CEH v7 4.3
Front
QUESTION NO: 1 Which of the following countermeasure can specifically protect against
both the MAC Flood and MAC Spoofing attacks?
A. Configure Port Security on the switch
B. Configure Port Recon on the switch
C. Configure Switch Mapping
D. Configure Multiple Recognition on the switch
QUESTION NO: 2 Jimmy, an attacker, knows that he can take advantage of poorly designed
input validation routines to create or alter SQL commands to gain access to private data or
execute commands in the database. What technique does Jimmy use to compromise a
database?
A. Jimmy can submit user input that executes an operating system command to compromise a
target system
B. Jimmy can gain control of system to flood the target system with requests, preventing
legitimate users from gaining access
C. Jimmy can utilize an incorrect configuration that leads to access with higher-than expected
privilege of the database
D. Jimmy can utilize this particular database threat that is an SQL injection technique to
penetrate a target system
Back
Answer: A
Explanation:
Answer: D
Explanation:
QUESTION NO: 3 This IDS defeating technique works by splitting a datagram (or packet)
into multiple fragments and the IDS will not spot the true nature of the fully assembled
datagram. The datagram is not reassembled until it reaches its final destination. It would be a
processor-intensive task for IDS to reassemble all fragments itself, and on a busy system the
packet will slip through the IDS onto the network. What is this technique called?
A. IP Routing or Packet Dropping
B. IDS Spoofing or Session Assembly
C. IP Fragmentation or Session Splicing
D. IP Splicing or Packet Reassembly
Answer: C
Explanation:
QUESTION NO: 4 If a competitor wants to cause damage to your organization, steal critical
secrets, or put you out of business, they just have to find a job opening, prepare someone to
pass the interview, have that person hired, and they will be in the organization. How would
you prevent such type of attacks?
A. It is impossible to block these attacks
B. Hire the people through third-party job agencies who will vet them for you
C. Conduct thorough background checks before you engage them
D. Investigate their social networking profiles
Answer: C
Explanation:
QUESTION NO: 5 This type of Port Scanning technique splits TCP header into several
packets so that the packet filters are not able to detect what the packets intends to do.
A. UDP Scanning
B. IP Fragment Scanning
Answer: B
Explanation:
1
C. Inverse TCP flag scanning
D. ACK flag scanning
QUESTION NO: 6 Joel and her team have been going through tons of garbage, recycled
paper, and other rubbish in order to find some information about the target they are
attempting to penetrate. How would you call this type of activity?
A. Dumpster Diving
B. Scanning
C. CI Gathering
D. Garbage Scooping
Answer: A
Explanation:
QUESTION NO: 7 Anonymizer sites access the Internet on your behalf, protecting your
personal information from disclosure. An anonymizer protects all of your computer\'s
identifying information while it surfs for you, enabling you to remain at least one step
removed from the sites you visit. You can visit Web sites without allowing anyone to gather
information on sites visited by you. Services that provide anonymity disable pop-up windows
and cookies, and conceal visitor\'s IP address. These services typically use a proxy server to
process each HTTP request. When the user requests a Web page by clicking a hyperlink or
typing a URL into their browser, the service retrieves and displays the information using its
own server. The remote server (where the requested Web page resides) receives information
on the anonymous Web surfing service in place of your information. In which situations
would you want to use anonymizer? (Select 3 answers)
A. Increase your Web browsing bandwidth speed by using Anonymizer
B. To protect your privacy and Identity on the Internet
C. To bypass blocking applications that would prevent access to Web sites or parts of sites
that you want to visit.
D. Post negative entries in blogs without revealing your IP identity
QUESTION NO: 8 What type of attack is shown in the following diagram?
A. Man-in-the-Middle (MiTM) Attack
B. Session Hijacking Attack
C. SSL Spoofing Attack
D. Identity Stealing Attack
QUESTION NO: 9 Jack Hacker wants to break into Brown Co.\'s computers and obtain their
secret double fudge cookie recipe. Jack calls Jane, an accountant at Brown Co., pretending to
be an administrator from Brown Co. Jack tells Jane that there has been a problem with some
accounts and asks her to verify her password with him \'\'just to double check our records.\'\'
Jane does not suspect anything amiss, and parts with her password. Jack can now access
Brown Co.\'s computers with a valid user name and password, to steal the cookie recipe.
