Stateful inspection firewall intercepts packets at the network layer and application layer extracted from each state information security policies need, and save the session table, through the analysis of these sessions tables and data packets associated with the connection request to make a follow-up appropriate decision.
A. True
B. False
Meaning Trunk Access Port PVID value and significance of the port PVID bit different, in Access represents the value of the default VLAN, but said the port belongs to the VLAN Trunk actually.
A. True
B. False
Compare similar symmetric encryption algorithms and asymmetric encryption algorithm key distribution method, encryption and decryption are performed by the information sent to the receiver key, the method can be used to send E-mail and other means.
A. True
B. False
Which of the following agreement is a multi- channel protocol?
A. WWW
B. FTP
C. PING
D. TELNET
PPPoE is mainly used for which scene?
A. Provide remote access users access to Ethernet
B. Provide access to remote Ethernet services for dial-up users
C. Enables users to access the Internet data packets are encrypted
D. To the user can access the Internet faster
Following on E1 and CE1, saying right there? (Choose three)
A. Can operate in clear channel mode
B. E1 work in the non -channel mode are unframed mode
C. E1 work in framing mode,only once timeslot bundling
D. CE1 work in unframed mode, you can bundle multiple slots
Packet filtering firewall at the application layer for each packet inspection, forwarding or discarding packets according to the configured security policy:
A. True
B. False
Interzone packet filtering matching principle is: first find inter-domain Policy, if there is no matching policy, the domain will not find among other strategies, but directly to discard the packet, refused to pass.
A. True
B. False
The following are the main features stateful inspection firewall is which?
A. Processing speed
B. Excellent follow-up packet processing performance
C. Only detect the network layer
D. Packet filtering detection for each package
When configuring l2tp, for commands allow l2tp virtual-template, statements is correct?
A. LNS is used to specify the trigger condition to initiate a call
B. LAC is used to specify the trigger condition to initiate a call
C. LAC is used to specify the call to accept Virtual-Template used
D. LNS to accept the call to specify the use of Virtual-Template
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