2026年最新のに更新された検証済みの合格させる312-50v13学習ガイドベスト問題集を使おう Courses
究極なガイドは312-50v13最新版限定公開
質問 # 316
Study the snort rule given below and interpret the rule. alert tcp any any --> 192.168.1.0/24 111 (content:"|00 01 86 a5|"; msG. "mountd access";)
- A. An alert is generated when any packet other than a TCP packet is seen on the network and destined for the 192.168.1.0 subnet
- B. An alert is generated when a TCP packet is generated from any IP on the 192.168.1.0 subnet and destined to any IP on port 111
- C. An alert is generated when a TCP packet is originated from port 111 of any IP address to the
192.168.1.0 subnet - D. An alert is generated when a TCP packet originating from any IP address is seen on the network and destined for any IP address on the 192.168.1.0 subnet on port 111
正解：D
質問 # 317
which of the following information security controls creates an appealing isolated environment for hackers to prevent them from compromising critical targets while simultaneously gathering information about the hacker?
- A. Botnet
D Firewall - B. intrusion detection system
- C. Honeypot
正解：C
解説：
A honeypot may be a trap that an IT pro lays for a malicious hacker, hoping that they will interact with it during a way that gives useful intelligence. It's one among the oldest security measures in IT, but beware:
luring hackers onto your network, even on an isolated system, are often a dangerous game.honeypot may be a good starting place: "A honeypot may be a computer or computing system intended to mimic likely targets of cyberattacks." Often a honeypot are going to be deliberately configured with known vulnerabilities in situation to form a more tempting or obvious target for attackers. A honeypot won't contain production data or participate in legitimate traffic on your network - that's how you'll tell anything happening within it's a results of an attack. If someone's stopping by, they're up to no good.That definition covers a various array of systems, from bare-bones virtual machines that only offer a couple of vulnerable systems to ornately constructed fake networks spanning multiple servers. and therefore the goals of these who build honeypots can vary widely also , starting from defense thorough to academic research. additionally , there's now an entire marketing category of deception technology that, while not meeting the strict definition of a honeypot, is certainly within the same family. But we'll get thereto during a moment.honeypots aim to permit close analysis of how hackers do their dirty work. The team controlling the honeypot can watch the techniques hackers use to infiltrate systems, escalate privileges, and otherwise run amok through target networks. These sorts of honeypots are found out by security companies, academics, and government agencies looking to look at the threat landscape. Their creators could also be curious about learning what kind of attacks are out there, getting details on how specific sorts of attacks work, or maybe trying to lure a specific hackers within the hopes of tracing the attack back to its source. These systems are often inbuilt fully isolated lab environments, which ensures that any breaches don't end in non-honeypot machines falling prey to attacks.Production honeypots, on the opposite hand, are usually deployed in proximity to some organization's production infrastructure, though measures are taken to isolate it the maximum amount as possible. These honeypots often serve both as bait to distract hackers who could also be trying to interrupt into that organization's network, keeping them faraway from valuable data or services; they will also function a canary within the coalpit , indicating that attacks are underway and are a minimum of partially succeeding.
質問 # 318
An ethical hacker has been tasked with assessing the security of a major corporation's network. She suspects the network uses default SNMP community strings. To exploit this, she plans to extract valuable network information using SNMP enumeration. Which tool could best help her to get the information without directly modifying any parameters within the SNMP agent's management information base (MIB)?
- A. SnmpWalk, with a command to change an OID to a different value
- B. Oputits, are mainly designed for device management and not SNMP enumeration
- C. Nmap, with a script to retrieve all running SNMP processes and associated ports
- D. snmp-check (snmp_enum Module) to gather a wide array of information about the target
正解：D
解説：
snmp-check (snmp_enum Module) is the best tool to help the ethical hacker to get the information without directly modifying any parameters within the SNMP agent's MIB. snmp-check is a tool that allows the user to enumerate SNMP devices and extract information from them. It can gather a wide array of information about the target, such as system information, network interfaces, routing tables, ARP cache, installed software, running processes, TCP and UDP services, user accounts, and more. snmp-check can also perform brute force attacks to discover the SNMP community strings, which are the passwords used to access the SNMP agent.
snmp-check is available as a standalone tool or as a module (snmp_enum) within the Metasploit framework.
