Practice Free H12-891_V1.0-ENU Exam Online Questions
In the scenario of dynamically establishing a VXLAN tunnel through BGP EVPN, the RT value carried by the BGP EVPN Type2 route is the Export RT value of the corresponding IP VPN instance.
- A . True
- B . False
Which of the following technologies may be used to improve the reliability of the bearer network? (Multiple choice)
- A . PIM-SM
- B . Anycast FRR
- C . Mirror SID
- D . BFD/SBFD
Which of the following description of Local-Preference is correct?
- A . Local-Preference can be propagated across ASs
- B . Local-Preference is a recognized mandatory attribute
- C . The default value of Local-Preference is 0
- D . The default value of Local-Preference is 100
Which of the following descriptions of the authentication protocols used in the Portal authentication process are correct? (Multiple choice)
- A . When the Portal protocol is used as the authentication protocol, the Porta1 server and access device only need to support the Portal protocol and do not need to support the HTTP/HTTPs protocol.
- B . When using HTTP/HTTPS protocol as the authentication protocol, all devices involved in the authentication process do not need to support the Portal protocol.
- C . When the Portal protocol is used as the authentication protocol, the Porta1 server needs to exchange authentication information with the access device, and then the access device sends this information to the authentication server for identity authentication.
- D . When using HTTP/HTTPs protocol as the authentication protocol, the client needs to send authentication information to the access device, and then the access device sends this information to the authentication server for identity authentication.
In the network design scenario of large and medium-sized virtualized campuses, which of the following descriptions about VN design is wrong?
- A . Define security groups and policy control matrix based on user roles and access requirements
- B . Define mutual access policies between VNs based on the policy control matrix
- C . VNs are usually divided according to the geographical location of the campus office
- D . It is necessary to plan the mapping relationship between VLAN and BD
SRv6 completes hop-by-hop forwarding of packets by inserting a routing extension header SRH into IPv6 packets.
Which of the following descriptions about the SRH extension header is wrong?
- A . When the Routing Type field value is 4, it indicates an SRH extension header.
- B . This extension header specifies an explicit path to IPv6 and stores IPv6 Segment List information.
- C . The Segments Left field indicates the number of intermediate nodes that should still be visited before reaching the destination node.
- D . Segment List is the address form of IPv6, indicating the destination IPv6 address of the node that needs to be accessed.
The Network LSA information of a certain router is as shown in the figure. Which items in the following description are correct? (Multiple choice)
- A . The Router ID of this router is 10.0.12.2
- B . The network segment where the router is located is 10.0.12.0/24
- C . This router is a DR
- D . The DR priority of this router is 100
TCP-based FTP download service.
The company’s network administrator often receives complaints that the company’s FTP service downloads are very slow, or sometimes fast or slow.
What items may be causing this problem?
- A . The device has set a traffic speed limit for FTP, and the speed limit is too small.
- B . The video service has a higher priority and occupies the bandwidth of the FTP service.
- C . The device performs PQ scheduling for FTP services and WFQ scheduling for video services, causing the FTP bandwidth to be preempted.
- D . The device uses tail drop technology, causing TCP global synchronization to affect the FTP rate.
In the VXLAN network, which of the following is used to implement traffic access to the VXLAN network and can also be used to communicate with the same subnet within the same VXLAN network?
- A . NVE interface
- B . VXLAN L3 Gateway
- C . VXLAN L2 Gateway
- D . VLANIF interface
As shown in the figure, PE1 enables the SR-MPLS function based on OSPF. Based on this, it can be inferred that the label when PE1 forwards the data packet to 10.0.3.3 is?
- A . 24001
- B . 24004
- C . 24003
- D . 3