What kind of attack is being illustrated here?
A. Reverse Psychology
B. Reverse Engineering
C. Social Engineering
D. Spoofing Identity E. Faking Identity
Answer:
B,C,D
Explanation:
Answer: A
Explanation:
Answer: C
Explanation:
QUESTION NO: 10 How do you defend against ARP Spoofing? Select three.
Answer:
2
A. Use ARPWALL system and block ARP spoofing attacks
B. Tune IDS Sensors to look for large amount of ARP traffic on local subnets
C. Use private VLANS
D. Place static ARP entries on servers, workstation and routers
QUESTION NO: 11 TCP SYN Flood attack uses the three-way handshake mechanism. 1. An
attacker at system A sends a SYN packet to victim at system
B. 2. System B sends a SYN/ACK packet to victim
A. 3. As a normal three-way handshake mechanism system A should send an ACK packet to
system B, however, system A does not send an ACK packet to system
B. In this case client B is waiting for an ACK packet from client
A. This status of client B is called _________________
A. \"half-closed\"
B. \"half open\"
C. \"full-open\"
D. \"xmas-open\"
QUESTION NO: 12 Lori is a Certified Ethical Hacker as well as a Certified Hacking
Forensics Investigator working as an IT security consultant. Lori has been hired on by Kiley
Innovators, a large marketing firm that recently underwent a string of thefts and corporate
espionage incidents. Lori is told that a rival marketing company came out with an exact
duplicate product right before Kiley Innovators was about to release it. The executive team
believes that an employee is leaking information to the rival company. Lori questions all
employees, reviews server logs, and firewall logs; after which she finds nothing. Lori is then
given permission to search through the corporate email system. She searches by email being
sent to and sent from the rival marketing company. She finds one employee that appears to be
sending very large email to this other marketing company, even though they should have no
reason to be communicating with them. Lori tracks down the actual emails sent and upon
opening them, only finds picture files attached to them. These files seem perfectly harmless,
usually containing some kind of joke. Lori decides to use some special software to further
examine the pictures and finds that each one had hidden text that was stored in each picture.
What technique was used by the Kiley Innovators employee to send information to the rival
marketing company?
A. The Kiley Innovators employee used cryptography to hide the information in the emails
sent
B. The method used by the employee to hide the information was logical watermarking
C. The employee used steganography to hide information in the picture attachments
D. By using the pictures to hide information, the employee utilized picture fuzzing
A,C,D
Explanation:
ARPwall is
used in
protecting
against ARP
spoofing.
Incorrect
Answer: B
Explanation:
Answer: C
Explanation:
QUESTION NO: 13 You run nmap port Scan on 10.0.0.5 and attempt to gain banner/server
information from services running on ports 21, 110 and 123. Here is the output of your scan
results: Which of the following nmap command did you run?
A. nmap -A -sV -p21,110,123 10.0.0.5
B. nmap -F -sV -p21,110,123 10.0.0.5
C. nmap -O -sV -p21,110,123 10.0.0.5
Answer: C
Explanation:
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D. nmap -T -sV -p21,110,123 10.0.0.5
QUESTION NO: 14 How do you defend against Privilege Escalation?
A. Use encryption to protect sensitive data
B. Restrict the interactive logon privileges
C. Run services as unprivileged accounts
D. Allow security settings of IE to zero or Low E. Run users and applications on the least
privileges
QUESTION NO: 15 What does ICMP (type 11, code 0) denote?
