Cisco 300-320 Online Practice Questions and Exam Preparation

Cisco 300-320 Online Questions & Answers

• Question 151:

  Which action can be taken on a multiaccess segment with OSPF speakers to reduce the performance impact during widespread convergence events?

  A. Separate the network into multiple areas for each new multiaccess segment.
  B. Enable LSA throttling in the core to slow link state advertisement updates during times of network instability.
  C. Ensure that the elected DR or BDR router can support high-volume convergence events.
  D. Verify that fewer than 50 OSPF speakers are on the segment.
  B. Enable LSA throttling in the core to slow link state advertisement updates during times of network instability.

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  "It is worth noting that three most important timers to tune network for sub-second convergence are the failure detection delay, initial LSA generation delay and initial SPF delay. All other timers, such as hold and maximum time serve the purpose of stabilizing network, and affect convergence in "worst-case" unstable network scenarios." More info on LSA throttling: https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fsolsath.html "Benefits of OSPF LSA Throttling Prior to the OSPF LSA Throttling feature, LSA generation was rate-limited for 5 seconds. That meant that changes in an LSA could not be propagated in milliseconds, so the OSPF network could not achieve millisecond convergence. The OSPF LSA Throttling feature is enabled by default and allows faster OSPF convergence (in milliseconds). This feature can be customized. One command controls the generation (sending) of LSAs and another command controls the receiving interval. This feature also provides a dynamic mechanism to slow down the frequency of LSA updates in OSPF during times of network instability."

• Question 152:

  HSRP has been implemented on distribution switches but no priority has been defined. Which one of the two switches will be active ?

  A. The one with the higher IP address configured on the interface
  B. The one with the higher MAC address configured on the interface
  C. The one which booted the last
  D. The one with the higher bandwith configured on the interface
  A. The one with the higher IP address configured on the interface

• Question 153:

  Seven sites are connected via OTV, what is the best practice to connect more than tree multicast sites using OTV

  A. Filter MAC address at the join interface
  B. Use multicast-enabled transport
  C. Use Unicast-only transport
  D. Configure one edge device for each data center
  B. Use multicast-enabled transport

• Question 154:

  When designing an Internet edge topology, where are common network services such as NTP placed so any user can reach them?

  A. External DMZ
  B. Internal network
  C. Open network
  D. Private DMZ
  A. External DMZ

• Question 155:

  Which three options are benefits of using VRFs within an enterprise network? (Choose three.)

  A. simplifies configuration and troubleshooting
  B. enables partitioning of network resources
  C. enhances security between user groups
  D. provides additional redundancy at Layer 3
  E. allows for routing and forwarding separation
  F. improves routing protocol convergence
  B. enables partitioning of network resources
  C. enhances security between user groups
  E. allows for routing and forwarding separation

• Question 156:

  An engineer is seeking to improve access layer convergence. Which two actions accomplish this goal? (Choose two.)

  A. Prune unused VLANs to switches.
  B. Propagate all VLANs to switches.
  C. Utilize Rapid PVST+.
  D. Implement MST.
  E. Configure storm control.
  A. Prune unused VLANs to switches.
  C. Utilize Rapid PVST+.

• Question 157:

  OTV relies on which underlying protocol?

  A. IS-IS
  B. EIGRP
  C. OSPF
  D. BGP
  A. IS-IS

• Question 158:

  An engineer must deploy a corporate QoS design in the shortest time possible. Which model accomplishes this goal?

  A. DiffServ
  B. intServ
  C. WRED
  D. Auto-QoS
  D. Auto-QoS

• Question 159:

  An organization is creating a detailed QoS plan that limits bandwidth to specific rates. Which three parameters can be configured when attempting to police traffic within the network? (Choose three)

  A. Conforming
  B. Violating
  C. Bursting
  D. Peak information rate
  E. Committed information rate
  F. Exceeding
  G. Shaping rate
  A. Conforming
  C. Bursting
  F. Exceeding

• Question 160:

  A link state routing protocol wants to connect tow separate domains, what should be configure ((it's a question about IS-IS)?

  A. Level 1 router
  B. Level 1 router interface
  C. Level 2 router interface
  D. Level 2 router
  D. Level 2 router