Share some HCIE-R&S H12-261-ENU exam questions and answers below.
Recently the company network often attacked by ARP, in order to curb ARP attacks, which of the following technique can we use? (Multiple choice)
A. DAI
B. DHCP snooping
C. uRPF
D. static MAC address binding
E. Port isolation
Answer: ABE
The following description of ASM model and SSM model, which is right?(please select three correct answer)
A. in SSM model, the receiver can know in advance the position of the multicast source
B. in ASM model, the receiver will not be able to know in advance the position of the multicast source
C. for the receiver, SSM model is better than ASM model
D. ASM model and SSM model use IP multicast address range is different
Answer: ABD
As shown below, which routes will R2 learn?
A. R2 can learn R1 all routes .
B. R2 can learn 10.1.1.0/24 router.
C. R2 can learn 10.1.2.0/24 and 10.1.3.0/24 two routes.
D. R2 can receive R1 LSP, but can not be added to the routing table.
Answer: A
To check if figure below about the process of NDP analysis link-layer address is True.
A. True
B. False
Answer: B
Which description about ISIS extension feature is true? (Multiple choice)
A. ISIS can choose whether verification to received SNP and LSP data packets.
B. When the amount of information which ISIS will publish in link-state protocol data packet PDU is too large, ISIS router will generate multiple LSP fragment, to carry more ISIS information.
C. After enabled router LSP fragment extension function, don't need to restart ISIS process, you can use this feature.
D. If there are other vendors equipment on the network and does not support the LSP fragment function, must configure the fragment extension mode to Mode-1, or the other vendor's device can't identify the message.
Answer: ABD
There are two gateway routers providing connecting external networks service for a LAN network's Host. Which kind of technology should be used on the two redundant routers so that make them as the LAN network's host's default gateway?
A. DHCP
B. RIP
C. OSPF
D. VRRP
E. BOOTP
Answer: D
Which of the following description about IBGP neighbor EBGP neighbor is true? (Multiple choice)
A. router will sent the BGP updates learning from its IBGP neighbor to their other IBGP neighbor and EBGP neighbor
B. router will sent the BGP updates learning from its EBGP neighbor to their other IBGP neighbor and EBGP neighbor
C. IBGP neighbor must be directly connected. Otherwise, IBGP-Multi-hop must be configured
D. EBGP neighbor must be directly connected. Otherwise, EBGP-Multi-hop must be configured
E. IBGP neighbor can through Loopback Interface to establish neighbor relationship
F. EBGP neighbor must through direct physical interface address to establish neighbor relationship
Answer: BDE
Here on the OSI reference model, which description about the sixth layer functional is corret?
A. Providing a common data compression and encryption scheme
B. Establishing, maintaining and terminating communication sessions
C. Synchronous Communication
D. Determining the availability of resources
Answer: A
You're troubleshooting frame relay interface serial 0 on HW router. When the interface is up and quickly enters the down state. You use the command display interface, see LMI status message of interface serial has been sent but not received.
So what causes the problem occur?
A. Receive too much error message on the link
B. Frame Relay Imi-type configuration error
C. Subinterface number exceeds the limits of the IDB
D. DCD configuration errors on the frame relay line
E. Ends of keepalive configuration error
Answer: B
What field of IPv6 head is similar with the "Type of Service" field of IPv4 head?
A. Flow Label
B. Version
C. Next Header
D. Traffic Class
Answer: D
Which of the following is only used for BGP to choose routing? (Multiple choice)
A. ACL
B. IP-prefix
C. AS-path-filter
D. Community-filter
Answer: CD
In order to improve the security of ISIS protocol, you can configure the authentication in ISIS protocol, there are three authentication methods, namely the interface certification, domain authentication and routing domain authentication.
A. True
B. False
Answer: A
What are the key component of NAC?
A. communication agent
B. NAC equipment
C. access terminal
D. policy server
Answer: ABD
You want to set the DSCP value of VoIP traffic in HW network device as EF.
According to distinguish service model RFC, flow mark EF should be set to:
A. DSCP is set as decimal 36
B. IP ToS is set as 0xEF
C. IP Experimental ECN
D. DSCP is set as decimal 5
E. Bit Stream 101110
Answer: E
A running OSPF router is connected to Area 0 and Area 1. You will configure Area 1 to stub area.
which kind does LSA only in the Area 1 internal operate?
A. Class 7 LSA
B. Class 1 LSA and Class 2 LSA
C. Class 1 LSA,Class 2 LSA and Class 5 LSA
D. Class 3 LSA and Class 4 LSA
E. Class 1 LSA, Class 2 LSA and Class 3 LSA
Answer: E
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