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NEW QUESTION 38
Regarding MP-BGP, which of the following descriptions is wrong?
- A. When the PE and CE exchange routes through BGP, a BGP process needs to be created on the CE for each VPN instance
- B. MP-BGP needs to assign private network labels to VPNV4 routes
- C. MP-BGP's packet types and VPNv4 route advertisement policies are the same as BGP-4
- D. MP-BGP advertises VPNv4 routes through MP REACH NLRI and MP UREACH NLRI attributes
Answer: A
NEW QUESTION 39
Which of the following BGP routing attributes cannot control BGP routing?
- A. AS Path
- B. Community
- C. MED
- D. Originator ID
Answer: B
NEW QUESTION 40
In addition to the virtual connection, what type of IPv6 address is the source IPv6 address of the Hello packet of OSPFv3?
- A. Link-local address
- B. Global Unicast Address
- C. IPv6 anycast address
- D. Unique local address
Answer: A
NEW QUESTION 41
If faced with a complex network failure, and after evaluation, it is considered that the troubleshooting cannot be completed in a short time, and the user urgently needs to restore the availability of the network, which of the following approach is correct?
- A. Directly build an alternative network environment without notifying customers
- B. Communicate with users whether it is possible to skip the faulty node and build an alternative network environment
- C. Tell the user that this is not possible
- D. Always try to troubleshoot without informing the user of the current difficulty of the failure
Answer: B
NEW QUESTION 42
MTBF, MRRT and other indicators are used to describe which of the characteristics of the network?
- A. Extensibility
- B. Availability
- C. Economical
- D. Security
Answer: B
NEW QUESTION 43
Sort by the cutover execution steps.
- A. Install new equipment and configure
- B. Cut over business from old equipment to new equipment
- C. Perform service checks on new equipment
- D. After ensuring that the business of the new equipment runs normally, the old equipment goes offline
- E. After the cutover is completed, observe the status of the network on the new device
Answer: A,B,C,D,E
NEW QUESTION 44
R1, R2, R3, and R4 belong to OSPF area 0, and the cost of the link is shown in the figure.
Loopback0 of R1, R2, R3, and R4 is advertised into OSPF. R1, R2, R3, and R4 use Loopback0 as the connection interface to establish an IBGP peer relationship. R1, R2, and R3 are clients of R4. The directly connected network segment 172.20.1.4/32 of R4 is advertised into BGP. Regarding the traffic trend of R1 accessing 172.20.1.4/32, which of the following analysis is correct? (Multiple choice)
- A. During the two processes of power failure and startup of R3, there will be packet loss
- B. The preferred route is R1-R2-R4
- C. The preferred route is R1-R3-R4
- D. If R3 is configured with Stub
Answer: C,D
NEW QUESTION 45
The network administrator A wants to use the IP Prefix List to match a specific route entry. Which of the following routes will be matched by the IP Prefix List in the figure? (Multiple choice)
- A. 10.0.2.0/24
- B. 10.0.0.0/24
- C. 10.0.0.1/30
- D. 10.0.1.0/24
Answer: B,C
NEW QUESTION 46
The information collection before the cutover can be used to judge whether the services before and after the cutover are normal.
- A. True
- B. False
Answer: A
NEW QUESTION 47
MACsec can provide users with secure MAC layer data transmission and reception services.
Which of the following is not a service provided by MACsec?
- A. User Data Encryption
- B. Controllability Check
- C. Data source authenticity verification
- D. Integrity Check
Answer: B
NEW QUESTION 48
ping-a X-c Y-s z-vpn-instance M 10.5.16.2, what is the meaning of this command? (Multiple choice)
- A. The ping packet belongs to VPN instance M
- B. The source IFP address of the ping packet is X
- C. The ping sends Y ICMP requests
- D. The ICMP request of the ping, the packet size is Z (excluding IP and ICMP headers)
Answer: A,B,C,D
NEW QUESTION 49
What can we infer from this graph? (Multiple choice)
- A. The system-ID of R1 is ee8c.a0c2.bafl
- B. R1 has both level-1 and level-2 link status information
- C. R1 only has level-2 link state information
- D. In a level-2 network, there are a total of 8 routers
Answer: A,C
NEW QUESTION 50
The classic network forwarding method is based on routing table forwarding. The forwarding method of OpenFlow switches is based on flow table forwarding. For these two forwarding methods, which of the following statements are correct? (Multiple choice)
- A. The matching method of the flow table is to match the MAC address and IP address of the traffic at the same time.
- B. The routing table is fixed length. A device can only have one public routing table.
- C. The matching method of the routing table is to match the route of the destination network segment with the longest mask.
- D. The flow table is variable length. A network device can only have one flow table.
Answer: B,C
NEW QUESTION 51
Which of the following reasons may cause a BGP neighbor relationship failure? (Multiple choice)
- A. The loopback interface is used to establish EBGP neighbors without peer ebgp-max-hop configured
- B. ACL filters TCP port 179
- C. Conflicting router IDs of neighbors
- D. The peer connect-interface is not configured when establishing neighbors through the loopback port
Answer: A,B,C,D
NEW QUESTION 52
Which is wrong with this configuration description?
- A. If there is no SubOption information of Option82 in the DHCP request packet received by GigabitEthemnet0/0/1 interface, the device will generate Option82
- B. Enabling DHCP Snooping configuration can be used to prevent DHCP Server bogus attacks
- C. Enable DHCP Snooping configuration can be used to prevent ARP spoofing attacks
- D. Configure the GigabitEthernet0/0/1 interface as a trusted interface
Answer: A
NEW QUESTION 53
In OSPFv3, what is the flooding range of the LSA in the entire autonomous system?
- A. Inter-Area-Prefix-LSA
- B. As-external-LSA
- C. Intra-Area-Prefix-LSA
- D. Link-LSA
Answer: B
NEW QUESTION 54
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