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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Firewall NAT and User Management | 20% | - NAT Technologies
|
| Topic 2: Encryption and PKI Technologies | 15% | - Encryption Fundamentals
|
| Topic 3: Network Basics and Common Threats | 15% | - Network Fundamentals
|
| Topic 4: Network Security Concepts and Specifications | 10% | - Future Network Security Trends
|
| Topic 5: Firewall Security Policy Technologies | 20% | - Firewall Fundamentals
|
| Topic 6: Firewall Hot Standby and IPS | 20% | - Hot Standby Technologies
|
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NEW QUESTION # 130
When IKEv1 negotiation phase 1 uses the aggressive mode, only three messages are used. Which of the following is the function of message 3?
Answer: A
Explanation:
Explanation From HCIA-Security documents:
In IKEv1 Phase 1 aggressive mode, the negotiation completes in three messages, unlike main mode which uses six.
* Message 1 (Initiator # Responder): Contains the IKE proposal, Diffie-Hellman public value, nonce, and the initiator's identity information.
* Message 2 (Responder # Initiator): Returns the selected proposal, responder's Diffie-Hellman public value, nonce, identity information, and authentication data. At this stage, the initiator can authenticate the responder.
* Message 3 (Initiator # Responder): Carries the initiator's authentication data, allowing the responder to verify and authenticate the initiator.
Therefore, the primary function of message 3 is to provide authentication information so that the responder can confirm the identity of the initiator.
Options A and B correspond to earlier negotiation steps, and C describes part of message 2. Hence, the correct answer is D.
NEW QUESTION # 131
Which of the following are antivirus response actions of the firewall?
Answer: A,B,D
Explanation:
On a firewall that includes antivirus inspection, the device can take different response actions after it detects malware in traffic (for example, in file transfers, email attachments, or web downloads). Block is a standard antivirus action: the firewall stops the session or drops the infected content to prevent the malicious file from reaching the destination host. Alert (alarm/log) is also a common response action: the firewall generates an event, log, or alarm so administrators can investigate the source, destination, file type, signature name, and policy that triggered the detection.
Some firewall antivirus engines also support content-handling actions such as deleting an attachment (or stripping the infected file/attachment) while allowing the rest of the session to proceed, depending on the protocol and security profile. This is typically used in scenarios like email or file-based protocols where removing the infected payload is feasible.
Declare is not a normal antivirus response action on firewalls; it does not describe a meaningful enforcement or notification behavior. Therefore, the valid antivirus response actions here are Block, Alert, and Delete attachment.
NEW QUESTION # 132
Match the following single-packet attack types with their corresponding descriptions.
Answer:
Explanation:
Explanation:
A. Scanning attacks # Attackers use ICMP packets to probe the target IP address to identify active hosts that connect to the target network.
B. Malformed packet attacks # Attackers send considerable malformed packets in an attempt to crash targeted hosts or servers.
C. Special packet control attacks # Such attacks are reconnaissance activities for attacks but not real attacks.
That is, attackers send special packets to probe network structures.
In HCIA-Security, single-packet attacks are commonly categorized by the purpose and structure of the packets being sent. Scanning attacks are mainly used to discover targets and collect information before a real attack begins. A common example is using ICMP probe packets to identify whether hosts are alive and reachable on a network. This makes the ICMP host-discovery description the correct match for scanning attacks.
Malformed packet attacks involve sending packets with abnormal, invalid, or deliberately corrupted structures. Their purpose is to exploit weaknesses in protocol handling or operating system processing so that the target host, device, or server becomes unstable, crashes, or stops responding. Therefore, the description about sending many malformed packets to crash targets clearly matches this category.
Special packet control attacks are also more related to probing than direct destruction. In this case, attackers send specially crafted control or probe packets to learn network structure, device behavior, or service characteristics. These activities are considered reconnaissance rather than full attacks. That is why the description about probing network structures with special packets belongs to special packet control attacks.
NEW QUESTION # 133
If internal employees access the Internet through the firewall and find that they cannot connect to the Internet normally, what view commands can be used on the firewall to troubleshoot interfaces, security zones, security policies, and routing tables?
Answer:
Explanation:
display firewall session table verbose
NEW QUESTION # 134
In the firewall, the () zone defines the device itself and is the highest security level zone with a priority of 100.
Answer:
Explanation:
Local
NEW QUESTION # 135
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