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642-997 Exam Questions - Online Test


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Q1. Which statement about electronic programmable logic device image upgrades is true? 

A. EPLD and ISSU image upgrades are nondisruptive. 

B. An EPLD upgrade must be performed during an ISSU system or kickstart upgrade. 

C. Whether the module being upgraded is online or offline, only the EPLD images that have different current and new versions are upgraded. 

D. You can execute an upgrade or downgrade only from the active supervisor module. 

Answer:

Q2. Which Cisco Nexus feature is best managed with DCNM-SAN? 

A. VSS 

B. domain parameters 

C. virtual switches 

D. AAA 

Answer:

Q3. Which two security features are only supported on the Cisco Nexus 7000 Series Switches? (Choose two.) 

A. IP source guard 

B. traffic storm control 

C. CoPP 

D. DHCP snooping 

E. Dynamic ARP Inspection 

F. NAC 

Answer: BF 

Q4. DRAG DROP 

Answer:  

Q5. Which function does the graceful restart feature allow a Cisco Nexus 7000 Series router to perform? 

A. Perform a rapid route convergence. 

B. Initialize a standby supervisor transparently when one is present. 

C. Remain in the data forwarding path through a process restart. 

D. Maintain a management connection throughout a router restart. 

Answer:

Q6. What is the Overlay Transport Virtualization site VLAN used for? 

A. to allow the join interfaces at different sites to communicate 

B. to detect devices at the site that are not capable of OTV 

C. to allow multiple site AEDs to communicate with each other 

D. to detect other OTV edge devices in the site 

Answer:

Q7. Refer to the exhibit. 

 

What is the consequence of configuring peer-gateway on the two vPC peers N7K-1 and N7K-2? 

A. Nothing, this is the standard vPC configuration to make the feature work. 

B. The downstream device detects only one of the vPC peers as its gateway. 

C. The downstream device can use DMAC of N7K-1 on the link to N7K-2, and N7K-2 forwards the packet. 

D. This configuration enables the downstream device to use DHCP to obtain its default gateway. 

Answer:

Q8. By default it will take 10 seconds for authentication to fail due to an unresponsive RADIUS server before a Cisco Nexus series switch reverts to another RADIUS server or local authentication. What is one efficient way to improve the reaction time to a RADIUS server failure? 

A. Decrease the global RADIUS retransmission count to 1. 

B. Decrease the global RADIUS timeout interval to 5 seconds. 

C. Configure the RADIUS retransmission count and timeout interval per server, versus globally. 

D. Configure per server a test idle timer, along with a username and password. 

Answer: