CCNP ONT Certification Test! Trivia Quiz

22 Questions | Total Attempts: 213

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CCNP ONT Certification Test! Trivia Quiz

This is a quiz over basic ONT topics. It is not intended to be a full review of material for the ONT exam, but a quick test of basic knowledge.


Questions and Answers
  • 1. 
    When is VAD most effective in reducing the amount of bandwidth consumed by VoIP calls?
    • A. 

      When it can be used for RTP header compression.

    • B. 

      When calls are mostly silence.

    • C. 

      On links less than 128Kbps.

    • D. 

      When it can be done using hardware vs. software based compression.

    • E. 

      When it is used with frame relay links.

  • 2. 
    What is the most complicated method for implementing QoS?
    • A. 

      MQC

    • B. 

      AutoQoS

    • C. 

      SDM

    • D. 

      CLI

    • E. 

      ACL

  • 3. 
    What are the similarities and differences between traffic shaping and policing?
    • A. 

      Traffic shaping and policing both help with congestion. Traffic shaping buffers excess traffic, traffic policing drops excess traffic.

    • B. 

      Traffic shaping and policing both help with congestion. Traffic shaping drops excess traffic, traffic policing queues excess traffic.

    • C. 

      Traffic shaping and policing both help with congestion. Traffic policing drops or marks excess traffic, traffic shaping queues excess traffic.

    • D. 

      Traffic shaping and policing always depend on classes. Traffic shaping queues excess traffic, traffic policing buffers excess traffic.

  • 4. 
    Wireless Access Points that use Wireless LAN controllers are called what?
    • A. 

      Lightweight Access Points

    • B. 

      Stand-alone Access Points

    • C. 

      Client Access Points

    • D. 

      Autonomous Access Points

    • E. 

      802.11e Access Points

  • 5. 
    What are the shortcomings of AutoQoS? (Select All that apply.)
    • A. 

      Too many traffic classes are generated by default.

    • B. 

      The AutoQoS configuration does not automatically change when the network does.

    • C. 

      The configuration generated by AutoQoS does not fit all network situations.

    • D. 

      AutoQoS cannot be used on encrypted tunnel interfaces.

    • E. 

      AutoQoS cannot be used with HTTP MIME types.

  • 6. 
    The Cisco Wireless LAN Solution Engine (WLSE) requires what to function? (Select All That Apply.)
    • A. 

      Lightweight Access Points

    • B. 

      Autonomous Access Points

    • C. 

      Wireless LAN Controllers

    • D. 

      Catalyst 6500 Series Wireless LAN Solutions Module

    • E. 

      CiscoWorks Wireless LAN Solutions Engine

  • 7. 
    The Cisco Unified Wireless Solution requires which of the following to function? (Choose all that apply.)
    • A. 

      Mobility Services

    • B. 

      Client Devices

    • C. 

      Network Management

    • D. 

      Network Unification

    • E. 

      Autonomous Access Points

  • 8. 
    What does CAC do to assist with VoIP calls?
    • A. 

      Provides signalling for end-to-end QoS

    • B. 

      Creates a Priority Queue using LLQ for VoIP packets

    • C. 

      Handles call initiation and tear-down

    • D. 

      Ensures enough bandwidth is available for a call before allowing it to be made

    • E. 

      Ensures that a call is allowed by security policy before allowing it to be made

  • 9. 
    What is the command to enable RSVP on an interface?
    • A. 

      Bandwidth rsvp

    • B. 

      Rsvp bandwidth

    • C. 

      Ip rsvp bandwidth

    • D. 

      Ip qos rsvp

    • E. 

      Autovoip rsvp

  • 10. 
    LFI aids with congestion how?
    • A. 

      By fragmenting larger packets into smaller packets and interspersing smaller packets between them.

    • B. 

      By combining smaller packets into larger packets to reduce the overall amount of packets.

    • C. 

      By creating a priority queue above CBWFQ for VoIP traffic.

    • D. 

      By randomly dropping packets to avoid tail drop.

    • E. 

      By policing overly aggressive flows so that smaller flows are able to use an interface.

  • 11. 
    Your boss wants to deploy VoIP on the network and has come to you wanting a QoS solution that will give priority to VoIP and help ease congestion. What would be your best recommendation given that he is not ready to deploy end-to-end QoS and he wants a high degree of control?
    • A. 

      CQ with RED. This will allow you to create specific queues for traffic based on business needs and reduce congestion from the most aggresive flows.

    • B. 

      AutoQos. This will allow a quick and easy deployment and would automatically take into account VoIP traffic.

    • C. 

