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QUESTION: 178 Exam Topic: 2, Main Questions Set B

About the VLAN tag processing, the following description of the error is?

When Trunk port receives a frame, if the frame does not contain 802.1Q tag header, will be marked with PVID port; If the frame contains the 802.1Q tag header, no change.
When Trunk port to send the frame, when the port's PVID VLAN ID of the frame is not the same, discarded; When PVID VLAN ID and port with the same time frame, the pass-through
When Access port receives a frame, if the frame does not contain 802.1Q tag header, will be marked with PVID port; If the frame contains the 802.1Q tag header, the switch does not deal with them directly discarded.
When Access port to send frames, stripping 802.1Q tag header, frame issued ordinary Ethernet frames

Answer(s): B

QUESTION: 179 Exam Topic: 2, Main Questions Set B

About domain NAT statement is correct (
Note: the internal network IP address is a private address, the IP address of the network boundary public address) (Choose two)

First NAT within the user's source IP address of the request packet into the network server IP address
Will request packets based on source and destination IP address conversion
The request packet destination IP address into the IP address of the network server
After the data within the network server will receive a packet processing, packet destination IP address back to convert that into a public IP address (the IP address of the network boundary)

Answer(s): B,C

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QUESTION: 180 Exam Topic: 2, Main Questions Set B

Hardware packet filtering ACL number ranges?

2000-2999
3000-3999
4000-4999
9000-9499

Answer(s): D

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QUESTION: 181 Exam Topic: 2, Main Questions Set B

Proxy firewall to check request from the user, the user checks the security policy through the firewall on behalf of external users to establish a connection to the real server, forwarding an external user request, and returns a response back to the real server to the external user.