Practice Free H12-891_V1.0-ENU Exam Online Questions
Which of the following regular expressions can only match BCP routing entries that first pass through AS300 and then pass through AS200?
- A . ^200 | ^300
- B . _[200 300]_
- C . 200$ | 300$
- D . _(200 300)_
During the SSH algorithm negotiation phase, both parties send SSH messages to each other, and the messages contain lists of multiple algorithms they support.
For the composition of the algorithm list, please sort it in the order of negotiation (that is, which type of algorithm is negotiated first, which type of algorithm is negotiated second, and so on).
The message information of the VLAN configuration delivered by the NETCONF protocol is as follows. Which of the following descriptions is wrong?
- A . <edit-config> indicates that the purpose of this message is to modify, create or delete configuration data.
- B . The <target> tag indicates the configuration library used by the NEICONF message. In this example, it is the startup configuration library.
- C . protocol Vlan xc: operation="merge"> means modifying the existing or non-existing target data in the configuration database. If the target data does not exist, create it. If the target data exists, modify it.
- D . The purpose of this NETCONF message is to create VLAN 10 on the device
The output information of a certain router is as shown in the figure. Which item is wrong in the following description?
- A . The tunnel has the Keepalive check function enabled.
- B . The destination IP address of the tunnel is 10.0.3.3
- C . This tunnel is a GRE tunnel
- D . The keyword verification function is not enabled for this tunnel.
Which of the following descriptions of the HTTP protocol is wrong?
- A . The format of the version field in the starting line of the HTTP request message is: HTTP/<major version number>. <minor version number>
- B . HTTP status code is a three-digit decimal code
- C . The method field in the starting line of the HTTP request message can be "GET", "POST" or "CREATE"
- D . The body part of some HTTP request messages can be empty
HTTP/2 is a low-latency Internet transport layer protocol based on UDP.
- A . True
- B . False
Telemetry network models are divided into broad and narrow senses. What modules does broad Telemetry include? (Multiple choice)
- A . Equipment
- B . Analyzer
- C . Controller
- D . collector
As shown in the figure, in medium-sized networks, in order to improve the reliability of BGP RR, dual RRs are generally deployed.
When deploying dual RRs, the Cluster IDs of the two RRs are generally set to be consistent. Which of the following is the reason for this?
- A . Prevent suboptimal
- B . Prevent RR from receiving too many routes and causing insufficient memory.
- C . Prevent loops
- D . Prevent the client from receiving too many routes and causing insufficient memory.
There are various services in the wide area bearer network of an enterprise. If you want to ensure the forwarding and processing of protocol packets when network congestion occurs, the priority of protocol packets should be set to which of the following?
- A . BE
- B . CS6/CS7
- C . EF
- D . AF4
In the scenario of dynamically establishing a VXLAN tunnel through BGP EVPN, which of the following routes does BGP EVPN use for MAC address advertisement, ARP information advertisement, and IRB route advertisement?
- A . Type1
- B . Type3
- C . Type4
- D . Type2