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Drag and Drop 4

October 20th, 2018 Go to comments

Question 1

Question 2

Explanation

The control plane: The control plane is the brain of the router. It consists of dynamic IP routing protocols (that is OSPF, IS-IS, BGP, and so on), the RIB, routing updates, in addition to other protocols such as PIM, IGMP, ICMP, ARP, BFD, LACP, and so on. In short, the control plane is responsible for maintaining sessions and exchanging protocol information with other router or network devices.

The data plane: The data plane is the forwarding plane, which is responsible for the switching of packets through the router (that is, process switching and CEF switching). In the data plane, there could be features that could affect packet forwarding such as quality of service (QoS) and access control lists (ACLs).

Reference: http://www.ciscopress.com/articles/article.asp?p=2272154&seqNum=3

Question 3

Explanation

The “T” letter symbolizes for “twisted pair cable” so all “BASE-T…” types are copper.

Question 4


Question 5

Question 6

Question 7

Explanation

Minimum Time to Live: The TTL value for the first probes. The default is 1, but it can be set to a higher value to suppress the display of known hops.
Numeric display: The default is to have both a symbolic and numeric display; however, you can suppress the symbolic display.

Reference: https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13730-ext-ping-trace.html

Question 8

Question 9

Question 10

Drag and drop the CSMA components from the left onto the correct descriptions on the right

CSMA_Components.jpg

 

Answer:

+ 1-persistent: Access mode used for Ethernet network
+ CSMA/CA: Rules that define the system response when a collision occurs on a Wi-fi network
+ CSMA/CD: Rules that define the system response when a collision occurs on an Ethernet network
+ O-peristent: Access mode used in the controlled area network
+ P-persistent: Access mode used for Wi-fi networks

Explanation

1-persistent CSMA is an aggressive transmission algorithm. When the transmitting node is ready to transmit, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. If busy, then it senses the transmission medium continuously until it becomes idle, then transmits the message (a frame) unconditionally (i.e. with probability=1). In case of a collision, the sender waits for a random period of time and attempts the same procedure again. 1-persistent CSMA is used in CSMA/CD systems including Ethernet.

Non persistent CSMA is a non aggressive transmission algorithm. When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. If busy, then it waits for a random period of time (during which it does not sense the transmission medium) before repeating the whole logic cycle (which started with sensing the transmission medium for idle or busy) again. This approach reduces collision, results in overall higher medium throughput but with a penalty of longer initial delay compared to 1–persistent.

P-persistent is an approach between 1-persistent and non-persistent CSMA access modes. [1]When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. If busy, then it senses the transmission medium continuously until it becomes idle, then transmits with probability p. If the node does not transmit (the probability of this event is 1-p), it waits until the next available time slot. If the transmission medium is not busy, it transmits again with the same probability p. This probabilistic hold-off repeats until the frame is finally transmitted or when the medium is found to become busy again (i.e. some other node has already started transmitting). In the latter case the node repeats the whole logic cycle (which started with sensing the transmission medium for idle or busy) again. p-persistent CSMA is used in CSMA/CA systems including Wi-Fi and other packet radio systems.

O-persistent
Each node is assigned a transmission order by a supervisory node. When the transmission medium goes idle, nodes wait for their time slot in accordance with their assigned transmission order. The node assigned to transmit first transmits immediately. The node assigned to transmit second waits one time slot (but by that time the first node has already started transmitting). Nodes monitor the medium for transmissions from other nodes and update their assigned order with each detected transmission (i.e. they move one position closer to the front of the queue).[2] O-persistent CSMA is used by CobraNet, LonWorks and the controller area network.

Reference: https://en.wikipedia.org/wiki/Carrier-sense_multiple_access

Question 11

Drag and drop the IPv6 addresses from the left onto the correct types on the right

IPv6_addresses.jpg

 

Answer:

+ Modified EUI-64: DB:FC:93:FF:FE:D8:05:0A
+ multicast: FF01::1
+ unicast: 2020:10D8:0:0:85:800:52:7348
+ unspecified: ::

Question 12

Drag and drop the BGP components from the left onto the correct descriptions on the right.

BGP_components.jpg

 

Answer:

+ Device that running BGP: BGP speakers
+ Neighbor that share the same AS number as a local device: iBGP peer
+ Neighbor that located outside of AD domain of the local device: eBGP peer
+ Value that identify an administrative domain: Autonomous system number
+ Value that is advertise with network keyword: Prefix

Comments (29) Comments
  1. 3amar
    March 11th, 2018
  2. Andre
    April 5th, 2018
  3. kamal
    April 7th, 2018

    q2 correct answer is :
    #control plane:routing state exchange,filtering,device access
    #data plane :qos,establishing telnet sessions,data encapsultaion

  4. Ojo
    April 22nd, 2018

    I hate drag and drop

  5. AB
    April 23rd, 2018

    Ojo – Me2. Although they are no brainer but friggin time consuming.

