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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 (11) Comments
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  1. Kola
    June 30th, 2018

    My exam is in 5 days. Please I need 200-125 updated dumps. Kollzey69(at)gmail(com). Please someone help!

  2. Umbro
    July 15th, 2018

    Does anyone really sends dumps to the email? :)

  3. Bekarion
    August 16th, 2018

    “If a route is not present in the routing table for a particular destination, what would the router do?
    A. Default route
    B. Flood
    C. Drop

    Answer: C ”
    Why C and not A?

  4. MJ
    November 11th, 2018

    C is correct.

    See Q9 , this will makes it clear for you.

  5. bill
    April 12th, 2019

    please be careful with this question from 9tut dumps, it is wrong!

    Question 8
    When a device learns multiple routes to a specific network, it installs the route with?
    A. longest bit match (highest subnet mask)
    B. lowest AD
    C. lowest metric
    D. equal load balancing
    Answer: B

    it it not B, real answer is A

  6. bill
    April 12th, 2019

    this question came up in my ICND1 exam last august. and i guessed the answer lol:

    Question 2

    Which definition of a host route is true?

    A. A route that is manually configured
    B. A route used when a destination route is missing
    C. A route to the exact /32 destination address
    D. Dynamic route learned from the server

    Answer: C

  7. ser
    May 25th, 2019

    Q9 and simular is wrong.

    If we write for sample :
    #ip route
    #ip default-network

    #show ip ro
    Gateway of last resort is to network

    * is variably subnetted, 2 subnets, 2 masks
    S* [1/0] via is subnetted, 1 subnets
    C is directly connected, FastEthernet0/0

    We have gateway of last resort without
    And I checked ping “any other network”, it’s this passes.

  8. Anonymous
    July 1st, 2019

    Q9 is definitely Gateway of Last Resort or Default Route. You guys are way over thinking a very simple question.

  9. Podranok
    November 2nd, 2019

    Q9. I agree with previous orator. If router has default route in routing table it will use it. Answer is D.

  10. RichardSN
    November 9th, 2019

    Question 8’s answer is definitely not A, but C (lowest metric).

    “When a device learns multiple routes to a specific network, it installs the route with?”.


    “Metrics are values associated with specific routes, ranking them from most preferred to least preferred. The parameters used to determine the metrics differ for different routing protocols. The path with the lowest metric is selected as the optimal path and installed in the routing table”

    Question 8 is not saying that those multiple paths are learned with different ADs so we can infer that those are learned from a single AD A.K.A a single Routing protocol.

  11. negi
    January 6th, 2020

    Which value is indicated by the next hop in a routing table?
    A. preference of the route source
    B. IP address of the remote router for forwarding the packets
    C. how the route was learned
    D. exit interface IP address for forwarding the packets

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