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H12-721 PDF DEMO:
QUESTION NO: 1
Which of the following are correct regading TCP and TCP proxy on the reverse source detection? (Choose three answers)
A. TCP and TCP proxy detection can prevent reverse source SYN Flood.
B. TCP proxy acts as a proxy device. TP is connected between both ends, when one end initiates a connection with the device it must complete the TCP three-way handshake.
C. With TCP proxy mode attack prevention, detection mechanism must be turned on.
D. TP reverse source probes to detect the source IP packets by sending a Reset.
Answer: A,B,C
QUESTION NO: 2
A network is shown below.
A dial customer cannot establish a connection via a VPN client PC and USG (LNS) l2tp vpn. What are valid reasons for this failure? (Choose three answers)
A. LNS tunnel tunnel name change is inconsistent with the client name.
B. L2TP tunnel authentication failed.
C. PPP authentication fails, PPP authentication mode set on the client PC and LNS inconsistent.
D. Client PC can not obtain an IP address assigned to it from the LNS.
Answer: B,C,D
QUESTION NO: 3
Two endpoints cannot build a successful IPsec VPN session. Which of the following firewall configuation errors could be the problem? (Choose three answers)
A. A device does not have a route to the peer within the network.
B. A gateway configuration on both ends with the referenced ACL security policy
C. The gateway configuration on both ends of the IPsec proposal is inconsistent.
D. Both ends are not configured for DPD.
Answer: A,B,C
QUESTION NO: 4
SSL works at the application layer and is encrypted for specific applications, while IPsec operates at which layer and provides transparent encryption protection for this level and above?
A. The data link layer
B. Network Layer
C. Transport Layer
D. Presentation Layer
Answer: B
QUESTION NO: 5
In the attack shown below, a victim host packet captures the traffic. According to the information shown, what kind of attack is this?
A. SYN Flood
B. SYN-ACK Flood
C. ACK-Flood
D. Connection Flood
Answer: C
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Updated: May 28, 2022