  6. AB
    April 23rd, 2018

    @9tut

    In the quiz, the first questions answer shud be 124356 but if chooses this sequence then it marks it as fail and only accpets this sequence – 356124.

    It contradicts what’s being asked in the question “asks to arrange ascendingly”.

    Please check and rectify.

  7. 9tut
    April 23rd, 2018

    @AB: Please arrange ascendingly of each group. “356124” means “356” for “Copper” group and “124” for “Fiber” group.

  8. Tom
    April 24th, 2018

    is question 2 correct?

  9. amr osa
    April 28th, 2018

    Thanks god ia passed my exam 2day with score 915
    2 accesslist
    Eigrp Gre
    Eigrp Gre multilink
    Rip2
    Dhcp
    Dnd(Qos- bgp-cables-.other)
    McQ different

  10. Gregory
    May 5th, 2018

    @9TUT & @everybody else want to share thoughts

    Q9: + Administrative distance: indicator of the trustworthiness of the route
    + Destination network: remote network address
    + Metric: value used by the router to determine the preferred route
    + Next hop: network to which the router forwards packets on the associated route
    + Route source: code that indicates the method by which the router learned the route

    Shouldn’t Next hop & Destination network answers be reverse ?
    My thought I base this on is, that the “next hop” is a specific ip address (not a “NETWORK” !) and destination network is a whole subnet/network (thus not a remote network “ADDRESS”)

    Please comment if you agree or disagree. Thanx in advance.

  11. fces teban
    May 8th, 2018

    any comment about Gregorys point?

  12. Ronn
    May 21st, 2018

    I disagree with @Gregory, ’cause I think:

    – Remote network address: Where “remote” means a network or a network address that is beyond the scope of our network. (Usually after many hops).

    – Network to which the router forwards packets on the associated route: Where the router forwards packets to the network associated to the route and this would be the next hop.

  13. Ibtij
    May 24th, 2018

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  14. gaurav4u
    May 25th, 2018

    @Gregory- I think, in Q9, terms used are bit confusing, but if you read it again and again, you will realize they are pretty much ok.

    – Destination network=Remote network address. I feel its ok because the “destination network” is the place where packets are meant to be sent ultimately.

    – Next hop: network to which the router forwards packets on the associated route. It also feels ok, because next hop is the next destination(router) where a packet is meant to be sent on its way to the final network ie. destination network.

  15. Vlonee
    May 26th, 2018

    how was your exam @ibtij?

  16. Greg
    June 6th, 2018

    @9tut

    Part of your answer at Q7 DnD4 in .pdf is this:

    Minimum time to live: suppresses the display of hostnames
    Numeric display: suppresses the display of known hops

    However, also from your link those answers above should be reversed. Can you please correct it ?

  17. albama
    June 11th, 2018

    @9tut is correct answer ?
    q2 correct answer is :
    #control plane:routing state exchange,filtering,device access
    #data plane :qos,establishing telnet sessions,data encapsultaion

    i see other pdfs diferent and valid answer it . thanks

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    June 20th, 2018

    Hi everyone,

    Please send the latest dump 200-125 to me if you have, I am preparing for CCNA exam

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    June 21st, 2018

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  20. Anonymous
    August 10th, 2018

    Salut à tous,

    S’il vous plaît, envoyez-moi le dernier vidage CCNA 200-125 si vous en avez, je me prépare à l’examen CCNA la semaine prochaine.

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  21. Zamochit
    August 10th, 2018

    Hi
    Q2. For me the answer of 9tut is right , the chinese dump are wrong for this Drag and drop. What do you think? please your help.

    Control Plane:
    3. Routing state exchange
    4. Establishes telnet session
    5. Device access

    Data Plane:
    1. QoS
    2. Filtering
    6. Data Encapsulation

  22. r00t
    September 20th, 2018

    Hi,

    tomorrow I will take exam and update you with questions!

    BR, r00t

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    October 4th, 2018

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    October 31st, 2018

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    October 31st, 2018

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    November 3rd, 2018

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    November 11th, 2018

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  29. Port162
    December 2nd, 2018

    Hello everyone,

    Just wanted to know if this is the drag and drop about collision domain that they are referring to those who took the exam recently? i had a friend took the exam november 30 and he said this was not the collision domain drag and drop he encountered.

    + 1-persistent: Access mode used for Ethernet network
    + CSMA/CA: Rules that define the system response when a collision occurs on a Wi-fi network
    + CSMA/CD: Rules that define the system response when a collision occurs on an Ethernet network
    + O-peristent: Access mode used in the controlled area network
    + P-persistent: Access mode used for Wi-fi networks

    your reply would be much appreciated,
    thanks.

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