多项选择题Which two data intergrity algorithms are commonly used in VPN solutions?()

A.HMAC-MD5
B.RSA
C.HMAC-SHA-1
D.DH1
E.DH2


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1.多项选择题Which are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links?()

A.reduced cost
B.bette rthroughput
C.increased security
D.scalability
E.reduced latency
F.broadband incompatibility

2.多项选择题Which three statements about EIGRP are true?()

A. EIGRP converges fast RIP because of DUAL and backup routes that are stored in the topology table.
B. EIGRP uses a hello protocol to establish neighbor relationships
C. EIGRP uses split horizon and reverse poisoning to avoid routing loops.
D. EIGRP uses periodic updates to exchange routing information
E. EIGRP allows routers of different manufacturers to interoperate
F. EIGRP supports VLSM and authentication for routing updates.
G. EIGRP use a broadcast address to send routing information.

3.多项选择题Which two statements about using the CHAP authentication mechanism in a PPP link are true?()

A. CHAP uses a two-way handshake
B. CHAP authentication periodically occurs after link establishment
C. CHAP has no protection from playback attacks
D. CHAP authentication is performed only upon link establishment
E. CHAP uses a three-way handshake
F. CHAP authentication passwords are sent in plaintext

4.多项选择题the network administrator has been asked to give reasons for moving from ipv4 to ipv6. what are two valid reasons for adopting ipv6 over ipv4?()

A. telnet access does not require a password
B. nat
C. no broadcast
D. chanage of destination address in the ipv6 header
E. chanage of source address in the ipv6 header
F. autoconfiguration

5.多项选择题Which three approaches can be used while migrating from an IPV4 addressing scheme to an IPV6 scheme.()

A. statically map IPV4 address to IPV6 addresses
B. configuration IPv4 tunnels between IPV6 islands
C. use DHCPv6 to map IPV4 addresses to IPV6 addresses
D. use proxying and translation to translate IPV6 packets into IPV4 packets
E. configure IPV6 directly
F. enable dual-stack routing

6.多项选择题Which two subnetworks would be included in the summarized address of 172.31.80.0 /20?()

A.172.31.17.4/30
B.172.31.51.16/30
C.172.31.64.0/18
D.172.31.80.0/22
E.172.31.92.0/22
F.172.31.192.0/18

7.多项选择题What two statistics appear in show frame-relay map output?()

A. The number of FECN packets that are received by the router
B. The number of BECN packets that are received by the router
C. The ip address of the local router
D. The value of the local DLCI
E. The status of the PVC that is configured on the router

8.多项选择题It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.Which of the following processes are required to accomplish this task?()

A. configure static frame relay map entries for each subinterface network.
B. remove the ip address from the physical interface
C. create the virtual interfaces with the interface command
D. configure each subinterface with its own IP address
E. disable split horizon to prevent routing loops between the subinterface networks
F. encapsulate the physical interface with multipoint PPP

9.多项选择题Which two privileged mode cisco ios commands can be used to determine a cisco router chassis serial number?()

A.show inventory
B.show flash:filesys
C.dirflash:include chassis
D.show diag
E.show controllers

10.多项选择题Which two statements are characteristics of a distance vector routing protocol?()

A. RIP is an example of distance vector routing protocols.
B. Updates are periodic and include the entire routing table.
C. Routing updates are sent only after topology changes
D. The protocol can be useful in hub-and-spoke and hierarchical networks.
E. Convergence is usually faster than with link state protocols
F. Each router has its own view of the topology

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What is the default administrative distance of OSPF?()

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?()

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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?()

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At which layer of the OSI model is RSTP used to prevent loops?()

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Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?()

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Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?()

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How are VTP advertisements delivered to switches across the network?()

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Which pairing reflects a correct protocol-and-metric relationship?()

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Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?()

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