300-320 Exam
atr 42 300 320 [Jan 2021]
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Q101. 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
Q102. In what situation must spanning-tree be implemented?
A. when first hop redundancy protocol exists with redundant Layer 2 links between distribution switches
B. when a VLAN spans access layer switches to support business applications
C. when trunks need to extend multiple VLANs across access switches
D. when it is necessary to speed up network convergence in case of link failure
Answer: A
Q103. Which first-hop redundancy protocol that was designed by Cisco allows packet load sharing among groups of redundant routers?
A. GLBP
B. HSRP
C. VRRP
D. VSS
Answer: A
Q104. What SAN technology can accomplish fabric infrastructure implementation using multiple fabrics?
A. VSAN
B. IVR
C. SCSI
D. NAS
Answer: A
Q105. Private lines make use of which connection type based on cell switching?
A. ATM
B. ISP MPLS VPN
C. VTI
D. VPLS
Answer: A
Q106. What are two advantages of using Cisco FEX devices in the data center design? (Choose two.)
A. Traffic-forwarding decisions are made by the Cisco FEX device.
B. Cisco FEX devices must be upgraded when the parent switch is upgraded.
C. Traffic-forwarding decisions are made by the parent switch, resulting in easier troubleshooting and centralized management.
D. Cisco FEX devices do not have to be upgraded when the parent switch is upgraded, resulting in cost savings.
E. Cisco FEX devices can be part of two different VDCs.
Answer: C,D
Q107. When a Cisco ASA adaptive security appliance is configured for active/standby failover, which MAC address is used for the active unit?
A. the MAC address of the primary unit
B. the MAC address of the secondary unit
C. the virtual MAC address
D. the standby MAC address
Answer: A
Q108. Which of the following two are effective and simple means of employing route summarization within the Enterprise Campus network? (Choose two)
A. A default route (0.0.0.0 /0) advertised dynamically into the rest of the network
B. Route filtering to manage traffic flows in the network, avoid inappropriate transit traffic through remote nodes, and provide a defense against inaccurate or inappropriate routing updates
C. Use manual split horizon
D. Use a structured hierarchical topology to control the propagation of EIGRP queries
E. Open Shortest Path First (OSPF) stub areas
Answer: A,E
Q109. Which three Layer 2 access designs have all of their uplinks in an active state? (Choose three.)
A. Flex Links
B. loop-free U
C. looped square
D. looped triangle
E. loop-free inverted U
Answer: B,C,E
Q110. To support the enterprise high-availability requirements, which workgroup switch technology can be used to interconnect multiple switches into a single logical unit?
A. StackWise
B. EtherChannel
C. VSS
D. vPC
E. Flex Links
Answer: A