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Basic Questions 2

November 24th, 2018 Go to comments

Question 1


MDI stands for “Medium Dependent Interface”. MDI is a type of Ethernet port found on network devices. When connecting two devices with MDI ports (two hosts, for example) an Ethernet crossover cable is required. The crossover cable switches the send and receive ports on the two connectors, allowing data to flow correctly between two MDI ports.

Question 2


Physical addresses or MAC addresses are used to identify devices at layer 2 -> A is correct.

MAC addresses are only used to communicate on the same network. To communicate on different network we have to use Layer 3 addresses (IP addresses) -> B is not correct; E is correct.

Layer 2 frame and Layer 3 packet can be recognized via headers. Layer 3 packet also contains physical address -> C is not correct.

On Ethernet, each frame has the same priority to transmit by default -> D is not correct.

All devices need a physical address to identify itself. If not, they can not communicate -> F is not correct.

Question 3

Question 4


Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain.

For your information, there are 7 collision domains in this exhibit (6 collision domains between hubs & switches + 1 collision between the two switches).

Question 5


Use an Ethernet straight-through cable to connect an medium dependent interface (MDI) to an MDI-X port. Use a cross-over cable to connect an MDI to an MDI port, or an MDI-X to an MDI-X port.

Reference: https://www.cisco.com/c/en/us/td/docs/security/asa/hw/maintenance/5505guide/ASA5505HIG/pinouts.html

Note: MDI/MDIX is a type of Ethernet port connection using twisted pair cabling.

Question 6


Verify that the TFTP or RCP server has IP connectivity to the router. If you cannot successfully ping between the TFTP or RCP server and the router, do one of the following:
– Configure a default gateway on the router.
– Make sure that the server and the router each have an IP address in the same network or subnet.

Reference: https://www.cisco.com/c/en/us/td/docs/routers/access/1900/software/configuration/guide/Software_Configuration/upgrade.html

The first option implies the router can be in a different subnet from the TFTP server -> D is not correct.

TFTP has no encryption process so answer B is correct.

Question 7


At the end of each frame there is a Frame Check Sequence (FCS) field. FCS can be analyzed to determine if errors have occurred. FCS uses cyclic redundancy check (CRC) algorithm to detect errors in the transmitted frames. Before sending data, the sending host generates a CRC based on the header and data of that frame. When this frame arrives, the receiving host uses the same algorithm to generate its own CRC and compare them. If they do not match then a CRC error will occur.


The “Type/Length” field is used to indicate the “Type”of the payload (Layer 3 protocol) which is indicated as a Hexadecimal value.

Note: Ethernet II uses “Type” while the old Ethernet version use “Length”

Question 8

Question 9


Single-mode fiber allows only one mode of light to propagate. Because of this, the number of light reflections created as the light passes through the core decreases, lowering attenuation and creating the ability for the signal to travel further. This application is typically used in long distance, higher bandwidth.

Because of the high dispersion and attenuation rate with multimode fiber cable, the quality of the signal is reduced over long distances.

Reference: https://www.multicominc.com/training/technical-resources/single-mode-vs-multi-mode-fiber-optic-cable/

In fact it is difficult to say what the maximum distance of single-mode or multimode fiber but according to this link (table 1):


Single-mode cable is good for installations longer than 10km.

At present, there are four kinds of multi-mode fibers: OM1, OM2, OM3 and OM4. The letters “OM” stand for optical multi-mode. OM3 and OM4 fibers will support upcoming 40 and 100 Gb/s speeds.

Comments (13) Comments
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  1. Mek
    September 8th, 2019

    alguien me puede enviar el ultimo material de ccna, para tomar el examen de certificacion?

    Can someone send me the latest ccna material, to take the certification exam? {email not allowed}

  2. Anonymous G
    September 16th, 2019

    Hello, could you pretty please email me the latest CCNA routing and switching 200-125 dumps.
    I would be very grateful. geortapo(@)gmail(dot)com

  3. Anonymous
    September 19th, 2019

    where are the questions?

  4. BlackLechter
    October 21st, 2019

    Passed today with an 810 after cramming for 2 weeks.

  5. dmitry
    October 24th, 2019

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  6. Igor
    October 30th, 2019

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  7. Summar Patel
    November 5th, 2019

    kindly if anyone have latest dumps for ccna, please send me

    Thnak you so much!!!

  8. Podranok
    November 9th, 2019

    Q9. I wonder is it so hard to open and read Cisco documentation regarding some questions if you are trying to explain why some are correct and others not? I’ve counted at least 20 mistakes at 9tut dump. So guys, if you are in doubt for at least a little search for documentation for proof.
    As for question the correct answers are B and E.


  9. João
    November 14th, 2019

    kindly if anyone have latest dumps for ccna, please send me

    Thnak you so much!!!

  10. Victor
    November 17th, 2019

    Please can someone send me the latest ccna questions, will be very glad

  11. Anonymous
    November 18th, 2019

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  12. Anonymous
    November 18th, 2019

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  13. radhakrishnan
    November 19th, 2019

    Pls send me dumps 200-125, my mail krishnan2610 ( @ )gmail( dot )com

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