Home > Articles

  • Print
  • + Share This
This chapter is from the book

Review Questions

  1. Your client has asked you to run an Nmap scan against the servers it has located in its DMZ. The client would like you to identify the OS. Which of the following switches would be your best option?

    1. nmap -P0

    2. nmap -sO

    3. nmap -sS

    4. nmap -O

  2. During an internal pen test, you have gained access to an internal switch. You have been able to SPAN a port and are now monitoring all traffic with Wireshark. While reviewing this traffic, you are able to identify the OS of the devices that are communicating. What best describes this activity?

    1. Vulnerability scanning

    2. Nmap port scanning

    3. Active OS fingerprinting

    4. Passive OS fingerprinting

  3. ICMP is a valuable tool for troubleshooting and reconnaissance. What is the correct type for a ping request and a ping response?

    1. Ping request type 5, ping reply type 3

    2. Ping request type 8, ping reply type 0

    3. Ping request type 3, ping reply type 5

    4. Ping request type 0, ping reply type 8

  4. Which of the following is a vulnerability in the Bash shell that was discovered in 2014 and thereafter exploited to launch a range of attacks against Linux and UNIX systems?

    1. Shellshock

    2. Heartbleed

    3. Bashshell

    4. Poodle

  5. As part of a pen test, you have port scanned a Linux system. Listed here is the scan you performed: nmap -sX -vv -P0 -p 80. If the system had the specific listening port open, what would be returned?

    1. RST

    2. No response

    3. SYN ACK

    4. ACK

  6. Which of the following Netcat commands could be used to perform a UDP scan of the lower 1024 ports?

    1. Nc -sS -O target 1-1024

    2. Nc -hU <host(s)>

    3. Nc -sU -p 1-1024 <host(s)>

    4. Nc -u -v -w2 <host> 1-1024

  7. You have been assigned a junior pen tester during a pen test. You performed the following scan:

    nmap -sL www.example.com
    Starting Nmap 6.25 ( http://nmap.org ) at 2016-10-12 18:46
     Central Daylight Time
    Host not scanned

    Your partner asks you to explain the results. Which of the following best describes the correct answer?

    1. The system was offline.

    2. The technique only checks DNS and does not scan.

    3. The syntax is incorrect.

    4. ICMP is blocked, so no scan is performed.

  8. Which of the following sets all TCP flags to zeros?

    1. nmap -sn

    2. nmap -null

    3. nmap -sX

    4. nmap -sI

  9. You have captured some packets from a system you would like to passively fingerprint. You noticed that the IP header length is 20 bytes and there is a datagram length of 84 bytes. What do you believe the system to be?

    1. Windows XP

    2. Linux

    3. Windows 7

    4. Windows 8

  10. During the network mapping phase of a pen test, you have discovered the following two IP addresses: and They both have a mask of Which of the following is true?

    1. They are on the same network.

    2. They both have a default gateway of

    3. They both have a default gateway of

    4. They are on separate subnets.

  11. What type of scan is harder to perform because of the lack of response from open services and because packets could be lost due to congestion or from firewall blocked ports?

    1. Stealth scanning

    2. ACK scanning

    3. UDP scanning

    4. FIN scan

  12. You would like to perform a scan that runs a script against SSH and attempts to extract the SSH host key. Which of the following is the correct syntax?

    1. nmap -sC -p21, 111, 139 -T3 www.knowthetrade.com

    2. nmap -sC -p22, 111, 139 -T4 www.knowthetrade.com

    3. nmap -sL -p21, 111, 139 -T3 www.knowthetrade.com

    4. nmap -sI -p22, 111, 139 -T4 www.knowthetrade.com

  13. You have just performed an ACK scan and have been monitoring a sniffer while the scan was performed. The sniffer captured the result of the scan as an ICMP type 3 code 13. What does this result mean?

    1. The firewall is only a router with an ACL.

    2. The port is open.

    3. Port knocking is used.

    4. The port is closed.

  14. One of the members of your security assessment team is trying to find out more information about a client’s website. The Brazilian-based site has a .com extension. She has decided to use some online Whois tools and look in one of the Regional Internet Registries. Which of the following represents the logical starting point?

    1. AfriNIC

    2. ARIN

    3. APNIC

    4. RIPE

  15. You have captured the Wireshark scan results shown in Figure 3-13 and are attempting to determine what type of scan was performed against the targeted system. What is your answer?

    1. SYN

    2. IPID

    3. NULL

    4. XMAS


      Figure 3-13 Wireshark Scan Capture

  16. What is the purpose of the following Nmap scan?

    Nmap -sn
    1. Ping only on the targets, no port scan

    2. A NULL TCP scan

    3. A TCP port scan

    4. Port scan all targets

  17. You’re starting a port scan of a new network. Which of the following can be used to scan all ports on the network?

    1. nmap -p 1,65536

    2. nmap -p-

    3. nmap -ports "all"

    4. nmap -p 0-65536

  18. Which of following port-scanning techniques can be used to map out the firewall rules on a router?

    1. NULL scan

    2. ACK scan

    3. Inverse flag scan

    4. Firewalk

  19. What are the two ICMP codes used when performing a ping?

    1. Type 0 and 8

    2. Type 0 and 3

    3. Type 3 and 5

    4. Type 5 and 11

  20. You have successfully scanned a system and identified the following port 80 open. What is the next step you should perform?

    1. Attempt to go to the web page and examine the source code.

    2. Use FTP to connect to port 80.

    3. Telnet to the open port and grab the banner.

    4. Attempt to connect to port 443.

  • + Share This
  • 🔖 Save To Your Account

Pearson IT Certification Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Pearson IT Certification and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Pearson IT Certification products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by Adobe Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.pearsonitcertification.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020