H12-831 Online Practice Questions and Answers

As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?

A. 100

B. 150

C. 50

D. 200

Configured on an interface: isis timer hello 5 level-2, which of the following statements is correct?

A. the interfaceLevel-2ofhelloThe packet sending interval is5s

B. the interfaceLevel-1andLeva 1-2ofhell. The packet sending interval is3s

C. the interfaceLevel-2ofCSNPThe packet sending interval

Regarding MP-BGP, which of the following descriptions is wrong?

A. PEandCEpass betweenBGPWhen interactive routing, you need toCEup for eachVPNinstance creationBGPprocess

B. MP-BGPthe message type,VPNv4route advertisement strategy andBGP-4same

C. MP-BGPneeds to beVPNv4route assignment private network label

D. MP-BGPpass throughMP_REA, CH_NLRIandMP_UREA, CH_NLRItwo properties to advertiseVPNv4routing

Please pair the following DHCP attack types with corresponding explanations.

A. DHCPstarvation attack-3 DHCPPhishing attack man-in-the-middle attack-2 DHCPPacket flood attack-4

B. DHCPstarvation attack-2 DHCPPhishing attack-3man-in-the-middle attack-1 DHCPPacket flood attack-4

C. DHCPstarvation attack-1 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-4

D. DHCPstarvation attack-4 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-1

As shown below:

A. R3andR1ofIS-LevelMismatch

B. R3andR1different area codes

C. R3andR1ofIIHAuthentication failed

D. R3andR1ofSystem

The following description of TL in PLSHeader is correct:

A. Limit the LSR

B. Control of upstream equipment for label distribution

C. Similar to the TTL in the IP header, it is used to prevent packet loops

D. To control label distribution

Configure ipv6 preference in IS-IS protocol view. The function of this command is to configure the priority of IPv6 routes generated by IS-Is protocol.

A. True

B. False

The rules of RR advertising routes violate the rules of IBGP split horizon, so it may cause loops in the AS road. Which routing attributes does RR use to prevent loops?

A. Cluster List

B. Originator ID

C. Nexthop

D. AS-PATH

There is the concept of forwarding equivalence class FEC in MPLS. The following description is wrong:

A. MPLSGrouping packets with the same forwarding processing method is calledFEC

B. a forwarding equivalence classFECA unique label value is assigned on all routers

C. sameFECgrouped inMPLSThere will be different processing in the network

D. FECThe division is very flexible. Can be the source address, and the address, source port, destination port, protocol type or VPNEqual to any combination of division basis

In the process of viewing the debug output through the SSH terminal, a lot of information pops up. Which of the following operations can make the Moni tor terminal no longer pop up debug messages?

A. exit currentMonitorinterface redesignSSHLog in to the device to open a new oneMonitorinterface

B. Open Notepad and enterundo debugging a 11,Copy the command line and paste it intoMonitorinterface

C. Open Notepad$SLIAundo terminal monitor,Copy the command line and paste it intoMonitorinterface

D. open notepad inputundo terminal debugging,Copy the command line and paste it intoMonitorinterface