Which of the following statements about the S field in the MPLS packet header are correct? ()*

• A.Used to mark whether there are other labels behind this label, 1 means yes, 0 means no
• B.The s bit has only ibit in frame mode, and 2bit in cell mode
• C.Used to mark whether there are other labels behind this label, 0 means yes, 1 means no
• D.The s bit exists in every MPLS packet header

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The network administrator finds that a certain port of the switch has learned the MAC address, but it cannot forward data frames. Which of the following working statuses is this port in?

• A.Blocking
• B.Learning
• C.Listening
• D.Disabled

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What are the stable states of OSPF neighbor relationship?

• A.FULL
• B.Down
• C.2-Way
• D.Attempt

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The network is shown in the figure below. The router uses a sub-interface as the host gateway. The gateway IP address is 10.0.12.2. Which of the following commands can achieve this requirement? () (Multiple Choice Questions)

• A.interface GigabitEthernet0/0/0.10Dotlq termination vid 10
  Ip address10.0.12.2255.255.255.0 Arp broadcast enable #
• B.interface GigabitEthernet0/0/0.20Dotlq termination vid 20
  Ip address10.0.12.2255.255.255.0Arp broadcast enable #
• C.interface GigabitEtherneto/0/0.10Dotlq termination vid 20
  Ip address10.0.12.2255.255.255.0Arp broadcast enable
• D.interface GigabitEthernet0/0/0.20Dotlg termination vid 10
  Ip address10.0.12.2255.255.255.0Arp broadcast enable

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The configuration information of a certain router is shown in the figure. Which of the following statements are correct? () (Single-choice question)
#
aaa
authentication-scheme default
authentication-scheme huawei
authentication-mode radius
authorization-scheme default
authorization-scheme huawei
accounting-scheme default
domain default
domain default admin
domain huawei
authentication-scheme huawei
authorization-scheme huawei
local-user huawei password cipher 123456
local-user huawei@huawei password cipher 654321
#

• A.The domain with the domain name huawei does not use the billing plan
• B.The authorization method for the domain with the domain name huawei is local authorization
• C.The authentication method adopted for the domain with the domain name huawei is local authentication
• D.Use the username huawei for authentication. The password needs to be 654321

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