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There is a network composed by router R1, router R2, router R3 and router R4. The four routers are interconnected by a LAN network. All four routers deploy the basic OSPF. When you are executing the command "display ospf peer" on Router 2, you will find the status between Router2 and Router3 is "2-way".
So from this output, what conclusion can you draw? (Multiple choice)
A. the router R2 is DR or BDR
B. router R3 is neither DR, nor the BDR
C. router did not form a full adjacency relationship between R2 and R3 router
D. router R2 is not DR
E. the router R4 is DR
Answer: BCD
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
Which description about OSPF area is correct?
A. All types OSPF areas support routes brought in.
B. When the route is introduced into OSPF stub area, the route entries will turn to Class 5 LSA
C. OSPF stub area allows route redistribution, but totally stub area does not allow importing routes
D. When the route is introduced into the OSPF complete stub area, the route entries will turn to Class five LSA
E. When the route is introduced into the OSPF complete stub area, the route entries will turn to Class Seven LSA
Answer: E
What are the key component of NAC?
A. communication agent
B. NAC equipment
C. access terminal
D. policy server
Answer: ABD
RD is used to distinguish same IP address between different VPN.
RD contains how many bit?
A. 16
B. 32
C. 64
D. 128
Answer: C
Which type of prefix will router running BGP circular to their IBGP neighbor (assuming that the router is not configured as a route reflector)?
A. prefix is learned through other BGP neighbors, or prefix is introduced by the local network or routing learned
B. the prefix exists in the routing table
C. prefix is learned through EBGP neighbors, or prefix is introduced by the local network or routing learned
D. prefix is learned through EBGP neighbors, or learn the prefix from the RR
E. prefix is learned through other IBGP neighbors, or prefix is learned from EBGP neighbor, or the prefix is introduced by routing learned
E. prefixe learned through other IBGP neighbors, or learn the prefix from the RR
Answer: C
If there is a switch running STP, and now the switch G0/0/17 interface and G0/0/18 interface are connected by a cable, then on the scenario described below, which is correct?
A. G0/0/18 interface will enter the discarding state
B. Both G0/0/17 interface and G0 0/18 interface will enter the forwarding state
C. G0/0/17 interface will enter the blocking state
D. Both G0/0/17 interface and G0/0/18 interface will enter the discarding state.
E. G0/0/18 interface will continue change back and forth in listening state and learning state
F. G0/0/17 interface will always remain in the learning state
Answer: A
In RIPng network, hope the router can publish a default route to the entire network, which of the following configuration is True?
A. [Huawei] ripng 1
[Huawei-ripng-1] import-route static cost 2
[Huawei-ripng-1] quit
[Huawei] ipv6 route-static:: 0 NULL0
B. [Huawei] interface GigabitEthernet0/0/1
[Huawei-GigabitEthernet0/0/1] ipv6 enable
[Huawei-GigabitEthernet0/0/1] ipv6 address 2001 £ยบ 12::1/64
[Huawei-GigabitEthernet0/0/1] ripng 1 enable
[Huawei-GigabitEthernet0/0/1] ripng default-route originate
[Huawei-GigabitEthernet0/0/1] quit
C. [Huawei] ripng 1
[Huawei-ripng-1] import-route static cost 2
[Huawei-ripng-1] quit
[Huawei] ipv6 route-static:: 0 2001:19::9
D. [Huawei] ripng 1
[Huawei-ripng-1] ripng default-route originate
[Huawei-ripng-1] quit
Answer: B
As shown, in the configuration of router R3 set ISIS overload bit , which of the following statement is True? (Multiple choice)
A. R3 starts overload state, R1 and R2 will not calculate the R3 generated LSP in SPF tree.
B. R3 LSP will not be able to spread to R1 and R2.
C. R3 direct route because of the overload bit set will be ignored by R1 and R2.
D. R3 imported routes through import-route will not be able to publish.
E. when router memory is insufficient, the system will automatically set the overload flag bit in sent LSP packets, it is irrelevant to whether the user configure the set-overload command.
Answer: DE
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
As shown in figure, ISIS neighbor relationship between R1 and R2 just created, which of the following statement about database synchronization process between R1 and R2 is True?
A. the packets R1 sent to R2 are PSNP packets.
B. the packets R1 sent to R2 are PSNP packets.
C. the packets R1 sent to R2 are LSP packets.
D. the packets R1 sent to R2 are Hello packets.
Answer: B
You are now in a LAN troubleshoot, and you suspect that the error was due to operating mode mismatch.
Which switch interface error indicates the 10/100/1000 IEEE Gigabit interface operating mode mismatch? (Multiple choice)
A. Alignment Error
B. FCS Error
C. Multiple Collisions
D. Ultra-small Frame
E. Excessive Conflict
F. Lag Conflict
Answer: ABDEF
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
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
Which timer of the STP timer does stipulate the frequency that the root bridge sends configuration BPDU?
A. STP timer
B. Hold timer
C. Hello timer
D. MaxAge timer
E. Forward Delay timer
Answer: C
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