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New Cisco 300-320 Exam Dumps Collection (Question 1 - Question 10)
Q1. An engineer is attempting to improve OSPF network performance and discovers that the entire SPT
recomputes whenever a type 1 or type 2 LSA is received within an area. Which action can optimize SPT operations?
A. Tune LSA throttling thresholds.
B. Enable incremental SPF.
C. Configure totally stubby areas throughout the domain.
D. Summarize networks on all ABRs.
Answer: B
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/ospfispf.html#wp1027184
"Benefits of OSPF Incremental SPF OSPF uses Dijkstra's SPF algorithm to compute the shortest path tree (SPT). During the computation of the SPT, the shortest path to each
node is discovered. The topology tree is used to populate the routing table with routes to IP networks. When changes to a Type-1 or Type-2 link-state advertisement (LSA) occur in an area, the entire SPT is recomputed. In many cases, the entire SPT need not be recomputed because most of the tree remains unchanged. Incremental SPF allows the system to recompute only theaffected part of the tree. Recomputing only a portion of the tree rather than the entire tree results in faster OSPF convergence and saves CPU resources. Note that if the change to a Type-1 or Type-2 LSA occurs in the calculating router itself, then the full SPT is performed.
Incremental SPF is scheduled in the same way as the full SPF. Routers enabled with incremental SPF and routers not enabled with incremental SPF can function in the same internetwork."
Q2. A network Engineer is designing a hierarchical design and needs to optimize WAN design.
On what group of devices can a network engineer summaries routes to remote WAN sites?
A. Core
B. Distribution
C. Data Center Distribution WAN Edge
D. WAN Edge
E. Campus access distribution layer
Answer: B
Explanation: Summarize at Service Distribution. It is important to force summarization at the distribution towards WAN Edge and towards campus & data center
Q3. What is the primary benefit of deployment MPLS over the WAN as opposed to extending VRF-lite across the WAN?
A. convergence time
B. low operating expense
C. low latency
D. dynamic fault-tolerance
Answer: B
Q4. Web server placed in front of the firewall in ACI?
A. Application profile
B. L4-L7 services
Answer: B
Q5. Which statement about vPC technology is true?
A. It allows a device to connect to two separate upstream devices as if they were a single device.
B. It provides the ability to pair two servers in the data center.
C. It promotes better STP designs in the switching infrastructure.
D. It supports IEEE 802.1Q only
Answer: A
Q6. An engineer must design a Cisco VSS-based configuration within a customer campus network. The two VSS switches are provisioned for the campus distribution layeru2026 Which option is the primary reason to avoid plugging both VSL links into the supervisor ports? (E)
A. The implementation creates a loop
B. The design lacks optimal hardware diversity
C. Limited bandwidth is available for VSS convergence
D. QoS is required on the VSL links
Answer: B
Explanation: The best-practice recommendation for VSL link resiliency is to bundle two 10-Gbps ports from different sources. Doing this might require having one port from the supervisor and other from a Cisco 6708 line card.
When configuring the VSL, note the following guidelines and restrictions:
For line redundancy, we recommend configuring at least two ports per switch for the VSL.
For module redundancy, the two ports can be on different switching modules in each chassis.
Q7. Which protocol is required for end-to-end signaling in an IntServ QoS architecture?
A. RSVP
B. DSCP
C. ToS
D. LLQ
E. DiffServ
Answer: A
Q8. Refer to the exhibit.
Which recommended practice is applicable?
A. If no core layer is deployed, the design will be easier to scale.
B. A dedicated campus core layer should be deployed for connecting three or more buildings.
C. If no core layer is deployed, the distribution switches should not be fully meshed.
D. A dedicated campus core layer is not needed for connecting fewer than five buildings.
Answer: B
Q9. Which L2 messaging protocol maintains VLAN configuration consistency?
A. VTP
B. STP
C. LACP
D. CDP
Answer: A
Q10. Which option is a design recommendation for route summarizations?
A. Filtered redistribution for the prevention of re-advertising of routes
B. Routing protocol stub areas
C. Route summarization for scalable routing and addressing design
D. Defensive route filtering to defence against inappropriate routing traffic
E. Route summarization to support greater volumes of transit traffic
Answer: B
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