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Free CEH v11 312-50v11 Ultimate Study Guide (Updated 525 Questions)
NEW QUESTION # 15
The following is an entry captured by a network IDS. You are assigned the task of analyzing this entry. You notice the value 0x90, which is the most common NOOP instruction for the Intel processor. You figure that the attacker is attempting a buffer overflow attack.
You also notice "/bin/sh" in the ASCII part of the output.
As an analyst what would you conclude about the attack?
- A. The buffer overflow attack has been neutralized by the IDS
- B. The attacker is attempting a buffer overflow attack and has succeeded
- C. The attacker is attempting an exploit that launches a command-line shell
- D. The attacker is creating a directory on the compromised machine
Answer: C
NEW QUESTION # 16
John, a professional hacker, targeted CyberSol Inc., an MNC. He decided to discover the loT devices connected in the target network that are using default credentials and are vulnerable to various hijacking attacks. For this purpose, he used an automated tool to scan the target network for specific types of loT devices and detect whether they are using the default, factory-set credentials. What is the tool employed by John in the above scenario?
- A. AT&T loT Platform
- B. loTSeeker
- C. loT Inspector
- D. Azure loT Central
Answer: C
NEW QUESTION # 17
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. VPN footprinting
- B. VoIP footpnnting
- C. Dark web footprinting
- D. website footprinting
Answer: C
Explanation:
The deep web is the layer of the online cyberspace that consists of web pages and content that are hidden and unindexed.
NEW QUESTION # 18
Gilbert, a web developer, uses a centralized web API to reduce complexity and increase the Integrity of updating and changing dat a. For this purpose, he uses a web service that uses HTTP methods such as PUT. POST. GET. and DELETE and can improve the overall performance, visibility, scalability, reliability, and portability of an application. What is the type of web-service API mentioned in the above scenario?
- A. JSON-RPC
- B. RESTful API
- C. SOAP API
- D. REST API
Answer: B
Explanation:
*REST is not a specification, tool, or framework, but instead is an architectural style for web services that serves as a communication medium between various systems on the web. *RESTful APIs, which are also known as RESTful services, are designed using REST principles and HTTP communication protocols RESTful is a collection of resources that use HTTP methods such as PUT, POST, GET, and DELETE RESTful API: RESTful API is a RESTful service that is designed using REST principles and HTTP communication protocols. RESTful is a collection of resources that use HTTP methods such as PUT, POST, GET, and DELETE. RESTful API is also designed to make applications independent to improve the overall performance, visibility, scalability, reliability, and portability of an application. APIs with the following features can be referred to as to RESTful APIs: o Stateless: The client end stores the state of the session; the server is restricted to save data during the request processing o Cacheable: The client should save responses (representations) in the cache. This feature can enhance API performance pg. 1920 CEHv11 manual.
https://cloud.google.com/files/apigee/apigee-web-api-design-the-missing-link-ebook.pdf The HTTP methods GET, POST, PUT or PATCH, and DELETE can be used with these templates to read, create, update, and delete description resources for dogs and their owners. This API style has become popular for many reasons. It is straightforward and intuitive, and learning this pattern is similar to learning a programming language API. APIs like this one are commonly called RESTful APIs, although they do not display all of the characteristics that define REST (more on REST later).
NEW QUESTION # 19
Techno Security Inc. recently hired John as a penetration tester. He was tasked with identifying open ports in the target network and determining whether the ports are online and any firewall rule sets are encountered. John decided to perform a TCP SYN ping scan on the target network. Which of the following Nmap commands must John use to perform the TCP SVN ping scan?
- A. nmap -sn -pp < target ip address >
- B. nmap -sn -PA < target IP address >
- C. nmap -sn -PO < target IP address >
- D. Anmap -sn -PS < target IP address >
Answer: D
NEW QUESTION # 20
Ethical hacker jane Smith is attempting to perform an SQL injection attach. She wants to test the response time of a true or false response and wants to use a second command to determine whether the database will return true or false results for user IDs. which two SQL Injection types would give her the results she is looking for?
- A. Out of band and boolean-based
- B. Time-based and boolean-based
- C. union-based and error-based
- D. Time-based and union-based
Answer: A
NEW QUESTION # 21
jane invites her friends Alice and John over for a LAN party. Alice and John access Jane's wireless network without a password. However. Jane has a long, complex password on her router. What attack has likely occurred?