The other options are not as effective or suitable as snmp-check for the ethical hacker's task. Nmap is a network scanning and enumeration tool that can perform various types of scans and probes on the target. It can also run scripts to perform specific tasks, such as retrieving SNMP information. However, Nmap may not be able to gather as much information as snmp-check, and it may also trigger alerts or blocks from firewalls or intrusion detection systems. Oputils is a network monitoring and management toolset that can perform various functions, such as device discovery, configuration backup, bandwidth monitoring, IP address management, and more. However, Oputils is mainly designed for device management and not SNMP enumeration, and it may not be able to extract valuable network information from the SNMP agent.
SnmpWalk is a tool that allows the user to retrieve the entire MIB tree of an SNMP agent by using SNMP GETNEXT requests. However, SnmpWalk is not suitable for the ethical hacker's task, because it requires the user to change an OID (object identifier) to a different value, which may modify the parameters within the SNMP agent's MIB and affect its functionality or security. References:
* snmp-check - The SNMP enumerator
* SNMP Enumeration | Ethical Hacking - GreyCampus
* SNMP Enumeration - GeeksforGeeks
* Nmap - the Network Mapper - Free Security Scanner
* OpUtils - Network Monitoring & Management Toolset
* SnmpWalk - SNMP MIB Browser
質問 # 319
You are performing a penetration test for a client and have gained shell access to a Windows machine on the internal network. You intend to retrieve all DNS records for the internal domain, if the DNS server is at
192.168.10.2 and the domain name is abccorp.local, what command would you type at the nslookup prompt to attempt a zone transfer?
- A. is-d abccorp.local
- B. List domain=Abccorp.local type=zone
- C. list server=192.168.10.2 type=all
- D. Iserver 192.168.10.2-t all
正解：A
質問 # 320
Richard, an attacker, aimed to hack loT devices connected to a target network. In this process. Richard recorded the frequency required to share information between connected devices. After obtaining the frequency, he captured the original data when commands were initiated by the connected devices. Once the original data were collected, he used free tools such as URH to segregate the command sequence.
Subsequently, he started injecting the segregated command sequence on the same frequency into the loT network, which repeats the captured signals of the devices. What Is the type of attack performed by Richard In the above scenario?
- A. Reconnaissance attack
- B. Replay attack
- C. Side-channel attack
- D. CrypTanalysis attack
正解：B
解説：
Replay Attack could be a variety of security attack to the info sent over a network.
In this attack, the hacker or a person with unauthorized access, captures the traffic and sends communication to its original destination, acting because the original sender. The receiver feels that it's Associate in Nursing genuine message however it's really the message sent by the aggressor. the most feature of the Replay Attack is that the consumer would receive the message double, thence the name, Replay Attack.
Prevention from Replay Attack :
1. Timestamp technique -
Prevention from such attackers is feasible, if timestamp is employed at the side of the info. Supposedly, the timestamp on an information is over a precise limit, it may be discarded, and sender may be asked to send the info once more.
2. Session key technique -
Another way of hindrance, is by victimisation session key. This key may be used one time (by sender and receiver) per dealing, and can't be reused.
質問 # 321
During a recent security assessment, you discover the organization has one Domain Name Server (DNS) in a Demilitarized Zone (DMZ) and a second DNS server on the internal network.
What is this type of DNS configuration commonly called?
- A. DNS Scheme
- B. DynDNS
- C. Split DNS
- D. DNSSEC
正解：C
解説：
Split DNS (also known as Split-Horizon DNS) is a configuration where internal users and external users receive different DNS responses. Typically, one DNS server resides in the DMZ for public access, and another is inside the network for internal name resolution.
# Reference - CEH v13 Official Study Guide, Module 9: System Hacking / Perimeter Security
"Split DNS allows different DNS records to be presented based on whether the requester is from inside or outside the organization's network."