A. Source Quench
B. Destination Unreachable
C. Time Exceeded
D. Unknown Type
QUESTION NO: 16 You are the security administrator of Jaco Banking Systems located in
Boston. You are setting up e-banking website (http://www.ejacobank.com) authentication
system. Instead of issuing banking customer with a single password, you give them a printed
list of 100 unique passwords. Each time the customer needs to log into the e-banking system
website, the customer enters the next password on the list. If someone sees them type the
password using shoulder surfing, MiTM or keyloggers, then no damage is done because the
password will not be accepted a second time. Once the list of 100 passwords is almost
finished, the system automatically sends out a new password list by encrypted e-mail to the
customer. You are confident that this security implementation will protect the customer from
password abuse. Two months later, a group of hackers called \"HackJihad\" found a way to
access the one-time password list issued to customers of Jaco Banking Systems. The hackers
set up a fake website (http://www.e-jacobank.com) and used phishing attacks to direct
ignorant customers to it. The fake website asked users for their e-banking username and
password, and the next unused entry from their one-time password sheet. The hackers
collected 200 customer\'s username/passwords this way. They transferred money from the
customer\'s bank account to various offshore accounts. Your decision of password policy
implementation has cost the bank with USD 925,000 to hackers. You immediately shut down
the e-banking website while figuring out the next best security solution What effective
security solution will you recommend in this case?
A. Implement Biometrics based password authentication system. Record the customers face
image to the authentication database
B. Configure your firewall to block logon attempts of more than three wrong tries
C. Enable a complex password policy of 20 characters and ask the user to change the
password immediately after they logon and do not store password histories
D. Implement RSA SecureID based authentication system
Answer:
A,B,C,E
Explanation:
Answer: C
Explanation:
Answer: D
Explanation:
QUESTION NO: 17 More sophisticated IDSs look for common shellcode signatures. But
even these systems can be bypassed, by using polymorphic shellcode. This is a technique
common among virus writers ?it basically hides the true nature of the shellcode in different
disguises. How does a polymorphic shellcode work?
A. They encrypt the shellcode by XORing values over the shellcode, using loader code to
decrypt the shellcode, and then executing the decrypted shellcode
B. They convert the shellcode into Unicode, using loader to convert back to machine code
Answer: A
Explanation:
4
then executing them
C. They reverse the working instructions into opposite order by masking the IDS signatures
D. They compress shellcode into normal instructions, uncompress the shellcode using loader
code and then executing the shellcode
QUESTION NO: 18 SYN Flood is a DOS attack in which an attacker deliberately violates the
three-way handshake and opens a large number of half-open TCP connections. The signature
of attack for SYN Flood contains:
A. The source and destination address having the same value
B. A large number of SYN packets appearing on a network without the corresponding reply
packets
C. The source and destination port numbers having the same value
D. A large number of SYN packets appearing on a network with the corresponding reply
packets
Answer: B
Explanation:
QUESTION NO: 19 Which of the following type of scanning utilizes automated process of
proactively identifying vulnerabilities of the computing systems present on a network?
A. Port Scanning
B. Single Scanning
C. External Scanning
D. Vulnerability Scanning
Answer: D
Explanation:
QUESTION NO: 20 The following script shows a simple SQL injection. The script builds an
SQL query by concatenating hard-coded strings together with a string entered by the user:
The user is prompted to enter the name of a city on a Web form. If she enters Chicago, the
query assembled by the script looks similar to the following: SELECT * FROM OrdersTable
WHERE ShipCity = \'Chicago\' How will you delete the OrdersTable from the database using
SQL Injection?
A. Chicago\'; drop table OrdersTable -B. Delete table\'blah\'; OrdersTable -C. EXEC;
SELECT * OrdersTable > DROP -D. cmdshell\'; \'del c:\\sql\\mydb\\OrdersTable\' //
Answer: A
Explanation:
QUESTION NO: 21 What are the limitations of Vulnerability scanners? (Select 2 answers)
A. There are often better at detecting well-known vulnerabilities than more esoteric ones
B. The scanning speed of their scanners are extremely high
C. It is impossible for any, one scanning product to incorporate all known vulnerabilities in a
timely manner
D. The more vulnerabilities detected, the more tests required E. They are highly expensive
and require per host scan license
Answer: A,C
Explanation:
QUESTION NO: 22 Stephanie works as senior security analyst for a manufacturing company
in Detroit. Stephanie manages network security throughout the organization. Her colleague
Jason told her in confidence that he was able to see confidential corporate information posted
on the external website http://www.jeansclothesman.com. He tries random URLs on the
company\'s website and finds confidential information leaked over the web. Jason says this
happened about a month ago. Stephanie visits the said URLs, but she finds nothing. She is
very concerned about this, since someone should be held accountable if there was sensitive
information posted on the website. Where can Stephanie go to see past versions and pages of
Answer: C
Explanation:
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a website?
