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Miscellaneous Questions

October 12th, 2010 in CCIE Written Go to comments

Here you will find answers to Miscellaneous Questions

Question 1

You replaced your Layer 3 switch, which is the default gateway of the end users. Many users cannot access anything now, including email, Internet, and other applications, although other users do not have any issues. All of the applications are hosted in an outsourced data center. In order to fix the problem, which one of these actions should you take?
A. Clear the MAC address table in the switch.
B. Clear the ARP cache in the switch:
C. Clear the ARP cache in the end devices.
D. Clear the ARP cache in the application servers.

Answer: C

Question 2

Refer to the exhibit. Look at the command output. What would be the most probable reason for this port-ID mismatch?

Switch 1#show cdp neighbors
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge, S – Switch, H – Host, I – IGMP, r – Repeater

Device ID Local Intrfce Holdtme Capability Platform Port ID
Switch2 Gig 1/0/3 160 S I WS-C3750G Gig 1/0/11


Switch 2#show cdp neighbors
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge, S – Switch, H – Host, I – IGMP, r – Repeater

Device ID Local Intrfce Holdtme Capability Platform Port ID
Switch1 Gig 1/0/11 173 R S I WS-C3750G Gig 1/0/4


A. spanning-tree misconfiguration
B. speed mismatch configuration
C. cabling problem
D. configuration problem

Answer: C

Question 3

When troubleshooting a network, the output of the command show interfaces indicates a large number of runts. What is a runt?

A. the number of packets that are discarded because they exceed the maximum packet size of the medium
B. errors created when the CRC generated by the originating LAN station or far-end device does not match the checksum calculated from the data received.
C. the number of packets that are discarded because they are smaller than the minimum packet size of the medium
D. the number of received packets that were ignored by the interface because the interface hardware ran low on internal buffers
E. the number of times that the interface requested another interface within the router to slow down

Answer: C


A runt is a packet that fails to meet the minimum size standard (below 64 bytes for Ethernet packet). Network protocols such as Ethernet often require that packets be a minimum number of bytes in order to travel the network. Runts are often the result of packet collisions along a busy network or can result from faulty hardware that is forming the packets or from corrupted data being sent across the network.

Question 4

A network administrator has applied the NTP peer statement to a Cisco IOS router. Which additional function is simultaneously being used on this router?

A. static server
B. symmetric active mode
C. NTP broadcast client
D. static client

Answer: B

Question 5

NTP will allow you to establish which three relationships between two networking devices?

A. client
B. server
C. broadcast
D. anycast

Answer: A B C

Question 6

Which command can be used to solve the problem caused by a router configured with multiple DHCP pools?

A. host
B. default-gateway
C. network
D. ip helper

Answer: A

Comments (27) Comments
  1. Raja
    December 24th, 2010

    IP services – 2
    IPV6 Questions – 7
    Multicase Questions – 6
    Drag & Drop questions – 1
    Qos question – 11
    qos question2 – 1
    voice questions – 5
    Ip routing – 3
    mpsl questions – 5
    security question – 3
    acl questions – 2
    switching basics – 9
    stp – 10
    stp2 – 8
    vlan & VTP queston – 4
    OSPF – 7
    EIGRP – 5
    BGP – 7
    miscellaneous – 3

    Totally – 110 q&ans thanks a lot for explanation

  2. jimbob
    April 29th, 2011

    Question 6 i think is incorrect – surely the answer is D.. If you have multiple DHCP pools on a router then clients broadcasting a DHCP “Discover” will be “offered” based in a round robin fashion by each scope if they were all coming through the same router interface. Thus no control of what addresses are being dished out and to whom.

    If an ip-helper is configured on each vlan interface (or Sub interface on the router on a stick) then the hosts belong to that vlan would recieve the correct DHCP address.

    Also never heard of a “host” command except “ip host” or “switchport host”

  3. jimbob
    April 29th, 2011

    Just foudn the DHCP “host” command, but it still does ot explai the question as it can only be used once for each DHCP pool..

  4. bill
    April 30th, 2011

    I think q 6 may be more a process of elimination between host and helper as which is more wrong.

    I think helper will have little effect in selection of the correct pool on the router. If you direct it to the router it is configured on it will do nothing more than if you did not put the helper in. It will still select the pool based on the ip. If you send it to another router all it does is cause it to completely ignore the pools, it would easier to delete them. Now if you have multiple DHCP pools and multiple interfaces then why would that be a problem and it will work without a helper.

    Using Host actually makes the “problem” of DHCP pools worse. You would put in one pool for each host you wanted to assign a static ip to. Although they are called pools it is a single ip.

    The only way I could see you would even need a second pool would be if you did something like assign a secondary IP but wanted to control assignment.

    I am going to guess the answer is host mostly because it does more than just ignore the “problem”

  5. jimbob
    April 30th, 2011

    Bill, thaks for the reply — I agree with you, I think the question is so bad that its a toss up between the two “related” commands.. and I suppose its pure guess work as to what the “problem ” actually is ? anyway I got the exam in a few weeks so I might be able to post better wording if I get this question. I think I will go with “host”

  6. bill
    April 30th, 2011

    After thinking some more on this it may be the simple answer that they want. The way the server works is to compare the ip address of the interface the request came in on to the NETWORK statement within the DHCP pool configuration to select the pool to use. I guess I am hung up on the word problem.

