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Q81. A Layer 2 switch in the network has recently started broadcasting traffic out of every port and is impacting network performance. The engineering department determines that a MAC overflow attack is the cause. Which two features can protect and mitigate the damage of the attacks? (Choose two.) 

A. Storm Control 

B. Port Security 

C. SPAN 

D. BPDU Filters 

E. IP Source Guard 

F. VACLs 

Answer: A,B 


Q82. Which two options are VRF components. (Choose two.) 

A. RIB 

B. VSS 

C. FIB 

D. HSRP 

Answer: A,C 


Q83. Which IPv4 multicast technical component measure provides architectural security? 

A. IGMP max groups 

B. access lists 

C. scoped addresses 

D. state limit 

Answer: C 


Q84. In which multicast configuration is MSDP most useful? 

A. interdomain 

B. intradomain 

C. data center 

D. campus 

Answer: A 


Q85. Which protocol is used in an in-band network and why? 

A. UDP, because it is connectionless 

B. SSH, because the username and password are encrypted 

C. Telnet, because the username and password are sent in clear 

D. MSDP, because it uses TCP as its transport protocol 

Answer: B 


Q86. Which type of application traffic typically requires prioritization across networks and may use a DSCP value of 34 (AF41)? 

A. voice 

B. interactive video 

C. call signaling 

D. routing 

E. streaming video 

F. network management 

Answer: B 


Q87. Which technology is an example of the need for a designer to clearly define features and desired performance when designing advanced WAN services with a service provider? 

A. FHRP to remote branches 

B. Layer 3 MPLS VPNs secure routing 

C. Control protocols (for example Spanning Tree Protocol) for a Layer 3 MPLS service 

D. Intrusion prevention, QoS, and stateful firewall support network wide 

Answer: B 


Q88. What are three primary components in IS-IS fast convergence? (Choose three.) 

A. event propagation 

B. LSP flooding 

C. fast hellos 

D. matching MTUs 

E. updating RIB and FIB 

F. SPF calculation 

Answer: A,E,F 


Q89. Which protocol is best when there are circuit connections with two different ISPs in a multihoming scenario? 

A. VRRP 

B. BGP 

C. IPsec 

D. SSL 

Answer: B 


Q90. Support of vPC on the Cisco Nexus 5000 access switch enables various new design options for the data center Access layer, including which of the following? 

A. The vPC peer link is not required for Access layer control traffic, and can instead be used to span VLANs across the vPC access switches 

B. A single switch can associate per-interface with more than one vPC domain 

C. vPC can be used on both sides of the MEC, allowing a unique 16-link EtherChannel to be built between the access and aggregation switches 

D. Allows an EtherChannel between a server and a access switch while still maintaining the level of availability that is associated with dual-homing a server to two different access switches 

Answer: C