0.123

    2nd subnet is 10.1.0.0 255.255.0.0 = 10.1.0.0/16
    It means, you are taking care only about 16 bits/2 octets of the IP address: 10.1. You dont take care, what is further.
    In other words, every packet which begins with 10.1.X.X (and not matching first subnet) will be forwarded to 192.168.3.3.
    + 10.1.1.10
    + 10.1.4.6

    YOU CAN’T PUT HERE THESE IP 10.1.0.14 / 10.1.0.123 BECAUSE THEY MATCH THE FIRST NETWORK (BASED ON LONGEST MATCH RULE)

    Last one is “default route” used for packets not matching any of networks above. Put the remaining ones:
    + 10.2.1.3
    + 10.6.8.4

    I hope, all is clear now. If not, take pen, paper, write those network binnary and follow the longest match rule.

  7. abc
    April 20th, 2015

    Without simulation is it possible to pass for exam

  8. Veny
    April 22nd, 2015

    each sim carry 100 marks….so its impossible to clear without sim

  9. Mits
    May 7th, 2015

    Q2 & Q5 today

  10. Tiana
    May 8th, 2015

    Thank you savmore..it was helpful

  11. R
    May 27th, 2015

    Hi Tomas. Your explanation was great! :D

  12. John Nhoj
    June 11th, 2015

    Q5 in todays exam

  13. Jeff
    June 11th, 2015

    which drag and drop questions are there in the exams, please help

  14. Lord-Pewon
    June 20th, 2015

    I just made my ccna 200-120 exam few hrs ago.
    It was quite eazy; same questions (Acl 1&2, Eigrp & one drag & drop q1 above), infact 87% questions from 9tut.
    Got 931/1000
    I didn’t use dumps, just test questions from here i.e 9tut, orbit & some free pdf online(got some too on phone @ google playstore.
    I give almighty God all the glory & I also wish you guys all the best.

    thank you 9tut.
    you are the best.

  15. Questions Today
    June 24th, 2015

    Q1 and Q5 was in exam. Praise The Lord and thnx 9tut passed on 24th june 986/1000.
    Some new questions to be observed:
    What will happen if a private IP address is assigned to a public interface connected to an ISP?
    A. Addresses in a private range will be not be routed on the Internet backbone.
    B. Only the ISP router will have the capability to access the public network.
    C. The NAT process will be used to translate this address to a valid IP address.
    D. A conflict of IP addresses happens, because other public routers can use the same range.
    Answer: A
    What are three values that must be the same within a sequence of packets for Netflow to consider
    them a network flow? (Choose three.)
    A. source IP address
    B. source MAC address
    C. egress interface
    D. ingress interface
    E. destination IP address
    F. IP next-hop
    Answer: A,D,E

  16. Anonymous
    June 26th, 2015

    guys get free dumps from following link
    wurl. cc/dumps

  17. sayfee
    July 1st, 2015

    For Question 6:
    Routers select best routes based on the following criteria:
    1. Longest prefix match
    2. Administrative distance
    3. Metric

  18. Happy CCNA 1000!
    July 4th, 2015

    I did my CCNA today July 4th. I scored 1000 perfect score, I really thank God! Same questions as here on 9tut and the ones mentioned in comments. Labs Eigrp AS 112, ACL 1 ACL2. It was quite easy folk just be focused and positive and prepared.

    Oh thanks to someone whose name i cant remember now, his material/software was very helpful.

    Best of luck guys!.

  19. 9tut
    July 12th, 2015

    @all: We had to move all the questions and answers out of 9tut. We can only keep the explanation. You can download the questions and answers at: https://mega.co.nz/#!wt9kVCjL!vvp79FTtjsqfpCgq0uTOTKlE6_qsLY6C_m163sNGs_s

  20. Niel
    August 18th, 2015

    Hi 9tut! i would just like to ask a questions are questions here are all up to date? are they all updated weekly? are they updated from time to time?

  21. Anonymous
    February 23rd, 2017

    hi anybody want to clear ccna & ccnp xam kindly contact me
    manmeets58gmail.com

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