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试卷名称:思科认证640-802模拟试卷22

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单选题

What command instructs the device to timestamp Syslog debug messages in milliseconds?

A．service timestamps log datetime localtime

B．service timestamps debug datetime msec

C．service timestamps debug datetime localtime

D．service timestamps log datetime msec

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What Cisco IOS feature can be enabled to pinpoint an application that is causing slow network performance? SNMP Netflow WCCP IP SLA

What authentication type is used by SNMPv2? HMAC-MD5 HMAC-SHA CBC-DES community strings

Refer to the exhibit． [*] If the router Cisco returns the given output and has not had its router ID set manually, what value will OSPF use as its router ID? 192．168．1．1 172．16．1．1 1．1．1．1 2．2．2．2

What OSPF command, when configured, will include all interfaces into area 0? network 0．0．0．0 255．255．255．255 area 0 network 0．0．0．0 0．0．0．0 area 0 network 255．255．255．255 0．0．0．0 area 0 network all-interfaces area 0

In a GLBP network, who is responsible for the arp request? AVF AVG Active Router Standby Router

What command visualizes the general NetFlow data on the command line? show ip flow export show ip flow top-talkers show ip cache flow show mls sampling show mls netflow ip

Which three statements about HSRP operation are true? The virtual IP address and virtual MA+K44C address are active on the HSRP Master router． The HSRP default timers are a 3 second hello interval and a 10 second dead interval． HSRP supports only clear-text authentication． The HSRP virtual IP address must be on a different subnet than the routers’ interfaces on the same LAN． HSRP supports up to 255 groups per interface, enabling an administrative form of load balancing．

Which three statements about Syslog utilization are true? Utilizing Syslog improves network performance． The Syslog server automatically notifies the network administrator of network problems A Syslog server provides the storage space necessary to store log files without using router disk space． There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages． A Syslog server helps in aggregation of logs and alerts．

What are three reasons to collect Netflow data on a company network? To identify applications causing congestion To authorize user network access To report and alert link up / down instances． To diagnose slow network performance, bandwidth hogs, and bandwidth utilization． To confirm the appropriate amount of bandwidth that has been allocated to each Class of Service．

Which three features are added in SNMPv3 over SNMPv2? Message Integrity Compression Authentication Encryption Error Detection

What is the cause of the Syslog output messages? [*] The EIGRP neighbor on Fa0/1 went down due to a failed link． The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process, causing the adjacency to go down． A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go down． Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down．

What Netflow component can be applied to an interface to track IPv4 traffic? flow monitor flow record flow sampler flow exporter

A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1．On what interface is the IP address configured? the port-channel 1 interface the highest number member interface all member interfaces the lowest number member interface

What is the default Syslog facility level? local4 local5 local6 local7

In GLBP, which router will respond to client ARP requests? The active virtual gateway will reply with one of four possible virtual MAC addresses． All GLBP member routers will reply in round-robin fashion． The active virtual gateway will reply with its own hardware MAC address． The GLBP member routers will reply with one of four possible burned in hardware addresses

What are three values that must be the same within a sequence of packets for Netflow to consider them a network flow? source IP address source MAC address egress interface ingress interface destination IP address

What parameter can be different on ports within an EtherChannel? speed DTP negotiation settings trunk encapsulation duplex

Which statement describes the process ID that is used to run OSPF on a router ? It is locally significant and must be the same throughout an area It is globally significant and is used to represent the AS number It is locally significant and is used to identify an instance of the OSPF database It is globally significant and is used to identify OSPF stub areas

What command instructs the device to timestamp Syslog debug messages in milliseconds? service timestamps log datetime localtime service timestamps debug datetime msec service timestamps debug datetime localtime service timestamps log datetime msec

Which statement describes VRRP object tracking? It monitors traffic flow and link utilization． It ensures the best VRRP router is the virtual router master for the group． It causes traffic to dynamically move to higher bandwidth links It thwarts man-in-the-middle attacks．

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