Which of the following description is correct about the process of sending and receiving data frames in the Access mode of the switch interface?

• A.In the Access mode, the VLAN tag of the data frame will be stripped off when sending.
• B.When the data frame enters the switch interface, the switch learns the destination MAC address in the data frame.
• C.Only receive unlabeled data frames in Access mode
• D.When receiving a tagged data frame directly discards in Access mode

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The network administrator defines a traffic policing strategy such as
[Huawei] display traffic policy user-defined
User Defined Traffic Policy Information:
Policy: p1
Classifier c1
Operator: OR
Behavior: b1
Committed Access Rate:
CIR 256(Kbps), PIR 0 (Kbps) CBS 48128 (byte), PBS 80128 (byte)
Color Mode: color blind
Conform Action: pass
Yellow Action: pass
Exceed Action: discard
statistic: enable
The router port that uses this policy has been idle for about 10 seconds. At this time, there are huge bursts of c1 type traffic coming in an instant, so how many bytes will be colored in the green packet?

• A.2K bytes
• B.48128 bytes
• C.32K bytes
• D.80128 bytes

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Routers HW1 and HW2 are IP multicast routers. These routers use the (S, G) entry to forward multicast packets.
Which of the following is correct about the "S" in the forwarding entry?

• A.SDP/SAP address
• B.Any A, B or C host address
• C.SSM address
• D.Manage a part of the multicast address
• E.GLOP address

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When you perform troubleshooting on a LAN deployed with Huawei devices, you find that there is a large number of unicast frames with unknown MAC addresses.
What is the biggest risk for the switches?

• A.Increased power consumption.
• B.Exhausts available bandwidth.
• C.Exhausts available TCAM entries.
• D.Exhausts memory for buffered frames.
• E.Available MAC address table entries in the system will be consumed.

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As shown in the figure, the IPSEC VPN is established between the branch and the headquarters using redundant links. At the same time, URPF is enabled on the traffic from the branch 1 on Router B.
Which of the following options is correct? (Multiple Choice)

• A.When using IPSEC multi-link redundancy backup, URPF strict mode can be used when URPF function enables on the tunnel interface.
• B.When using IPSEC backup link redundancy backup, URPF loose mode is recommended when the URPF function enables on the physical interface.
• C.When using IPSEC multi-link redundancy backup, URPF strict mode can be used when URPF function enables on the physical interface.
• D.When using IPSEC backup link redundancy backup, URPF strict mode can be used when URPF function enables on the physical interface.

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