# Incorrect options:
A). DynDNS is a dynamic DNS provider.
B). DNS Scheme is a non-standard term.
C). DNSSEC is a security extension for DNS, not a deployment model.
質問 # 322
While performing a security audit of a web application, an ethical hacker discovers a potential vulnerability.
The application responds to logically incorrect queries with detailed error messages that divulge the underlying database's structure. The ethical hacker decides to exploit this vulnerability further. Which type of SQL Injection attack is the ethical hacker likely to use?
- A. UNION SQL Injection
- B. Error-based SOL Injection
- C. Blind/inferential SQL Injection
- D. In-band SQL Injection
正解：B
解説：
Error-based SQL Injection is a type of in-band SQL Injection attack that relies on error messages thrown by the database server to obtain information about the structure of the database. In some cases, error-based SQL injection alone is enough for an attacker to enumerate an entire database.
The ethical hacker is likely to use this type of SQL Injection attack because the application responds to logically incorrect queries with detailed error messages that divulge the underlying database's structure. This means that the attacker can craft malicious SQL queries that trigger errors and reveal information such as table names, column names, data types, etc. The attacker can then use this information to construct more complex queries that extract data from the database.
For example, if the application uses the following query to display the username of a user based on the user ID:
SELECT username FROM users WHERE id = '$id'
The attacker can inject a single quote at the end of the user ID parameter to cause a syntax error:
SELECT username FROM users WHERE id = '1'
The application might display an error message like this:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''1'' at line 1 This error message reveals that the database server is MySQL and that the user ID parameter is enclosed in single quotes. The attacker can then use other techniques such as UNION, subqueries, or conditional statements to manipulate the query and retrieve data from other tables or columns.
References:
* [CEHv12 Module 05: Sniffing]
* Types of SQL Injection (SQLi) - GeeksforGeeks
* Types of SQL Injection? - Acunetix
質問 # 323
Sam, a web developer, was instructed to incorporate a hybrid encryption software program into a web application to secure email messages. Sam used an encryption software, which is a free implementation of the OpenPGP standard that uses both symmetric-key cryptography and asymmetric-key cryptography for improved speed and secure key exchange. What is the encryption software employed by Sam for securing the email messages?
- A. PGP
- B. S/MIME
- C. SMTP
- D. GPG
正解：A
質問 # 324
A security analyst is performing an audit on the network to determine if there are any deviations from the security policies in place. The analyst discovers that a user from the IT department had a dial-out modem installed.
Which security policy must the security analyst check to see if dial-out modems are allowed?
- A. Permissive policy
- B. Acceptable-use policy
- C. Remote-access policy
- D. Firewall-management policy
正解：C
解説：
In CEH v13 Module 01: Information Security Controls, the Remote Access Policy is defined as the guideline that governs:
Which remote access methods (VPNs, modems, RDP, etc.) are permitted.
Requirements for authentication and encryption.
Who is authorized to use them and under what conditions.
In This Case:
The use of a dial-out modem is considered a remote access method, especially if it bypasses the corporate firewall.
The analyst needs to check whether such remote access is permitted, and under what security controls.
Reference:
Module 01 - Policies and Governance: Remote Access Policy
CEH eBook: Policy Enforcement and Exception Auditing
質問 # 325
What is correct about digital signatures?
- A. Digital signatures may be used in different documents of the same type.
- B. A digital signature cannot be moved from one signed document to another because it is the hash of the original document encrypted with the private key of the signing party.
- C. A digital signature cannot be moved from one signed document to another because it is a plain hash of the document content.
- D. Digital signatures are issued once for each user and can be used everywhere until they expire.
正解：B
質問 # 326
Louis, a professional hacker, had used specialized tools or search engines to encrypt all his browsing activity and navigate anonymously to obtain sensitive/hidden information about official government or federal databases. After gathering the Information, he successfully performed an attack on the target government organization without being traced. Which of the following techniques is described in the above scenario?
- A. VoIP footpnnting
- B. website footprinting
- C. VPN footprinting
- D. Dark web footprinting
正解：D
解説：
The deep web is the layer of the online cyberspace that consists of web pages and content that are hidden and unindexed.
