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Huawei H12-261-ENU Exam Syllabus Topics:

Huawei HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching) Sample Questions:

1. You need to access the subnets of different VPNs in the VXLAN network. The information about a subnet is as follows: RT=10:10 RT=1000:1000 Export 1000 in the EVPN instance and RT-100:100 in the VPN instance. Which of the following configurations can I make for another subnet? (Multiple choice)

A) The EVPN instance is 1000:1000.
B) 10:10 in the VPN instance
C) 1000:1000 appears in the VPN instance
D) EVPN implement 1000: 1000 expor

2. When a packet is forwarded to the public network in the MPLS BGP VPN network in the domain, it will be encapsulated with two layers of MPLS labels. Which of the following description about the two-layer label is wrong?

A) The export PE uses the inner label when determining which export CE the message should be sent to.
B) MPLS BGP VPN uses two-layer label public network label (also known as outer label) and private network label (also known as inner label).
C) By default, the router assigns the same label value to all VPNv4 routes destined for the peer PE.
D) The private network label is carried and distributed when the route is delivered by MP-BGP. The public network label is distributed by the LDP protocol.

3. Which of the following is true about Smart-link? (Multiple Choice)

A) Smart-link can be mixed with STP under the interface.
B) Smart-link supports load sharing.
C) Smart-link cannot detect the uplink and downlink status.
D) Smart-link mainly includes two roles: primary port and slave port.

4. Which of the following descriptions are correct about the PPPoE data frame? (Multiple Choice)

A) Once the PPPoE session is established, all Ethernet packets are unicast
B) The Session_ID of the PPP session is not allowed to change, it must be specified in the Discovery phase.
C) The Ethernet_Type field is fixed to 0x8863.
D) When PPPoE passes session data, Code must be set to 0x0.

5. Regarding the sliding window of TCP, which of the following descriptions are wrong? (Multiple Choice)

A) The sender announces the initial window size
B) TCP sliding window allows multiple packets to be sent before receiving an acknowledgment
C) The sliding window size can only be increased or left unchanged
D) The sender does not need to transmit a complete window size message.
E) After the retransmission timer expires, the sender has not received the acknowledgement and will retransmit the unconfirmed data.

Solutions: