Refer to the graphic. The network administrator wishes to deny Host A access to the HTTP server but allow access to all other servers. Which of the following ACL rules will achieve this?

• A.Rule deny udp source 10.1.1.1 0 destination 202.100.1.12 0.0.0.0 destination-port eq 21
• B.Rule deny udp source 10.1.1.1 0 destination 202.100.1.12 0.0.0.0 destination-port eq 80
• C.Rule deny tcp source 10.1.1.1 0 destination 202.100.1.12 0.0.0.0 destination-port eq 80
• D.Rule deny tcp source 10.1.1.1 0 destination 202.100.1.12 0.0.0.0 destination-port eq 21

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In the Internet access business in the widespread use of ADSL and () two technologies. Both technologies support both dial-up access and leased line access two access methods.

• A.MSTP
• B.Metro
• C.LAN
• D.WAN

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The network as shown in the following figure, when OSPFv3 is enabled on all interfaces, Router A and Router B cannot establish adjacencies.

• A.True
• B.False

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A switch running STP can be converted to the Forwarding state after waiting for the forwarding delay in the Learning state.

• A.FALSE
• B.TRUE

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To achieve inter-VLAN communication, the following statements is correct ().

• A.the L2 switch, router configuration arm only through the inter-VLAN routing the communication to achieve
• B.In the L3 switch, can only be achieved through the router configuration arm inter-VLAN traffic routing
• C.In the L3 switch, VLAN interfaces can be configured to achieve three inter-VLAN communication
• D.In the L2 switch, VLAN interfaces can be configured to achieve three inter-VLAN communication

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