思科认证640-802模拟试卷21 - 众享搜题网

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Refer to the exhibit． Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? [*] 255．255．255．0 255．255．254．0 255．255．252．0 255．255．248．0

Refer to the exhibit． What is the most appropriate summarization for these routes? [*] 10．0．0．0 /21 10．0．0．0 /22 10．0．0．0 /23 10．0．0．0 /24

What is the difference between a CSU/DSU and a modem? A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line． A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line． A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line． A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line．

Which command enables IPv6 forwarding on a cisco router? ipv6 host ipv6 unicast-routing ipv6 local ipv6 neighbor

Which command encrypts all plaintext passwords? Router(config)#password-encryption Router(config)#service password-encryption Router#service password-encryption Router# password-encryption

Given an IP address 172．16．28．252 with a subnet mask of 255．255．240．0, what is the correct network addres? 172．16．16．0 172．16．24．0 172．16．0．0 172．16．28．0

Which IPv6 address is the equivalent of the IPv4 interface loopback address 127．0．0．1? ::1 :: 2000::/3 0::/10

Which parameter or parameters are used to calculate OSPF cost in cisco routers? Bandwidth,Delay,and MTU Bandwidth Bandwidth and MTU Bandwidth , MTU,Reliability,Delay,and Load

When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state? exstart state>exchange state>loading state>full state exstart state>full state>loading state>exchange state Loading state>exchange state>full state>exstart state exstart state>loading state>exchange state>full state

Which protocol can cause overload on a CPU of a managed device? Netflow WCCP IP SLA SNMP

Which one of these is a valid HSRP Virtual Mac Address? 0000．0C07．AC15 0000．5E00．01A3 0007．B400．AE01 0007．5E00．B301

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the max number of subnets．Which network address and subnet mask meet this requirement? 192．168．252．8 255．255．255．248 192．168．252．8 255．255．255．252 192．168．252．16 255．255．255．240 192．168．252．0 255．255．255．252 192．168．252．16 255．255．255．252

You are working in a data center environment and are assigned the address range 10．188．31．0/23．You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each．Which IP address range meets these requirements? 10．188．31．0/27 10．188．31．0/26 10．188．31．0/29 10．188．31．0/28 10．188．31．0/25

The network administrator needs to address seven LANs． RIP version 1 is the only routing protocol in use on the network and subnet 0 is not being used． What is the maximum number of usable IP addresses that can be supported on each LAN if the organization is using one class C address block? 8 6 30 32 14

In a switched environment, what does the IEEE 802．1Q standard describe? the operation of VTP a method of VLAN trunking an approach to wireless LAN communication the process for root bridge selection VLAN pruning

What is a global command? a command that is set once and affects the entire router a command that is implemented in all foreign and domestic IOS versions a command that is universal in application and supports all protocols a command that is available in every release of IOS, regardless of the version or deployment status a command that can be entered in any configuration mode

Which two are features of IPv6? multicast broadcast allcast podcast anycast

Which two are advantages of static routing when compared to dynamic routing? Security increases because only the network administrator may change the routing tables． Configuration complexity decreases as network size increases． Routing updates are automatically sent to neighbors． Route summarization iscompued automatically by the router． Routing traffic load is reduced when used in stub network links

A network administrator needs to configure port security on a switch．which two statements are true? The network administrator can apply port security to dynamic access ports The network administrator can configure static secure or sticky secure mac addresses in the voice vlan． The sticky learning feature allows the addition of dynamically learned addresses to the running configuration． The network administrator can apply port security to EtherChannels． When dynamic mac address learning is enabled on an interface,the switch can learn new addresses,up to the maximum defined．

What are three features of the IPV6 protocol? complicated header plug-and-play no broadcasts checksums autoconfiguration

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