Home > IP Routing 2

IP Routing 2

November 7th, 2018 Go to comments

Question 1

Question 2


The administrative distance of each protocol is compared to see if that route is better or not.

Question 3


Letter “D” is used to symbolize for EIGRP (with a default AD of 90). Letter “E” is not used for EIGRP because it has been used for Exterior Gateway Protocol (EGP). It is a obsolete routing protocol now.

Question 4

Question 5


If there is a default route then surely the router will forward all unknown traffic to there. But if there is no default route in the routing table then the router will discard the packet. In this question we suppose there is no default route in the routing table. Otherwise the question should state it (this question is unclear).

Question 6

Question 7

Question 8


Making a forwarding decision actually consists of three sets of processes: the routing protocols, the routing table, and the actual process which makes a forwarding decision and switches packets. The longest prefix match always wins among the routes actually installed in the routing table, while the routing protocol with the lowest administrative distance always wins when installing routes into the routing table.

routing_process.gifReference: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/8651-21.html

Question 9


In fact this question is not clear. If we understand that “router is unable to find a known route in the routing table” and there is no default route in the routing table then the router will surely discard the packet -> A is correct. But we are not sure if there is a default route or not so let learn more about gateway of last resort.

A Gateway of Last Resort is a route used by the router when no other known route exists to send the IP packet. For CCNA level, when ip routing feature is enabled, a gateway of last resort is usually created by:
+ The “ip default-network” command (but dynamic routing protocols have different behaviors). But in general, the “ip default-network” cannot set the gateway of last resort without a known route in the routing table.
+ Creating a static route to network is another way to set the gateway of last resort on a router. This is the reason why this question is not clear as it does not tell us if a default route exists or not.

Maybe in this question a default route does not exist. Otherwise the author would notice and indicate it in the question.

For more information about Gateway of Last Resort, please read: http://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/16448-default.html

Question 10


The default administrative distance value of static route is 1 which is always smaller than any dynamic routing protocol so it is always preferred to dynamic routing protocols.


Comments (30) Comments
Comment pages
1 2 3 3435
  1. Chad
    June 13th, 2017

    Passed with the 747q dumps, all questions were from there.

  2. Yammato
    June 13th, 2017

    Question 7
    If a route is not present in the routing table for a particular destination, what would the router do?

    If there is no route in the routing table the router should not discard the package? For at no time the enunciation of the question signals the present-day representation of a standard route. What if a default route was not configured on this router? The right thing would be to dispose of the correct package?

  3. Becky
    June 21st, 2017

    Question 9
    Answer should be D

  4. Anonymous
    June 24th, 2017

    Can you please give the link for the 747q dumps

  5. OSC
    June 26th, 2017

    In Q8 When a device learns multiple routes to a specific network, it installs the route with?

    The response longest bit match (highest subnet mask) is not correct because it sais ” it installs the route with?” not which route the router choose. If the router are installed allredy, the router choose the longest prefix match, but if it has to install a new route, it will install the one with the best AD.
    So best suitable response will be B Lowest AD.
    What do you think?
    Does anyone agree?

    Acording to: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/8651-21.html
    Making Forwarding Decisions

  6. JD
    June 26th, 2017

    Agreed to OSC. 9tut please correct. Thank You.

  7. JD
    June 26th, 2017

    Q8 is about installing the route in routing table not choosing a route from the routing table to route the packet.

  8. JD
    June 26th, 2017

    @Becky: And what if the router has no gateway of last resort configured? The question does not say anything about it.

  9. OSC
    June 27th, 2017

    And respect to Q5&9 at last we can make it at head or tail, it’s an anbiguos question and depends on how luky you are.
    Wha Q5 D and Q9 A?
    Why not the opposite?
    I don’t know, toss a coin and good luck!!

  10. @Anon
    July 8th, 2017

    I think in start configuration in routing table you don’t have any default of last resort.
    We should also point if router didn’t found any match means that you don’t have any Default Gateway, because if it exist we will not give information “router unable to find know destination”

    ip route any adres any mask

  11. Anony
    July 12th, 2017

    I agree with the above comments that say that Q8 is B.
    The device learns about multiple routes to a network and must choose one to install – it’s not choosing an already installed route to use. It’s installing a new one. So it will use the lowest AD.

  12. db
    July 13th, 2017

    Hi all,

    Can you send me 747q dumps on dblagojevic988 @ gmail. com ?

    Thank you!

  13. Arun
    July 18th, 2017

    Hi all

    Can you guys please send me 747q dumps to {email not allowed}

  14. Arun
    July 18th, 2017

    arunkrish666 @ gmail .com

  15. Salman
    July 22nd, 2017

    Please share 747q to salmankhan741 @ yahoo. com

  16. nickaro
    August 12th, 2017

    In Q.5 the supposed correct answer is D, but the explanation says the correct anser is B. What’s the right one? In my opinion is B.

    By the same reason in Q.7 te correct answer must be C.

    At no time, it is said the there is a default route configured. So, packets must be dropped.

    On the other hand, in Q.9, exactily the same case, the correct answer points to A (discard packet)

    Any opinion about ??

  17. nickaro
    August 12th, 2017

    I totally agree with you about Q.8, OSC.

    9tut please correct. Thank You.

  18. 9tut
    August 12th, 2017

    @nickaro: Thanks for your information. For Q.5 we have just updated the correct answer to B. Maybe in this question there is no default route, otherwise it should be clearly state.

  19. coco
    August 14th, 2017

    The Question 8 should be the lowest AD (Administrative Distance), in fact @9tut copied the link and the links says the lowest AD, so please fixed, we paid for it.

  20. manoj
    August 16th, 2017

    Hi all
    Can you guys please send me 747q dumps to
    tiwarimanoj50 @ gmail .com

  21. Anonymous
    August 30th, 2017

    hi all, kindly send me 747 dumps to hugo.nguyenthomas @ gmail.com

  22. Brainiac
    September 1st, 2017

    Q5 answer is D.
    Q7 answer is C.
    Q8 answer is B.
    Q9 answer is A.
    Read up here: https://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/8651-21.html

  23. Brainiac
    September 1st, 2017

    Q5 answer is D. cos the question specified “destination NETWORK”
    Q7 answer is C. cos the question specified “PARTICULAR destination”
    Q8 answer is B. cos the question asks for what gets installed.
    Q9 answer is A. 9tut answered this one correctly.
    Read up here: https://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/8651-21.html

  24. anon
    September 10th, 2017

    I think question 6 should be D.

    If two routes have the same AD then the metric would be used correct?

  25. anon
    September 10th, 2017

    q5 explanation does not match with question

  26. anon
    September 10th, 2017

    None of the explanations after Q5 match with the question

  27. Yemi
    September 15th, 2017

    Please help me send the dumps to {email not allowed}
    Thank you

  28. Yemi
    September 15th, 2017

    Please help me send the dumps to amurelove @ yahoo . com

  29. Preeti
    September 21st, 2017

    what indicates metric in output of “sh ip route”?
    D [110/24534] via, 00:10:04, FastEthernet0/0
    Ans: 24534

  30. Peppino
    September 23rd, 2017

    Someone can send me all the dumps? I’m trying to take the exam on oct 16 . tnx to all (derath(at)hotmail.it)

Comment pages
1 2 3 3435
Add a Comment