Huawei HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching) - H12-261-ENU Exam Practice Test

A. The MPLS label is 4 bytes long and is encapsulated between the link layer and the network layer.

B. If the bottom mark of the label is S=0, it indicates that the label is the bottom label of the stack and directly performs IP forwarding.

C. By default, the device supports the PHP feature, and the label value of the egress node supported PHP that is assigned to the penultimate hop node is 3.

D. When the tag value is 0, it indicates that the tag should be ejected, and the packet must be forwarded based on IPv4.

A. For the cross-domain vPn-OptionA mode, the route between the two ASBR is a common IPv4 route.

B. For the cross-domain vPN-Option B mode, an MP-eBGP neighbor relationship needs to be established between the two ASBR.

C. For the cross-domain vPN-OptionB mode, two ASBR are interconnected by multiple interfaces (including sub-interfaces). Each interface is associated with one VPN. Each ASBR-PE uses the peer as the CE.

D. When the public network label only use LDP, for the cross-domain vp-Option-c scheme 2, three-layer labels are required for packet forwarding.

A. Number of the C-RP interface

B. IP address of the C-RP interface

C. The group scope mask length of the C-RP service matching the group address which the user joins

D. The priority of C-RP

A. False

B. True

A. 30M

B. 15M

C. 25M

D. 90M

A. When the packet is forwarded in the MPLS domain, the top label of the MPLS packet is replaced by the label allocated by the next hop according to the label forwarding table.

B. When the IP packets into the MPLS domain, checks the destination IP address of the corresponding Tunnel ID if TunnelID is 0x0, and proceeds to MPLS forwarding process.

C. When an IP packet enters the MPLS domain, the MPLS border device inserts a new label between the packet layer 2 header and the IP header.

D. By default, the value of the label assigned to the penultimate hop node by the Egress1 node that supports PHP is 3.

A. False

B. True

A. PSH

B. RST

C. ACK

D. SYN

E. SND

F. CLR

A. After more than 6 seconds

B. After the Forward Delay expires

C. After MaxAge times out

D. After the Hold time expires

E. On the interface, RSTP does not age BPDUs.