- A. Piggybacking
- B. Wireless sniffing
- C. Wardriving
- D. Evil twin
Answer: D
Explanation:
An evil twin may be a fraudulent Wi-Fi access point that appears to be legitimate but is about up to pay attention to wireless communications.[1] The evil twin is that the wireless LAN equivalent of the phishing scam. This type of attack could also be wont to steal the passwords of unsuspecting users, either by monitoring their connections or by phishing, which involves fixing a fraudulent internet site and luring people there. The attacker snoops on Internet traffic employing a bogus wireless access point. Unwitting web users could also be invited to log into the attacker's server, prompting them to enter sensitive information like usernames and passwords. Often, users are unaware they need been duped until well after the incident has occurred. When users log into unsecured (non-HTTPS) bank or e-mail accounts, the attacker intercepts the transaction, since it's sent through their equipment. The attacker is additionally ready to hook up with other networks related to the users' credentials. Fake access points are found out by configuring a wireless card to act as an access point (known as HostAP). they're hard to trace since they will be shut off instantly. The counterfeit access point could also be given an equivalent SSID and BSSID as a close-by Wi-Fi network. The evil twin are often configured to pass Internet traffic through to the legitimate access point while monitoring the victim's connection, or it can simply say the system is temporarily unavailable after obtaining a username and password.
NEW QUESTION # 22
You are tasked to configure the DHCP server to lease the last 100 usable IP addresses in subnet to. 1.4.0/23.
Which of the following IP addresses could be teased as a result of the new configuration?
- A. 10..1.5.200
- B. 10.1.4.254
- C. 10.1.4.156
- D. 210.1.55.200
Answer: A
NEW QUESTION # 23
An attacker redirects the victim to malicious websites by sending them a malicious link by email. The link appears authentic but redirects the victim to a malicious web page, which allows the attacker to steal the victim's data. What type of attack is this?
- A. Vishing
- B. Spoofing
- C. DDoS
- D. Phishing
Answer: D
NEW QUESTION # 24
Richard, an attacker, targets an MNC. in this process, he uses a footprinting technique to gather as much information as possible. Using this technique, he gathers domain information such as the target domain name, contact details of its owner, expiry date, and creation date. With this information, he creates a map of the organization's network and misleads domain owners with social engineering to obtain internal details of its network. What type of footprinting technique is employed by Richard?
- A. Email footprinting
- B. VPN footprinting
- C. Whois footprinting
- D. VoIP footprinting
Answer: C
Explanation:
WHOIS (pronounced because the phrase who is) may be a query and response protocol and whois footprinting may be a method for glance information about ownership of a website name as following: * name details * Contact details contain phone no. and email address of the owner * Registration date for the name * Expire date for the name * name servers
NEW QUESTION # 25
An organization is performing a vulnerability assessment tor mitigating threats. James, a pen tester, scanned the organization by building an inventory of the protocols found on the organization's machines to detect which ports are attached to services such as an email server, a web server or a database server. After identifying the services, he selected the vulnerabilities on each machine and started executing only the relevant tests. What is the type of vulnerability assessment solution that James employed in the above scenario?
- A. Tree-based assessment
- B. inference-based assessment
- C. Service-based solutions
- D. Product-based solutions
Answer: C
Explanation:
Explanation
As systems approaches to the event of biological models become more mature, attention is increasingly that specialize in the matter of inferring parameter values within those models from experimental data. However, particularly for nonlinear models, it's not obvious, either from inspection of the model or from the experimental data, that the inverse problem of parameter fitting will have a singular solution, or maybe a non-unique solution that constrains the parameters to lie within a plausible physiological range. Where parameters can't be constrained they're termed 'unidentifiable'. We specialise in gaining insight into the causes of unidentifiability using inference-based methods, and compare a recently developed measure-theoretic approach to inverse sensitivity analysis to the favored Markov chain Monte Carlo and approximate Bayesian computation techniques for Bayesian inference. All three approaches map the uncertainty in quantities of interest within the output space to the probability of sets of parameters within the input space. The geometry of those sets demonstrates how unidentifiability are often caused by parameter compensation and provides an intuitive approach to inference-based experimental design.
