Which control bit in the TCP header information can cause the receiver to reset the TCP connection?

• A.RST
• B.CLR
• C.SYN
• D.PSH
• E.ACK
• F.SND

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What is wrong about the description of MPLS below?

• A.MPLS supports multi-layer tag nesting, the S-bit value of the innermost tag is 1.
• B.The label space range of dynamic signaling protocols such as LDP and MP-BGP is 16-1023.
• C.The length of the MPLS label is 20 bits and it is used for packet forwarding.
• D.In the TTL processing mode by using Pipe mode, IP packets are transmitted on the MPLS network. The TTL value of the IP packets is reduced by 1 in the MPLS ingress node and the egress node respectively.

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Router HW1 and router HW2 are connected to network A and network B respectively. As shown below, if you want to establish an IPsec VPN between router HW1 and router HW2.
Which ACL does the router HW1 need to configure to enable LAN-to-LAN traffic to pass through the encrypted VPN tunnel?

• A.rule permit ip source 192.168.1.10 destination 10.1.2.0 0.0.0.255
• B.rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
• C.rule permit ip source 10.1.1.0 0.0.0.255 destination 192.168.1.2 0
• D.rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
• E.rule permit ip source 192.168.1.10 destination 192.168.1.2 0

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An MSTP switch treats an RSTP switch as an MSTP domain consisting of a single switch. The MSTP switch resolves the RSTP BPDU to an MST BPDU, where the IRPC is 0.

• A.True
• B.False

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Which SNMP message type report event sent to the NMS is reliable?

• A.Get Bulk
• B.Inform
• C.Get
• D.Response
• E.Trap

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