  7. jimbob
    April 30th, 2011

    Bill, this would negate the word “problem” from the question as you are correct that the network statement would match the inbound interface subnet.

    I think that if the router had only a single inbound interface and mulitple DHCP pools for different networks then the issue comes where the you have to put the ip-helper onto the vlans / subnets remotely to select the source and change the Broadcast to unicast before it arrives a the DHCP router.

    I hae a similar thing where I work ad this is how we deal with DHCP servers with multiple scopes on them.

  8. goingtotestccie
    May 7th, 2011

    In O’reilly Cisco IOS Cookbook on page 862 it says “In particular, you must assign a separate dhcp pool for each static server. In our example, we created a pool named IAN to allocate a static IP address to user Ian. Also, instead of defining a network range of IP addresses, you assign a specific IP address USING THE HOST COMMAND.”

    on page 861:
    config#ip dhcp pool IAN

  9. pOp
    May 26th, 2011

    Host command is mainly used to assign a particular IP for a particular client, binding the MAC of client to the IP that need to be assigned.
    config#ip dhcp pool IAN

    But wonder how it is going to solve the issue with multiple DHCP pools?

  10. Anon192168
    August 6th, 2011

    Q6. Read bad question…
    I think the scenario would be you have two DHCP pools, one pool A and one pool B. They both have the same network space, pool A uses the first 128 address and the pool B uses the remaining address. For some reason you want pool B maybe pointing to different DNS server, so you have two pools. But the interface they are serving is Fas 0/0 and its IP so both pools are going to be used. (trying to read a lot into these great one line problems). So in this case you would need a manual binding for each pool. IP Helper isn’t going to do anything but forward the packet (turn from a broadcast to unicast), since the pools local this would not apply, answer D is wrong. The network statements are different, but which pool is my host going to use (maybe this is the problem)? So I have issues with choosing C. Changing the default gateways wouldn’t resolve a “POOL issue”, so answer B is wrong.
    You could do a manual binding to the appropriate pool.
    To configure a manual binding, first create a host pool, then specify the IP address of the client and client identifier or hardware address. Keyword ‘Host’ would be the correct answer. (A).

    The only other possible answer I could read into this would be the network. But I think the keyword is “problem caused”, Network statements are standard I have two pools on my little home 2600 one for wireless one for the Internet, but they are two different interfaces, so I don’t have a “pool problem” , so I’m assuming the base config is correct. ….what a @(#*&$ question….



  11. Linda
    October 16th, 2011

    We’ve airvred at the end of the line and I have what I need!

  12. troll warlord
    October 23rd, 2011

    Q6. obviously B >,<

  13. troll warlord
    October 23rd, 2011

    OMG, but it supposed to be “default-router” not “default-gateway” @_@

  14. diya_1426
    December 6th, 2011

    what about Q2?

  15. choco
    January 18th, 2012

    Q2 is correct. Cabling problems can result on this scenario, i’ve seen it happend more than once. imagine tx and rx crossing.

    This is a very nice forum. Congrat RSTUT. Very good info.

  16. just failed
    March 3rd, 2012

    My elimination works different:
    See this:
    three DHCP address pools are created. there no so called “problem”. all used “network” statements. network/host are there to define pools and I don’t think any of them is a solution to any problem.
    default-gateway is obvious no.
    so there is only “ip helper-address” left.

  17. Ahmed
    April 27th, 2012

    Hi Guys,

    Q2: What would be the most probable reason for this port-ID mismatch?

    Can any one please explain why cabling is the correct answer?

  18. Raj
    June 14th, 2012

    Any one tell me please, how many questions are there in CCIE R&S written exam and overall exam time in hours….

  19. Loli
    June 20th, 2012

    Hi Raj
    I think its 100 multiple choice questions, exam duration is 2 hours

  20. Lonesomeboy
    August 10th, 2012


    For those of you making it this far here’s a good torrent with the VCE exam (crack included) and two CCIE question files each with 400+ questions.


    Thanks again for the site RSTUT.

  21. Kaps
    December 19th, 2012

    Hey guys, so what is our conclusion for Q6 ?

  22. Gareth
    May 25th, 2013


    Can anyone explain the answer to Q2? How can a cabling problem make switches at either end of a connection disagree about which port is used at one end?

    Thanks in advance.

  23. Red_Back
    June 4th, 2013

    @Gareth: Please read more about UDLD, in case cisco optical port which TX of 1/0/3 connect to RX of other end 1/0/11, while RX of 1/0/4 connect to TX of other end 1/0/11
    1/0/3TX – – – – – – – – – – – – – – RX 1/0/11
    Cisco A – – – – – – – – Tx CiscoB
    1/0/4RX- – – – – -/

    You got it?

    September 15th, 2013

    How much CCIE Written paper cost in USD ??

  25. Houston123
    December 25th, 2013

    @bilal kahn – $350

  26. NewCCNP
    August 20th, 2014

    Now the cost is 400$ USD 🙂 for CCIE R&S v5 Written

  27. Shokh, UZB
    January 13th, 2015

    Hello CCIE engineers, I have a personal question, please I need a hand)

    Possibility to provide same IP to clients equipment via DHCP protocol?

    many thanks

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