質問 # 327
You went to great lengths to install all the necessary technologies to prevent hacking attacks, such as expensive firewalls, antivirus software, anti-spam systems, and intrusion detection/prevention tools in your company's network. You are confident that hackers will never be able to gain access. Your peer, Peter Smith, disagrees and says the presence of a "weakest link" still exposes the network.
What is Peter Smith talking about?
- A. Untrained staff or ignorant computer users who inadvertently become the weakest link in your security chain
- B. Continuous spam emails cannot be blocked by your security system since spammers use different techniques to bypass filters
- C. "Zero-day" exploits are the weakest link in the security chain since IDS will not be able to detect these attacks
- D. "Polymorphic viruses" are the weakest link in the security chain since antivirus scanners will not be able to detect these attacks
正解：A
解説：
Comprehensive and Detailed Explanation:
The "weakest link" in cybersecurity is almost always the human element. Even with cutting-edge technology and airtight configurations, untrained or careless users can fall for phishing attacks, use weak passwords, or mishandle sensitive data - giving hackers a path into the system.
From CEH v13 Courseware:
* Module 7: Social Engineering
* Topic: Human Element in Security Breaches
Reference:CEH v13 Study Guide - Module 7: Insider Threats and Social EngineeringSANS Security Awareness Program - Human Risk Management
質問 # 328
These hackers have limited or no training and know how to use only basic techniques or tools.
What kind of hackers are we talking about?
- A. Gray-Hat Hacker
- B. Black-Hat Hackers A
- C. White-Hat Hackers
- D. Script Kiddies
正解：D
解説：
Script Kiddies: These hackers have limited or no training and know how to use only basictechniques or tools.
Even then they may not understand any or all of what they are doing.
質問 # 329
Which of the following tools is used to analyze the files produced by several packet-capture programs such as tcpdump, WinDump, Wireshark, and EtherPeek?
- A. tcptrace
- B. tcptraceroute
- C. OpenVAS
- D. Nessus
正解：A
質問 # 330
Email is transmitted across the Internet using the Simple Mail Transport Protocol. SMTP does not encrypt email, leaving the information in the message vulnerable to being read by an unauthorized person. SMTP can upgrade a connection between two mail servers to use TLS. Email transmitted by SMTP over TLS is encrypted. What is the name of the command used by SMTP to transmit email over TLS?
- A. OPPORTUNISTICTLS
- B. STARTTLS
- C. UPGRADETLS
- D. FORCETLS
正解：B
解説：
STARTTLS is an SMTP command that allows the client to upgrade an existing insecure connection to a secure, encrypted TLS connection. It is widely supported by SMTP servers and used to protect email transmissions from interception.
Reference - CEH v13 Official Study Guide:
Module 20: Cryptography
Section: Secure Email Communication
Quote:
"STARTTLS is an SMTP command used to initiate encryption on an existing plaintext connection using TLS." Incorrect Options:
A). Opportunistic TLS is a concept, not a command
B & C. UPGRADETLS and FORCETLS are not valid SMTP commands
質問 # 331
You work for Acme Corporation as Sales Manager. The company has tight network security restrictions. You are trying to steal data from the company's Sales database (Sales.xls) and transfer them to your home computer. Your company filters and monitors traffic that leaves from the internal network to the Internet.
How will you achieve this without raising suspicion?
- A. Encrypt the Sales.xls using PGP and e-mail it to your personal gmail account
- B. You can conceal the Sales.xls database in another file like photo.jpg or other files and send it out in an innocent looking email or file transfer using Steganography techniques
- C. Package the Sales.xls using Trojan wrappers and telnet them back your home computer
- D. Change the extension of Sales.xls to sales.txt and upload them as attachment to your hotmail account
正解：B
質問 # 332
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2026年最新のに更新された検証済みの合格させる312-50v13試験にはリアル問題解答：https://drive.google.com/open?id=1cdeMjFsMG1t_Y5pyCDez5125zvLGwG1M