A. She should go to the web page Samspade.org to see web pages that might no longer be on
the website
B. If Stephanie navigates to Search.com; she will see old versions of the company website
C. Stephanie can go to Archive.org to see past versions of the company website
D. AddressPast.com would have any web pages that are no longer hosted on the company\'s
website
QUESTION NO: 23 Dan is conducting penetration testing and has found a vulnerability in a
Web Application which gave him the sessionID token via a cross site scripting vulnerability.
Dan wants to replay this token. However, the session ID manager (on the server) checks the
originating IP address as well. Dan decides to spoof his IP address in order to replay the
sessionID. Why do you think Dan might not be able to get an interactive session?
A. Dan cannot spoof his IP address over TCP network
B. The scenario is incorrect as Dan can spoof his IP and get responses
C. The server will send replies back to the spoofed IP address
D. Dan can establish an interactive session only if he uses a NAT
Answer: C
Explanation:
QUESTION NO: 24 Jason works in the sales and marketing department for a very large
advertising agency located in Atlanta. Jason is working on a very important marketing
campaign for his company\'s largest client. Before the project could be completed and
implemented, a competing advertising company comes out with the exact same marketing
materials and advertising, thus rendering all the work done for Jason\'s client unusable. Jason
is questioned about this and says he has no idea how all the material ended up in the hands of
a competitor. Without any proof, Jason\'s company cannot do anything except move on. After
working on another high profile client for about a month, all the marketing and sales material
again ends up in the hands of another competitor and is released to the public before Jason\'s
company can finish the project. Once again, Jason says that he had nothing to do with it and
does not know how this could have happened. Jason is given leave with pay until they can
figure out what is going on. Jason\'s supervisor decides to go through his email and finds a
number of emails that were sent to the competitors that ended up with the marketing material.
The only items in the emails were attached jpg files, but nothing else. Jason\'s supervisor
opens the picture files, but cannot find anything out of the ordinary with them. What
technique has Jason most likely used?
A. Stealth Rootkit Technique
B. ADS Streams Technique
C. Snow Hiding Technique
D. Image Steganography Technique
QUESTION NO: 25 What type of Virus is shown here?
A. Cavity Virus
B. Macro Virus
C. Boot Sector Virus
D. Metamorphic Virus E. Sparse Infector Virus
Answer: D
Explanation:
Answer: E
Explanation:
QUESTION NO: 26 An attacker finds a web page for a target organization that supplies
contact information for the company. Using available details to make the message seem
authentic, the attacker drafts e-mail to an employee on the contact page that appears to come
Answer: A
Explanation:
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from an individual who might reasonably request confidential information, such as a network
administrator. The email asks the employee to log into a bogus page that requests the
employee\'s user name and password or click on a link that will download spyware or other
malicious programming. Google\'s Gmail was hacked using this technique and attackers stole
source code and sensitive data from Google servers. This is highly sophisticated attack using
zero-day exploit vectors, social engineering and malware websites that focused on targeted
individuals working for the company. What is this deadly attack called?
A. Spear phishing attack
B. Trojan server attack
C. Javelin attack
D. Social networking attack
QUESTION NO: 27 Vulnerability scanners are automated tools that are used to identify
vulnerabilities and misconfigurations of hosts. They also provide information regarding
mitigating discovered vulnerabilities. Which of the following statements is incorrect?
A. Vulnerability scanners attempt to identify vulnerabilities in the hosts scanned.
B. Vulnerability scanners can help identify out-of-date software versions, missing patches, or
system upgrades
C. They can validate compliance with or deviations from the organization\'s security policy
D. Vulnerability scanners can identify weakness and automatically fix and patch the
vulnerabilities without user intervention
QUESTION NO: 28 How does traceroute map the route a packet travels from point A to
point B?
