Last Updated on July 23, 2021 by InfraExam

312-50v10 : Certified Ethical Hacker v10 Exam : Part 07

  1. 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?

    • RADIUS
    • TACACS+
    • Kerberos
  2. What network security concept requires multiple layers of security controls to be placed throughout an IT infrastructure, which improves the security posture of an organization to defend against malicious attacks or potential vulnerabilities?

    What kind of Web application vulnerability likely exists in their software?

    • Host-Based Intrusion Detection System
    • Security through obscurity
    • Defense in depth
    • Network-Based Intrusion Detection System
  3. During the process of encryption and decryption, what keys are shared?

    • Private keys
    • User passwords
    • Public keys
    • Public and private keys
  4. How does the Address Resolution Protocol (ARP) work?

    • It sends a request packet to all the network elements, asking for the domain name from a specific IP.
    • It sends a request packet to all the network elements, asking for the MAC address from a specific IP.
    • It sends a reply packet to all the network elements, asking for the MAC address from a specific IP.
    • It sends a reply packet for a specific IP, asking for the MAC address.
  5. Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN?

    • AH promiscuous
    • ESP confidential
    • AH Tunnel mode
    • ESP transport mode
  6. What type of analysis is performed when an attacker has partial knowledge of inner-workings of the application?

    • Black-box
    • Announced
    • White-box
    • Grey-box
  7. A regional bank hires your company to perform a security assessment on their network after a recent data breach. The attacker was able to steal financial data from the bank by compromising only a single server. Based on this information, what should be one of your key recommendations to the bank?

    • Place a front-end web server in a demilitarized zone that only handles external web traffic
    • Require all employees to change their anti-virus program with a new one
    • Move the financial data to another server on the same IP subnet
    • Issue new certificates to the web servers from the root certificate authority
  8. You want to do an ICMP scan on a remote computer using hping2. What is the proper syntax?

    • hping2 -1 
    • hping2-i
    • hping2 –set-ICMP
    • hping2
  9. If executives are found liable for not properly protecting their company’s assets and information systems, what type of law would apply in this situation?

    • Common
    • Criminal
    • Civil 
    • International
  10. The company ABC recently contract a new accountant. The accountant will be working with the financial statements. Those financial statements need to be approved by the CFO and then they will be sent to the accountant but the CFO is worried because he wants to be sure that the information sent to the accountant was not modified once he approved it. What is the following options can be useful to ensure the integrity of the data?

    • The CFO can use a hash algorithm in the document once he approved the financial statements 
    • The CFO can use an excel file with a password
    • The financial statements can be sent twice, one by email and the other delivered in USB and the accountant can compare both to be sure is the same document
    • The document can be sent to the accountant using an exclusive USB for that document
  11. What is the way to decide how a packet will move from an untrusted outside host to a protected inside that is behind a firewall, which permits the hacker to determine which ports are open and if the packets can pass through the packet-filtering of the firewall?

    • Session hijacking
    • Firewalking 
    • Man-in-the middle attack
    • Network sniffing
  12. What type of OS fingerprinting technique sends specially crafted packets to the remote OS and analyzes the received response?

    • Passive
    • Active 
    • Reflective
    • Distributive
  13. Firewalk has just completed the second phase (the scanning phase) and a technician receives the output shown below. What conclusions can be drown based on these scan results?

    TCP port 21 – no response
    TCP port 22 – no response
    TCP port 23 – Time-to-live exceeded

    • The scan on port 23 was able to make a connection to the destination host prompting the firewall to respond with a TTL error
    • The lack of response from ports 21 and 22 indicate that those services are not running on the destination server
    • The scan on port 23 passed through the filtering device. This indicates that port 23 was not blocked at the firewall
    • The firewall itself is blocking ports 21 through 23 and a service is listening on port 23 of the target host
  14. A computer science student needs to fill some information into a secured Adobe PDF job application that was received from a prospective employer. Instead of requesting a new document that allowed the forms to be completed, the student decides to write a script that pulls passwords from a list of commonly used passwords to try against the secured PDF until the correct password is found or the list is exhausted. Which cryptography attack is the student attempting?

    • Man-in-the-middle attack
    • Session hijacking
    • Brute-force attack
    • Dictionary-attack 
  15. A penetration tester is conducting a port scan on a specific host. The tester found several ports opened that were confusing in concluding the Operating System (OS) version installed. Considering that NMAP result below, which of the following is likely to be installed on the target machine by the OS? Starting NMAP 5.21 at 2011-03-15 11:06 NMAP scan report for Host is up (1.00s latency). Not shown: 993 closed ports PORT STATE SERVICE 21/tcp open ftp 23/tcp open telnet 80/tcp open http 139/tcp open netbios-ssn 515/tcp open 631/tcp open ipp 9100/tcp open MAC Address: 00:00:48:0D:EE:8

    • The host is likely a Linux machine.
    • The host is likely a printer. 
    • The host is likely a router.
    • The host is likely a Windows machine.
  16. Bob received this text message on his mobile phone: “Hello, this is Scott Smelby from the Yahoo Bank. Kindly contact me for a vital transaction on:”. Which statement below is true?

    • This is a scam as everybody can get a @yahoo address, not the Yahoo customer service employees. 
    • This is a scam because Bob does not know Scott.
    • Bob should write to to verify the identity of Scott.
    • Bob should write to to verify the identity of Scott.
  17. When purchasing a biometric system, one of the considerations that should be reviewed is the processing speed. Which of the following best describes what it is meant by processing?

    • The amount of time and resources that are necessary to maintain a biometric system
    • How long it takes to setup individual user accounts
    • The amount of time it takes to be either accepted or rejected from when an individual provides identification and authentication information 
    • The amount of time it takes to convert biometric data into a template on a smart card
  18. An attacker changes the profile information of a particular user (victim) on the target website. The attacker uses this string to update the victim’s profile to a text file and then submit the data to the attacker’s database.

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    What is this type of attack (that can use either HTTP GET or HTTP POST) called?

    • Cross-Site Request Forgery 
    • SQL Injection
    • Browser Hacking
    • Cross-Site Scripting
  19. An attacker with access to the inside network of a small company launches a successful STP manipulation attack. What will he do next?

    • He will create a SPAN entry on the spoofed root bridge and redirect traffic to his computer. 
    • He will activate OSPF on the spoofed root bridge.
    • He will repeat this action so that it escalates to a DoS attack.
    • He will repeat the same attack against all L2 switches of the network.
  20. Which access control mechanism allows for multiple systems to use a central authentication server (CAS) that permits users to authenticate once and gain access to multiple systems?

    • Single sign-on 
    • Windows authentication
    • Role Based Access Control (RBAC)
    • Discretionary Access Control (DAC)