Huawei h31-611 practice test

SNMP uses connectionless UDP as the transmission protocol, whereas NETCONF uses connection-
oriented TCP.

• A. TRUE
• B. FALSE

Which of the following statements are true about OpenFlow interface information reporting?
(Multiple Choice)

• A. After the OpenFlow channel is successfully established, the controller actively queries port information from FPs.
• B. The controller sends Multipart Request messages to query port information.
• C. FPs respond with a Multipart Reply message for batch delivery of port information.
• D. When a port changes, the corresponding FP actively sends a Flow Mod message to report the port change information.

On an SDN network, OpenFlow connection backup data mainly includes which of the following?
(Multiple Choice)

• A. Collected forwarder interface information
• B. Binding relationship between the logical interface of the controller and the forwarder's physical interface
• C. Connection management information of the forwarder
• D. Collected forwarder VLAN information

OpenFlow channel establishment and maintenance involves which of the following messages?
(Multiple Choice)

• A. Collected forwarder interface information
• B. Features Request message
• C. Echo Request message
• D. PortStatus message

In the SDN VXLAN solution, when an OpenFlow connection between the controller and a forwarder is
torn down, the forwarder retains the static MAC address and ARP entries so that traffic can be
normally forwarded.

• A. TRUE
• B. FALSE

In the OpenFlow network switch model, the underlying data channel opens the flow table's public
API to the outside and uses the SNC to control the entire network.

• A. TRUE
• B. FALSE

Which of the following statements about BGP are true? (Multiple Choice)

• A. BGP calculates and discovers the optimal route.
• B. BGP uses TCP as the transport layer protocol with a port number of 179.
• C. BGP stability is ensured by the high reliability of TCP, not by its own mechanism.
• D. BGP sends only updated routing information, thereby saving a large amount of bandwidth resources.

Which of the following methods does not support traffic importing to the MPLS TE tunnel?

• A. Static routing
• B. Dynamic routing
• C. Automatic routing
• D. Policy-based routing

Which of the following statements are true about the meaning of the peer 20.1.1.2 allow-as-loop 2
command? (Multiple Choice)

• A. The local AS number can be repeated in the AS_Path attribute in the received routes.
• B. 2 indicates the number of times the AS number can be repeated.
• C. This command can only be used on EBGP peers.
• D. By default, the number of times the AS number is allowed to be duplicated is 1.

Which statement about BGP is true?

• A. BGP is used in ASs or between ASs to transmit and control routing information.
• B. BGP is used in an AS to discover paths.
• C. BGP is directly carried in IP packets.
• D. BGP must establish peer relationships based on direct links.

In BGP, which of the following are methods for loop avoidance?

• A. The Origin attribute of a route records the source from which the route was imported
• B. In a route's AS-Path attribute, all ASs along the path are recorded.
• C. In the next-hop attribute of a route, the route's next hop is recorded.
• D. The MED attribute of a route affects the outbound interface selection of another AS.

For a router that runs BGP4, which of the following statements is not true?

• A. When multiple paths exist, BGP4 selects the optimal path.
• B. BGP4 notifies the routes obtained from EBGP to all its BGP peers.
• C. BGP4 advertises to BGP peers only the routes it uses.
• D. BGP4 notifies the routes obtained from IBGP to all its BGP peers.

What kind of BGP packet contains routing information?

• A. Open
• B. Update
• C. Keepalive
• D. Notification

What kind of packet is used by BGP to transmit version number and AS number information?

• A. Open
• B. Update
• C. Keepalive
• D. Notification

Which of the following statements are true about the DIS in IS-IS? (Multiple Choice)

• A. A DIS creates and updates pseudo nodes on a broadcast network.
• B. DIS election is unpredictable.
• C. When all IS priorities are the same within a LAN, the IS with the largest MAC address is elected as the DIS.
• D. DIS election on a broadcast network is held in preemption mode.