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Huawei HCIP-Security V4.0 Sample Questions (Q11-Q16):
NEW QUESTION # 11
When gateways are connected using GRE over IPsec, the IPsec encapsulation mode must be tunnel mode.
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
* GRE over IPsecis used totunnel non-IP traffic, multicast, and dynamic routing protocolsover IPsec VPN.
* Tunnel mode is requiredbecause:
* Transport mode only encrypts the payload, but GRE needs the entireoriginal IP packet encrypted.
* Tunnel mode encrypts the entire packet(original + GRE headers), ensuring full encapsulation.
* Why is this statement true?
* GRE over IPsec must use tunnel modeto fully encapsulate and protect packets.
HCIP-Security References:
* Huawei HCIP-Security Guide # GRE over IPsec Configuration
NEW QUESTION # 12
Which of the following statements are true about SYN scanning attacks?(Select All that Apply)
Answer: A,C,D
Explanation:
Comprehensive and Detailed Explanation:
* SYN scanning is a stealthy technique used to identify open ports on a target system without fully establishing a TCP connection.
* How SYN scanning works:
* The scanner sends aSYN packetto the target port.
* The target responds based on the port state:
* SYN-ACK # Port is open(Correct - D).
* RST # Port is closed(Correct - A).
* No response # The host does not exist, or a firewall is blocking it(Correct - B).
* The scanner doesnot send an ACK(unlike a full TCP connection). Instead, it sends anRSTto avoid detection.
* Why is C incorrect?
* In SYN scanning, the scanner does NOT send an ACK to complete thehandshake. Instead, it sends an RST to abort the connection.
HCIP-Security References:
* Huawei HCIP-Security Guide # SYN Scanning Techniques
NEW QUESTION # 13
The Nginx application is deployed on a Linux host. By checking Nginx logs, O&M engineers can obtain the complete URL information submitted by users and determine whether the Linux host is under SQL injection attacks.
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
* Nginx logs store detailed HTTP request information, including:
* RequestedURLs
* ClientIP addresses
* Query parameters(which may contain SQL injection attempts)
* SQL injection detection using logs:
* SuspiciousSQL keywordsin GET/POST requests (e.g., ' OR 1=1 -- or UNION SELECT).
* Repeated attack attemptsfrom a single source IP.
* Why is this statement true?
* Nginx logs provide full request details, enabling engineers to detect SQL injection attempts.
HCIP-Security References:
* Huawei HCIP-Security Guide # Web Attack Detection & Log Analysis
NEW QUESTION # 14
Sort the intrusion prevention steps in sequence based on the working mechanism of the firewall device.
Answer:
Explanation:
Explanation:
Intrusion Prevention Systems (IPS) in firewalls follow amulti-step processto detect and mitigate threats. The steps occur in a logical sequence:
1##Step 1: Identifies and Parses Application-Layer Protocols
* The firewall firstidentifies the protocol being used(e.g., HTTP, FTP, DNS, SMTP).
* Parsing the protocol helps the IPS engineunderstand how the data is structuredand what types of attacks might be embedded.
* This step is crucial for detectingprotocol-based attackslike SQL injection or cross-site scripting (XSS).
2##Step 2: Reassembles IP Fragments and TCP Flows
* Attackers oftensplit malicious payloads across multiple packetsto evade detection.
* The firewallreassembles fragmented packets and TCP flowsto reconstruct the full data stream.
* This step is critical for detectingevasion techniques such as fragmented attacks or out-of-order packet attacks.
3##Step 3: Performs Signature Matching
* Once the full data stream is reassembled, the IPScompares it against known attack signatures.
* Signature matching helps detect:
* Malware patterns(e.g., botnets, Trojans).
* Exploits targeting vulnerabilitiesin software and operating systems.
* Firewalls usepredefined signature databasesthat are regularly updated.
4##Step 4: Performs the Response Action Based on the IPS Profile
* If an attack is detected, the firewall takes anaction based on the IPS policy:
* Block the traffic(drop malicious packets).
* Alert the administrator(generate logs and alerts).
* Rate-limit traffic(slow down potential attack sources).
* Theresponse mechanism is customizablebased on security requirements.
NEW QUESTION # 15
Which of the following operations can be performed to harden the Windows operating system?(Select All that Apply)
Answer: B,C,D
Explanation:
Comprehensive and Detailed Explanation:
* Windows system hardening improves security by reducing attack surfaces.
* Recommended security measures include:
* A. Periodically checking account permissions# Prevents unauthorized access.
* B. Canceling default sharing# Reduces exposure to remote attacks.
* C. Restricting the number of users# Limits access to essential personnel.
* Why is D incorrect?
* Changing the default TTL value does not directly enhance system security.
HCIP-Security References:
* Huawei HCIP-Security Guide # Windows Hardening Best Practices
NEW QUESTION # 16
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