A. Uses a TCP timestamp packet that will elicit a time exceeded in transit message
B. Manipulates the value of the time to live (TTL) within packet to elicit a time exceeded in
transit message
C. Uses a protocol that will be rejected by gateways on its way to the destination
D. Manipulates the flags within packets to force gateways into generating error messages
QUESTION NO: 29 How do you defend against DHCP Starvation attack?
A. Enable ARP-Block on the switch
B. Enable DHCP snooping on the switch
C. Configure DHCP-BLOCK to 1 on the switch
D. Install DHCP filters on the switch to block this attack
QUESTION NO: 30 What type of session hijacking attack is shown in the exhibit?
A. Cross-site scripting Attack
B. SQL Injection Attack
C. Token sniffing Attack
D. Session Fixation Attack
Answer: D
Explanation:
Answer: B
Explanation:
Answer: B
Explanation:
Answer: D
Explanation:
QUESTION NO: 31 The SYN flood attack sends TCP connections requests faster than a
machine can process them. -Attacker creates a random source address for each packet -SYN
flag set in each packet is a request to open a new connection to the server from the spoofed IP
address -Victim responds to spoofed IP address, then waits for confirmation that never arrives
(timeout wait is about 3 minutes) -Victim\'s connection table fills up waiting for replies and
Answer:
A,B,D,E
Explanation:
7
ignores new connections -Legitimate users are ignored and will not be able to access the
server How do you protect your network against SYN Flood attacks?
A. SYN cookies. Instead of allocating a record, send a SYN-ACK with a carefully
constructed sequence number generated as a hash of the clients IP address, port number, and
other information. When the client responds with a normal ACK, that special sequence
number will be included, which the server then verifies. Thus, the server first allocates
memory on the third packet of the handshake, not the first.
B. RST cookies - The server sends a wrong SYN/ACK back to the client. The client should
then generate a RST packet telling the server that something is wrong. At this point, the
server knows the client is valid and will now accept incoming connections from that client
normally
C. Check the incoming packet\'s IP address with the SPAM database on the Internet and
enable the filter using ACLs at the Firewall
D. Stack Tweaking. TCP stacks can be tweaked in order to reduce the effect of SYN floods.
Reduce the timeout before a stack frees up the memory allocated for a connection E. Micro
Blocks. Instead of allocating a complete connection, simply allocate a micro record of
16bytes for the incoming SYN object
QUESTION NO: 32 What type of port scan is shown below?
A. Idle Scan
B. FIN Scan
C. XMAS Scan
D. Windows Scan
QUESTION NO: 33 Stephanie works as a records clerk in a large office building in
downtown Chicago. On Monday, she went to a mandatory security awareness class
(Security5) put on by her company\'s IT department. During the class, the IT department
informed all employees that everyone\'s Internet activity was thenceforth going to be
monitored. Stephanie is worried that her Internet activity might give her supervisor reason to
write her up, or worse get her fired. Stephanie\'s daily work duties only consume about four
hours of her time, so she usually spends the rest of the day surfing the web. Stephanie really
enjoys surfing the Internet but definitely does not want to get fired for it. What should
Stephanie use so that she does not get in trouble for surfing the Internet?
A. Stealth IE
B. Stealth Anonymizer
C. Stealth Firefox
D. Cookie Disabler
Answer: B
Explanation:
Answer: B
Explanation:
QUESTION NO: 34 Neil is a network administrator working in Istanbul. Neil wants to setup
a protocol analyzer on his network that will receive a copy of every packet that passes
through the main office switch. What type of port will Neil need to setup in order to
accomplish this?
A. Neil will have to configure a Bridged port that will copy all packets to the protocol
analyzer.
B. Neil will need to setup SPAN port that will copy all network traffic to the protocol
analyzer.
C. He will have to setup an Ether channel port to get a copy of all network traffic to the
analyzer.
Answer: B
Explanation:
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