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السؤال #1
Which of the description about IBGP neighbors and EBGP neighbors is wrong?
A. If two peers exchanging BGP packets belong to different autonomous systems, then these two peers are EBGP peers
B. If two peers exchanging BGP packets belong to the same autonomous system, then these two peers are IBGP peers
C. IBGP peers must be directly connected physicallycorrect
D. Two routers running BGP must have IP connectivity to establish a TCP session
عرض الإجابة
اجابة صحيحة: C
السؤال #2
Which of the following descriptions about configuring roaming groups is wrong?
A. After the AC is enabled with the Master Controller function, it joins the roaming group by default and can manage other ACscorrect
B. Master Controller is a logical role that can be assumed by any common entity AC
C. Member ACs need to designate an AC as their own Master Controller
D. The Master Controller manages each AC through the CAPWAP tunnel
عرض الإجابة
اجابة صحيحة: A
السؤال #3
As shown in the figure, data traffic from a STA is forwarded by the HAP to the upper-layer network in direct forwarding mode before roaming, and the HAP is configured as the home agent. What is the flow direction of data traffic after Layer 3 roaming?
A. TA -> FAP -> FAC -> HAC -> HAP -> Upper-layer network
B. TA -> FAP -> FAC -> HAC -> HAP -> HAC -> Upper-layer network
C. TA -> FAP -> FAC -> HAC -> Upper-layer network
D. TA -> FAP -> FAC -> Upper-layer network
عرض الإجابة
اجابة صحيحة: A
السؤال #4
A switch runs the RSTP protocol, and its related configuration information is shown in the figure. According to the command configuration, please point out that for Instance 1, the role of the switch is:
A. Root switchcorrect
B. Non-root switch
C. Switch
D. Can't judge
عرض الإجابة
اجابة صحيحة: A
السؤال #5
Which of the following does not include the advantages of address translation technology?
A. Address translation allows internal network users (private IP addresses) to easily access the Internet
B. Address translation can shield users on the internal network and improve the security of the internal network
C. Address translation can enable many hosts in the internal office network to share a P address for accessing the Internet
D. Address translation can handle the case of IP header encryptioncorrect
عرض الإجابة
اجابة صحيحة: D
السؤال #6
Regarding the special area of ??OSPF, the wrong description is:
A. Totally Stub Area allows the ABR to advertise the default three-type LSA, but does not accept five-type LSA and refined three-type LSA
B. The difference between the NSSA Area and the Stub area is that this area allows the introduction of external routes of the autonomous system, and the ABR issues an LSA7 advertisement to this areacorrect
C. The difference between the Stub Area and the Totally stub area is that the Stub area allows fine-grained routing information between areas
D. The difference between the Totally Stub area and the NSSA area is that the Totally Stub area does not accept inter-domain routing information
عرض الإجابة
اجابة صحيحة: B
السؤال #7
A switch runs MSTP. The configuration is shown in the figure . What is the role of this switch in MSTI 1?
A. Uncertaincorrect
B. Root switch
C. Non-root switch
D. Secondary root switch
عرض الإجابة
اجابة صحيحة: A
السؤال #8
When a stateful inspection firewall forwards subsequent data packets (not the first packet), which of the following is mainly based on?
A. Route table
B. OFIB table
C. MAC address table
D. Session tablecorrect
عرض الإجابة
اجابة صحيحة: D
السؤال #9
The BGPAS_PATH attribute is an optional transition attribute.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #10
Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?
A. 802
B. 802
C. 802
D. 802
عرض الإجابة
اجابة صحيحة: A
السؤال #11
Which of the following is not the main function of NDP?
A. Path MTU Discoverycorrect
B. Neighbor Status Tracking
C. Duplicate address detection
D. Address
عرض الإجابة
اجابة صحيحة: A
السؤال #12
As shown in the figure, in the network running the RSTP protocol, the original root port of SWC fails and the port is in the Down state. At this time, which of the following processes will the network go through to achieve stability?
A. The standby port on the SWC becomes the new root port and enters the Forwarding state after going through the Learning state
B. SWC re-elects the root port and directly enters the Forwarding state
C. The standby port on the SWC becomes the new root port and directly enters the Forwarding statecorrect
D. SWC re-elects the root port and enters the Forwarding state after Learning
عرض الإجابة
اجابة صحيحة: C
السؤال #13
Which of the following tools cannot be directly referenced by the apply clause of a route-policy?
