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2021 Jan vxa-320 vxa-300:

Q101. 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 


Q102. Which type of connectivity is required for VPLS? 

A. full mesh 

B. partial mesh 

C. star 

D. bus 

E. ring 

Answer: A 


Q103. A network manager wants to securely connect a new remote site to the existing headquarters site using a VPN technology that meets security requirements. Which VPN technology should be used? 

A. GRE 

B. IPsec 

C. remote-access VPN 

D. L2TP VPN 

Answer: B 


Q104. What WAN feature can prioritize real-time, IP-based applications when circuits may be saturated? 

A. FRTS 

B. LLQ 

C. CBWFQ 

D. WFQ 

Answer: B 


Q105. A well-designed IP addressing scheme supporting role-based functions within the subnet will result in the most efficient use of which technology? 

A. Layer 3 switching in the core 

B. Network Admission Control (NAC) 

C. IP telephony (voice and video) services 

D. ACLs 

Answer: D 


Improved 300-320 arch pdf:

Q106. Which option describes the effect of using softphones instead of VoIP handsets on QoS implementation for the voice traffic? 

A. It provides a Layer 2 CoS marking in the frames that can be used for QoS implementation. 

B. Using softphones means that 802.1Q tagging must be configured between the PC and the switch. 

C. The voice traffic of softphones is mixed with data traffic of PC on the access VLAN. 

D. By using softphones, the implementation of a QoS depends only on trusting DSCP markings set by the PC. 

Answer: C 


Q107. Refer to the exhibit. Based on the configuration, why are routers R1 and R2 not exchanging OSPF routes? 

A. The OSPF process numbers are different. 

B. There is no backbone area configured. 

C. The router IDs are different. 

D. OSPF is not enabled on the interfaces. 

Answer: B 


Q108. Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer? 

A. Layer 3 routing between the Access and Aggregation layers facilitates the ability to span VLANs across multiple access switches, which is a requirement for many server virtualization and clustering technologies. 

B. "East-west" server-to-server traffic can travel between aggregation modules by way of the core, but backup and replication traffic typically remains within an aggregation module. 

C. Load balancing, firewall services, and other network services are commonly integrated by the use of service modules that are inserted in the aggregation switches. 

D. Virtualization tools allow a cost effective approach for redundancy in the network design by using two or four VDCs from the same physical switch. 

Answer: C 


Q109. A network engineer is building a LAN design that includes Cisco NAC. What two characteristics of an out-of-band NAC deployment are important to consider when evaluating it for the design? (Choose two.) 

A. supported by a limited number of switch models 

B. never in-line with user traffic 

C. aggregate client traffic is constrained to NAC server port speed 

D. recommended if sharing ports between IP phones and PCs 

E. supports real IP gateway (routed mode) 

Answer: A,D 


Q110. A company has hired an entry-level network administrator for its new data center. The company CIO wants to give the administrator limited access on the newly configured Cisco Nexus 7000. Which feature should be used to allow limited access? 

A. NAC 

B. VDC 

C. RBAC 

D. vPC 

Answer: C