NEW QUESTION # 26
Kevin, a professional hacker, wants to penetrate CyberTech Inc.'s network. He employed a technique, using which he encoded packets with Unicode characters. The company's IDS cannot recognize the packet, but the target web server can decode them.
What is the technique used by Kevin to evade the IDS system?
- A. Desynchronization
- B. Session splicing
- C. Urgency flag
- D. Obfuscating
Answer: D
Explanation:
Explanation
Adversaries could decide to build an possible or file difficult to find or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. this is often common behavior which will be used across totally different platforms and therefore the network to evade defenses.
Payloads may be compressed, archived, or encrypted so as to avoid detection. These payloads may be used throughout Initial Access or later to mitigate detection. typically a user's action could also be needed to open and Deobfuscate/Decode Files or info for User Execution. The user can also be needed to input a parole to open a parole protected compressed/encrypted file that was provided by the mortal. Adversaries can also used compressed or archived scripts, like JavaScript.
Portions of files can even be encoded to cover the plain-text strings that will otherwise facilitate defenders with discovery. Payloads can also be split into separate, ostensibly benign files that solely reveal malicious practicality once reassembled.
Adversaries can also modify commands dead from payloads or directly via a Command and Scripting Interpreter. surroundings variables, aliases, characters, and different platform/language specific linguistics may be wont to evade signature based mostly detections and application management mechanisms.
NEW QUESTION # 27
Which Nmap option would you use if you were not concerned about being detected and wanted to perform a very fast scan?
- A. -T5
- B. -A
- C. -T0
- D. -O
Answer: A
NEW QUESTION # 28
You are a security officer of a company. You had an alert from IDS that indicates that one PC on your Intranet is connected to a blacklisted IP address (C2 Server) on the Internet. The IP address was blacklisted just before the alert. You are starting an investigation to roughly analyze the severity of the situation. Which of the following is appropriate to analyze?
- A. Event logs on the PC
- B. Internet Firewall/Proxy log.
- C. IDS log
- D. Event logs on domain controller
Answer: B
NEW QUESTION # 29
John wants to send Marie an email that includes sensitive information, and he does not trust the network that he is connected to. Marie gives him the idea of using PGP. What should John do to communicate correctly using this type of encryption?
- A. Use his own public key to encrypt the message.
- B. Use Marie's public key to encrypt the message.
- C. Use Marie's private key to encrypt the message.
- D. Use his own private key to encrypt the message.
Answer: B
Explanation:
When a user encrypts plaintext with PGP, PGP first compresses the plaintext. The session key works with a very secure, fast conventional encryption algorithm to encrypt the plaintext; the result is ciphertext. Once the data is encrypted, the session key is then encrypted to the recipient's public key
NEW QUESTION # 30
what are common files on a web server that can be misconfigured and provide useful Information for a hacker such as verbose error messages?
- A. php.ini
- B. administration.config
- C. idq.dll
- D. httpd.conf
Answer: C
Explanation:
Explanation
idq.dll may be a library employed by ISAPI for indexing.idq.dll may be a system process that's needed for your PC to figure properly. It shouldn't be removed.The idq.dll is an executable file on your computer's disk drive . This file contains machine language . If you begin the software Microsoft Windows on your PC, the commands contained in idq.dll are going to be executed on your PC. For this purpose, the file is loaded into the most memory (RAM) and runs there as a Microsoft Indexing Service ISAPI Extension process (also called a task).
Is idq.dll harmful?This process is taken into account safe. it's unlikely to pose any harm to your system.
Can I stop or remove idq.dll?Since idq.dll may be a system process it shouldn't be stopped. the method is required for your PC to figure properly. Also the corresponding software Microsoft Windows shouldn't be uninstalled.
Is idq.dll CPU intensive?This process is taken into account to be CPU intensive. Without proper management, CPU intensive processes can manipulate system resources causing speed loss. Check the Microsoft Windows settings to ascertain if you'll close up unneeded modules or services.
Why is idq.dll giving me errors?System process issues are mainly a results of conflicting applications running on your PC. Consider uninstalling any applications you're not using. Then reboot your computer.
NEW QUESTION # 31
What is GINA?
- A. Graphical Identification and Authentication DLL
- B. Global Internet National Authority (G-USA)
- C. GUI Installed Network Application CLASS
- D. Gateway Interface Network Application
Answer: A
NEW QUESTION # 32
which of the following protocols can be used to secure an LDAP service against anonymous queries?
