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NTP Questions

August 12th, 2015 in ROUTE 300-101 Go to comments

Question 1

Explanation

The command “ntp master [stratum]” is used to configure the device as an authoritative NTP server. You can specify a different stratum level from which NTP clients get their time synchronized. The range is from 1 to 15.

The stratum levels define the distance from the reference clock. A reference clock is a stratum 0 device that is assumed to be accurate and has little or no delay associated with it. Stratum 0 servers cannot be used on the network but they are directly connected to computers which then operate as stratum-1 servers. A stratum 1 time server acts as a primary network time standard.

A stratum 2 server is connected to the stratum 1 server; then a stratum 3 server is connected to the stratum 2 server and so on. A stratum 2 server gets its time via NTP packet requests from a stratum 1 server. A stratum 3 server gets its time via NTP packet requests from a stratum-2 server… A stratum server may also peer with other stratum servers at the same level to provide more stable and robust time for all devices in the peer group (for example a stratum 2 server can peer with other stratum 2 servers).

Question 2

Explanation

The “ntp broadcast client” command is used under interface mode to allow the device to receive Network Time Protocol (NTP) broadcast packets on that interface

Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ffun_r/frf012.html#wp1123148

Question 3

Comments
  1. Help please
    October 4th, 2016

    All, I failed today with a 640. The ‘300-101: Implementing Cisco IP Routing’ exam is completely different then what is on this site. Not even close. There are maybe 10 questions that are the same… What happened???

  2. Route101
    October 5th, 2016

    I had the same experience on the 4th.
    Seems like there is a new pool of questions.
    Lots of NTP and Netflow questions.

  3. Digital Eagle
    October 10th, 2016

    Were the simulation the same as here?

  4. Anonymous
    October 30th, 2016

    Although I have failed short of 5 marlks I have to say all the simulations are still based on these same topologies .There are more questions on infrastructure services and VPN technology that requires deeper understanding of the concepts to differentiate among the choices.

  5. IQ
    November 18th, 2016

    Hey guys, I just wrote now in USA. I Passed 300-101 with 92%. This dumps http://www.testmayor.com/300-101-test.html is valid but a few answers are wrong. Although I don’t expect to pass with a full score, right? If your aim is just to pass the exam, only by memorizing the dumps is enough. But if you want to master skills, you really need to practice more.

  6. Kush
    December 17th, 2016

    Yesterday i passed 300-101 exam with 790 points but questions were totally different. Only Sim LABs were same ….it was PBR LAB, Redistribution LAB , OSPFv6 LAB

  7. ott75
    January 5th, 2017

    failed the exam with 770
    a lot of NTP and frame relay new questions.
    can someone send me the new questions?
    ottavio(dot)backup(AT)gmail(dot)com

  8. abdo996
    April 9th, 2017

    failed the exam within 710 a lot of NTP, AAA, frame-relay have appeared in the new exam pool

  9. abdo996
    April 11th, 2017

    how can buy cisco ccnp routing & switching V 2.0 ?

  10. AnyMaster
    July 13th, 2017

    Which three NTP operating modes must the trusted-Key command be configured on for
    authentication to operate properly? (Choose Three)
    A. interface
    B. client
    C. peer
    D. server
    E. broadcast

    Correct Ans: B, C, E.
    See: http://www.cisco.com/c/en/us/support/docs/availability/high-availability/19643-ntpm.html
    ‘B’ because : “In some contexts, this would be described as a poll operation, in that the client polls the time and authentication data from the server. A client is configured in client mode by using the server command and specifying the domain name server (DNS) name or address.”
    ‘C’ because : Since an intruder can impersonate a symmetric active peer and inject false time values, symmetric mode should always be authenticated”.
    ‘E’ because : Since an intruder can impersonate a broadcast server and inject false time values, this mode should always be authenticated”.

  11. acme
    July 18th, 2017

    @anymaster
    BDE

  12. Dash
    July 19th, 2017

    Get it with me via darshendash @ gmail . com for latest dumps

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