H12-224 Online Practice Questions and Answers

Which statements are false?

A. The VLAN mapping function is usually configured on the edge node of a public network.

B. The VLAN mapping function can save VLAN resources on a public network.

C. VLAN mapping allows private networks on different VLANs to communicate with each other over the ISP network.

D. VLAN mapping allows only the private networks on the same VLAN to communicate with each other.

RSTP adopts fast convergence mechanism. So, there is no Forward Delay interval in RSTP.

A. True

B. False

Which of the following statement about QoS in DiffServ mode is false?

A. The parameter field in the IP packet header informs devices on the network of the QoS requirements of the application.

B. Every device on the packet transmission paths can learn the service request types by analyzing the IP packet header.

C. Before sending packets, the application program needs to confirm that the network has reserved resources for packet transmission.

D. DiffServ is a QoS solution based on packets.

Which of the following queue scheduling technology can achieve better fairness?

A. WFQ

B. PQ

C. CQ

D. RR

Which of the following network or link type is not the basic network or link type defined in OSPF?

A. P2P

B. P2MP

C. Broadcast

D. Virtual link

An OSPF neighbor relationship fails to be established and the display ospf error command output is as follows.

Which of the following is the possible cause?

A. Router IDs conflict.

B. Area IDs are mismatched.

C. Network masks are inconsistent.

D. Authentication types are inconsistent.

Which command can trigger the advertisement of BGP routes without interrupting a BGP connection?

A. Reset bgp

B. Refresh bgp all external

C. Refresh bgp all internal

D. RR-filter

Which parameters are carried in a BGP Open message? (Choose three.)

A. Local AS number

B. BGP ID

C. Keepalive timer

D. Holder timer

E. Current peer status

Which of the following route selection mechanisms can adopt user-defined policies to determine data forwarding paths flexibly based on ACLs or packet lengths?

A. AS-path-filter

B. IP-prefix

C. Route-policy

D. Policy-based-route

Which of the following protocols are multicast routing protocol? (Choose three.)

A. DVMRP

B. PIM-DM

C. OSPF

D. PIM-SM