SNMPv3 authorizes management operations only by configured users and encrypts SNMP messages. Which authentication protocols does Cisco NX-OS Software use for SNMPv3？（）

单项选择题InaCiscoNexus7000platformconfiguredwithGLBP，whichGLBPtimercanbetunedtopreventunnecessaryGLBPstatechangesduringaswitchoverorISSU？（）

A. GLBP redirect timer
B. GLBP forwarder pre-empt delay minimum timer
C. GLBP hold timer
D. GLBP pre-empt delay minimum timer
E. GLBP extended hold timer
F. GLBP nonstop forwarding timer

单项选择题Bydefault，whattypeofSSHserverkeyisgeneratedbyCiscoNX-OSSoftware？（）

A. DSA key generated with 512 bits
B. RSA key generated with 768 bits
C. RSA key generated with 1024 bits
D. DSA key generated with 1024 bits
E. RSA key generated with 2048 bits

多项选择题IntheCiscoFabricPathdomain，oneswitchbecomestherootforthemultidestinationtree.CiscoFabricPathswitchescomparewhichthreeparameterstoselecttheroot？（）

A. Root priority
B. System ID
C. Bridge ID
D. Switch ID
E. Port ID
F. Subswitch ID

单项选择题WhereisatypicalrequestintheCiscoUCSXMLAPIplacedinthedatamanagementengine，and，aftertherequestisconfirmed，whatisupdated？（）

A. The request is placed in the transactor queue in FIFO order and the management information tree is updated.
B. The request is placed in the replicator and persistifier and the store is updated.
C. The request is placed in the data management engine and the application gateway is updated. 
D. The request is placed in the buffer queue and the commit buffer queue is updated.

单项选择题On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（）  switch# config terminal  switch（config）# mac address-table learning-mode conversational vlan 1-10  switch（config）#

A. Enable conversational learning on FabricPath vlans 1-10 for F-Series module
B. Enable FabricPath protocol on VLANs 1–10
C. No need for this command as conversational learning is enabled by default for all VLANs.
D. Enable conversational learning on Classical Ethernet VLAN for F-Series module