NO.1 Security policies for the firewall are applied to interzones but not to interfaces.
A. True
B. False
Answer: A

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NO.2 Which of the following statements about RSTP and STP is true?
A. STP has more port states than RSTP .
B. The port roles used in RSTP is less than the port roles used in STP .
C. Since RSTP adopts fast convergence mechanism, it does not have Learning state which is available
in STP .
D. Same as STP , the ports will enter into Listening state once the RSTP has been enabled. Then, the
ports can receive BPDU and calculate the spanning tree.
Answer: A

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NO.3 Which statements about VLAN mapping are true?(Select 2 Answers)
A. When sending a frame from the local VLAN, the switch replaces the VLAN tag in the frame with
another VLAN tag.
B. When receiving a frame from another VLAN, the switch replaces the VLAN tag of the frame with
the local VLAN tag.
C. When an interface receives a frame from another VLAN, it does not replace the VLAN tag of the
frame. The interface replaces the VLAN tag of the frame with another VLAN tag only when it sends a
frame.
D. The interface replaces the VLAN tag of only the frame received from another VLAN, but does not
change the VLAN tag of the frame it sends out.
Answer: A,B

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NO.4 Which of the following are popular link efficiency mechanisms?(Select 2 Answers)
A. IPHC
B. LFI
C. HDLC
D. PPP
Answer: A,B

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NO.5 A VRRP virtual router can have one or more IP addresses.
A. True
B. False
Answer: A

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NO.6 As shown in the figure, SWA and SWB are two switches. Which statements are true? (Select 3
Answers)
A. Port0/ 3 can be an access interface
B. Port0/ 3 can be a hybrid interface
C. Port0/ 3 can be a trunk interface
D. None of the above
Answer: A,B,C

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NO.7 Which of the following packet drop policies can be applied to the congestion avoidance
mechanism? (Select 3 Answers)
A. Tail-drop
B. RED
C. WRED
D. WFQ
Answer: A,B,C

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NO.8 Which of the following statements about the link failure detection in STP protocol is not true?
A. When network topology is stable, the Designated Port sends BPDU packet at every Hello Time
interval.
B. When network topology is stable, BPDU packets will be transmitted periodically.
C. When the port does not receive new BPDU within a certain interval, the old configuration BPDU
will time out and the link failure can be detected.
D. The port sends Configuration BPDU at every Hello Time interval. When the link fails,
Configuration BPDU cannot be sent out. As a result, this port can detect the link failure.
Answer: D

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