      PQ with WRED. This would allow you to assign VoIP to a highest priority queue and allow you to drop packets from lower priority flows first.

    • D. 

      FIFO with RED. This would ease congestion by forcing slow TCP flows to transmit and would be easy to configure.

    • E. 

      LLQ with WRED. This would allow VoIP traffic a priority queue along with CBWFQ. WRED would drop least important packets first.

  • 12. 
    Which of the following orders of commands is correct for configuring LLQ on an interface using MQC? (Note that this is simplified to only 1 class for the sake of brevity and only QoS commands are included.)
    • A. 

      Access-list 100 permit any any udp range 16384 32000 class-map voip match access-group 100 policy-map 11q class voip priority 32 interface serial1/0 bandwidth 256 service-policy output 11q

    • B. 

      Interface serial1/0 bandwidth 256 service-policy output 11q class-map voip match access-group 100 policy-map 11q class voip priority 32 access-list 100 permit any any udp range 16384 3200

    • C. 

      Access-list 100 permit any any udp range 16384 32000 policy-map 11q class voip priority 32 class-map voip match access-group 100 interface serial1/0 bandwidth 256 service-policy output 11q

    • D. 

      Class-map voip match access-group 100 interface serial1/0 bandwidth 256 service-policy output 11q policy-map 11q class voip priority 32

    • E. 

      Interface serial1/0 bandwidth 256 access-list 100 permit any any udp range 16384 32000 class map voip match access-group 100 policy map 11q class voip priority 32

  • 13. 
    True or False: cRTP can not be enabled on Frame Relay links.
    • A. 

      True

    • B. 

      False

  • 14. 
    What is the generally accepted limit for delay for VoIP (round trip)?
    • A. 

      256Kbps

    • B. 

      250ms

    • C. 

      500ms

    • D. 

      3Mbps

    • E. 

      125ms

  • 15. 
    How does DiffServ differ from IntServ? (Choose all that apply.)
    • A. 

      DiffServ does not use signaling and uses per-hop behavior to enable end-to-end QoS.

    • B. 

      IntServ is called "hard QoS" and enforces QoS with resource reservation.

    • C. 

      All of the these answers are true.

    • D. 

      IntServ uses RSVP.

    • E. 

      DiffServ uses DSCP.

  • 16. 
    What is the header overhead for uncompressed headers used in calculating bandwidth for a VoIP call?
    • A. 

      IP - 8 bytes UDP - 12 bytes RTP - 20 bytes

    • B. 

      IP - 20 bytes UDP - 12 bytes RTP - 8 bytes

    • C. 

      IP - 20 bytes UDP - 15 bytes RTP - 8 bytes

    • D. 

      IP - 20 bytes UDP - 8 bytes RTP - 12 bytes

  • 17. 
    What is not considered when calculating total bandwidth for a VoIP call?
    • A. 

      Layer 2 header overhead

    • B. 

      Serialization Delay

    • C. 

      Voice Payload

    • D. 

      Header Compression

    • E. 

      Transmit Rate

  • 18. 
    What is a MIC?
    • A. 

      A Wireless Network Card for Draft-N technologies.

    • B. 

      A Management Interface Controller for a Wireless LAN Controller.

    • C. 

      A GPS transmitter that allows a Wireless Location Appliance to track clients and access points.

    • D. 

      A dynamic key generated for use with TKIP for authentication.

    • E. 

      A trap used with SNMP to report back issues with a Lightweight Wireless Access Point to a SNMP server.

  • 19. 
    What levels of QoS does the Cisco Unified Wireless Solution support?
    • A. 

      Interactive Voice, Transactional, Bulk Data, and Signalling

    • B. 

      Platinum/Voice, Gold/Video, Silver/Best Effort, Bronze/Background

    • C. 

      1, 2, 3, 4, 5, 6, 7 - with 7 reserved for signalling and management

  • 20. 
    Which Wireless Standard does Cisco use for Wireless QoS?
    • A. 

      802.11a

    • B. 

      802.11b

    • C. 

      802.11g

    • D. 

      802.1p

    • E. 

      802.11e

  • 21. 
    All the traffic flowing through a router that belongs to the same class in DiffServ is referred to as a
    • A. 

      Behavior Aggregate

  • 22. 
    How does IntServ decide if there is enough bandwidth to forward a packet?
    • A. 

      It uses the CIR configured on the interface and makes sure the packet size is smaller than the CIR.

    • B. 

      It checks for Explicit Congestion Notification messages sent from the next hop.

    • C. 

      It uses a token bucket system and forwards a packet only if enough tokens are present.

    • D. 

      It uses strict priority queuing to ensure that bandwidth is reserved for each flow.