- A. NTLM
- B. SSO
- C. WPA
- D. RADIUS
Answer: D
Explanation:
Explanation
Remote Authentication Dial-In User Service (RADIUS) could be a networking protocols, in operation on ports
1812 and 1813, that gives centralized Authentication, Authorization, and Accounting (AAA or Triple A) management for users who connect and use a network service. RADIUS was developed by American Revolutionary leader Enterprises, Inc. in 1991 as an access server authentication and accounting protocol and later brought into the net Engineering Task Force (IETF) standards.
RADIUS could be a client/server protocol that runs within the application layer, and might use either protocol or UDP as transport. Network access servers, the gateways that management access to a network, sometimes contain a RADIUS consumer element that communicates with the RADIUS server . RADIUS is commonly the back-end of alternative for 802.1X authentication moreover.
The RADIUS server is sometimes a background method running on a UNIX system or Microsoft Windows server.
NEW QUESTION # 33
In order to tailor your tests during a web-application scan, you decide to determine which web-server version is hosting the application. On using the sV flag with Nmap. you obtain the following response:
80/tcp open http-proxy Apache Server 7.1.6
what Information-gathering technique does this best describe?
- A. Banner grabbing
- B. Brute forcing
- C. Dictionary attack
- D. WhOiS lookup
Answer: A
Explanation:
Banner grabbing is a technique wont to gain info about a computer system on a network and the services running on its open ports. administrators will use this to take inventory of the systems and services on their network. However, an to find will use banner grabbing so as to search out network hosts that are running versions of applications and operating systems with known exploits.
Some samples of service ports used for banner grabbing are those used by Hyper Text Transfer Protocol (HTTP), File Transfer Protocol (FTP), and Simple Mail Transfer Protocol (SMTP); ports 80, 21, and 25 severally. Tools normally used to perform banner grabbing are Telnet, nmap and Netcat.
For example, one may establish a connection to a target internet server using Netcat, then send an HTTP request. The response can usually contain info about the service running on the host:
This information may be used by an administrator to catalog this system, or by an intruder to narrow down a list of applicable exploits. To prevent this, network administrators should restrict access to services on their networks and shut down unused or unnecessary services running on network hosts. Shodan is a search engine for banners grabbed from portscanning the Internet.
NEW QUESTION # 34
An Internet Service Provider (ISP) has a need to authenticate users connecting via analog modems, Digital Subscriber Lines (DSL), wireless data services, and Virtual Private Networks (VPN) over a Frame Relay network.
Which AAA protocol is the most likely able to handle this requirement?
- A. TACACS+
- B. DIAMETER
- C. Kerberos
- D. RADIUS
Answer: D
NEW QUESTION # 35
You receive an e-mail like the one shown below. When you click on the link contained in the mail, you are redirected to a website seeking you to download free Anti-Virus software.
Dear valued customers,
We are pleased to announce the newest version of Antivirus 2010 for Windows which will probe you with total security against the latest spyware, malware, viruses, Trojans and other online threats. Simply visit the link below and enter your antivirus code:
or you may contact us at the following address:
Media Internet Consultants, Edif. Neptuno, Planta
Baja, Ave. Ricardo J. Alfaro, Tumba Muerto, n/a Panama
How will you determine if this is Real Anti-Virus or Fake Anti-Virus website?
- A. Search using the URL and Anti-Virus product name into Google and lookout for suspicious warnings against this site
- B. Download and install Anti-Virus software from this suspicious looking site, your Windows 7 will prompt you and stop the installation if the downloaded file is a malware
- C. Download and install Anti-Virus software from this suspicious looking site, your Windows 7 will prompt you and stop the installation if the downloaded file is a malware
- D. Look at the website design, if it looks professional then it is a Real Anti-Virus website
- E. Connect to the site using SSL, if you are successful then the website is genuine
Answer: A
NEW QUESTION # 36
if you send a TCP ACK segment to a known closed port on a firewall but it does not respond with an RST. what do you know about the firewall you are scanning?
- A. This event does not tell you encrypting about the firewall.
- B. There is no firewall in place.
- C. It Is a non-stateful firewall.
- D. It is a stateful firewall
Answer: A
NEW QUESTION # 37
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