A. IP-Prefixcorrect
B. tag
C. community
D. origin
عرض الإجابة
اجابة صحيحة: A
السؤال #14
ON a stateful inspection Firewall where there is no session table, when the status detection mechanism is enabled and the second packet (CYN+ACK) of 3-way hadshakes reaches the firewall . Which of the following statements is true?
A. If the firewall security policy permits packets to pass, the session table is created
B. By default, when status detection is disabled and the permit policy is configured packets can pass
C. Packets must pass the firewall, and a session table is established
D. If the firewall security policy permits packets to pass, the packets can pass the firewall
عرض الإجابة
اجابة صحيحة: A
السؤال #15
In the IS-IS broadcast network, which multicast MAC address does the Level-1 router use as the destination address for sending IIH?
A. 0180-c200-0000
B. 0180-c200-0015
C. 0100-5E00-0001
D. 0180-c200-0014correct
عرض الإجابة
اجابة صحيحة: D
السؤال #16
What is the minimum total length of the address in IS-IS Byte?
A. 2
B. 8
C. 20correct
D. 16
عرض الإجابة
اجابة صحيحة: C
السؤال #17
Which of the following statements regarding different LSA types is false?
A. LS Update packets contain complete LSA information
B. LS Ack packets contain complete LSA information
C. LS Request packets contain only LS Type, LS ID, and Advertising Rooter
D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number
عرض الإجابة
اجابة صحيحة: B
السؤال #18
What is the default sending interval of BFD packets?
A. 00ms
B. 000ms
C. 0s
D. s
عرض الإجابة
اجابة صحيحة: A
السؤال #19
On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import-route command is run on R1. After the network converges, the route to the server at 192.168.1.0/24 is queried on R2. Which of the following is the cost of this route?
A. A2
B. B4
C. C3
D. D1
عرض الإجابة
اجابة صحيحة: C
السؤال #20
ACL command ac1 [number] ac1-number [ match-order {autol config}], where ac1-numnbe is used to specify the number of the access control list, and the value range of ac1-number of the basic access control list is ().
A. 1000~3999
B. 0~1000
C. 3000~3999
D. 2000 ~2999correct
عرض الإجابة
اجابة صحيحة: D
السؤال #21
Which of the following statements regarding OSPF route summarization is false?
A. OSPF supports two route summarization modes: ABR summarization and ASBR summarization
B. Any router in OSPF can summarize routes
C. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas
D. Route summarization can reduce routing information, decrease the routing table size, and improve router performance
عرض الإجابة
اجابة صحيحة: D
السؤال #22
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows advertising routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #23
Which of the following description about OSPF is correct?
A. OSPF LSA is regularly updated every 30 minutescorrect
B. OSPF floods an LSU every 5s
C. OSPF uses the Bellman-Ford algorithm, and each router runs the algorithm independently
D. OSPF itself has no confirmation mechanism, so 0SPP relies on the lower layer protocol, namely TCP confirmation
عرض الإجابة
اجابة صحيحة: A
السؤال #24
Which of the following description of how to establish a BFD session is wrong?
A. BFD sessions can only be established dynamicallycorrect
B. Static configuration of the BFD session refers to configuring the BFD session parameters through the command line, including local identifiers and remote identifiers, etc
C. When dynamically establishing a BFD session, dynamically assign a local identifier
D. The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area
عرض الإجابة
اجابة صحيحة: A
السؤال #25
OpenSent
A. 3-1-2-5-4
B. 1-3-5-2-4
C. 3-5-1-2-4
D. 3-1-5-2-4correct
عرض الإجابة
اجابة صحيحة: D
السؤال #26
Which of the following scenarios is the SD-WAN solution suitable for?
A. Enterprise branch interconnectioncorrect
B. Internal interconnection of enterprise data center network
C. Enterprise campus wireless network deployment
عرض الإجابة
اجابة صحيحة: A
السؤال #27
In inter-domain packet filtering, which of the following options belongs to the outbound direction?
A. trust-untrustcorrect
B. untrust-dmz
C. trust-local
D. untrust-trust
عرض الإجابة
اجابة صحيحة: A
السؤال #28
Which of the following types does IS-IS PDU include? (Multiple choice)
A. CSNP
B. LSP
C. IIH
D. PSNP
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #29
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
A. TRUEcorrect
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #30
Among the routing policy tools commonly used in BGP, the one that can be used to match a specific AS_path is:
A. filter-policy
B. ip-prefix
C. ip as-path-filercorrect
D. community-filter
عرض الإجابة
اجابة صحيحة: C

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