Free and Premium GAQM CEH-001 Dumps Questions Answers

Which of the following ICMP message types are used for destinations unreachables?

Name two software tools used for OS guessing? (Choose two.

While performing a ping sweep of a subnet you receive an ICMP reply of Code 3/Type 13 for all the pings sent out.

What is the most likely cause behind this response?

Doug is conducting a port scan of a target network. He knows that his client target network has a web server and that there is a mail server also which is up and running. Doug has been sweeping the network but has not been able to elicit any response from the remote target. Which of the following could be the most likely cause behind this lack of response? Select 4.

What type of port scan is shown below?

The following excerpt is taken from a honeyput log. The log captures activities across three days. There are several intrusion attempts; however, a few are successful. Study the log given below and answer the following question:

(Note: The objective of this questions is to test whether the student has learnt about passive OS fingerprinting (which should tell them the OS from log captures): can they tell a SQL injection attack signature; can they infer if a user ID has been created by an attacker and whether they can read plain source – destination entries from log entries.)

What can you infer from the above log?

One of your team members has asked you to analyze the following SOA record. What is the version?

Rutgers.edu.SOA NS1.Rutgers.edu ipad.college.edu (200302028 3600

3600 604800 2400.

Neil notices that a single address is generating traffic from its port 500 to port 500 of several other machines on the network. This scan is eating up most of the network bandwidth and Neil is concerned. As a security professional, what would you infer from this scan?

To what does “message repudiation” refer to what concept in the realm of email security?

A specific site received 91 ICMP_ECHO packets within 90 minutes from 47 different sites. 77 of the ICMP_ECHO packets had an ICMP ID:39612 and Seq:57072. 13 of the ICMP_ECHO packets had an ICMP ID:0 and Seq:0. What can you infer from this information?

Snort has been used to capture packets on the network. On studying the packets, the penetration tester finds it to be abnormal. If you were the penetration tester, why would you find this abnormal?

05/20-17:0645.061034 192.160.13.4:31337 --> 172.16.1.101:1

TCP TTL:44 TOS:0x10 ID:242

***FRP** Seq:0xA1D95  Ack:0x53  Win: 0x400

What is odd about this attack? (Choose the most appropriate statement)

What are two things that are possible when scanning UDP ports? (Choose two.

What is the following command used for?

net use \targetipc$ "" /u:""

Your XYZ trainee Sandra asks you which are the four existing Regional Internet Registry (RIR's)?

You are scanning into the target network for the first time. You find very few conventional ports open. When you attempt to perform traditional service identification by connecting to the open ports, it yields either unreliable or no results. You are unsure of which protocols are being used. You need to discover as many different protocols as possible.

Which kind of scan would you use to achieve this? (Choose the best answer)

Which of the following tools can be used to perform a zone transfer?

The use of alert thresholding in an IDS can reduce the volume of repeated alerts, but introduces which of the following vulnerabilities?

After a client sends a connection request (SYN) packet to the server, the server will respond (SYN-ACK) with a sequence number of its choosing, which then must be acknowledged (ACK) by the client. This sequence number is predictable; the attack connects to a service first with its own IP address, records the sequence number chosen, and then opens a second connection from a forged IP address. The attack doesn't see the SYN-ACK (or any other packet) from the server, but can guess the correct responses. If the source IP address is used for authentication, then the attacker can use the one-sided communication to break into the server. What attacks can you successfully launch against a server using the above technique?

A company is using Windows Server 2003 for its Active Directory (AD). What is the most efficient way to crack the passwords for the AD users?

You are trying to hijack a telnet session from a victim machine with IP address 10.0.0.5 to Cisco router at 10.0.0.1. You sniff the traffic and attempt to predict the sequence and acknowledgement numbers to successfully hijack the telnet session.

Here is the captured data in tcpdump.

What are the next sequence and acknowledgement numbers that the router will send to the victim machine?

You are trying to package a RAT Trojan so that Anti-Virus software will not detect it. Which of the listed technique will NOT be effective in evading Anti-Virus scanner?

Which of the following Exclusive OR transforms bits is NOT correct?

What is the main reason the use of a stored biometric is vulnerable to an attack?

In order to show improvement of security over time, what must be developed?

You are performing a port scan with nmap. You are in hurry and conducting the scans at the fastest possible speed. However, you don't want to sacrifice reliability for speed. If stealth is not an issue, what type of scan should you run to get very reliable results?

Blake is in charge of securing all 20 of his company's servers. He has enabled hardware and software firewalls, hardened the operating systems, and disabled all unnecessary services on all the servers. Unfortunately, there is proprietary AS400 emulation software that must run on one of the servers that requires the telnet service to function properly. Blake is especially concerned about this since telnet can be a very large security risk in an organization. Blake is concerned about how this particular server might look to an outside attacker so he decides to perform some footprinting, scanning, and penetration tests on the server. Blake telnets into the server using Port 80 and types in the following command:

HEAD / HTTP/1.0

After pressing enter twice, Blake gets the following results: What has Blake just accomplished?

The GET method should never be used when sensitive data such as credit card is being sent to a CGI program. This is because any GET command will appear in the URL, and will be logged by any servers. For example, let's say that you've entered your credit card information into a form that uses the GET method. The URL may appear like this:

The GET method appends the credit card number to the URL. This means that anyone with access to a server log will be able to obtain this information. How would you protect from this type of attack?

Keystroke logging is the action of tracking (or logging) the keys struck on a keyboard, typically in a covert manner so that the person using the keyboard is unaware that their actions are being monitored.

How will you defend against hardware keyloggers when using public computers and Internet Kiosks? (Select 4 answers)

During a penetration test, the tester conducts an ACK scan using NMAP against the external interface of the DMZ firewall. NMAP reports that port 80 is unfiltered. Based on this response, which type of packet inspection is the firewall conducting?

John runs a Web server, IDS and firewall on his network. Recently his Web server has been under constant hacking attacks. He looks up the IDS log files and sees no intrusion attempts but the Web server constantly locks up and needs rebooting due to various brute force and buffer overflow attacks but still the IDS alerts no intrusion whatsoever. John becomes suspicious and views the Firewall logs and he notices huge SSL connections constantly hitting his Web server. Hackers have been using the encrypted HTTPS protocol to send exploits to the Web server and that was the reason the IDS did not detect the intrusions. How would John protect his network from these types of attacks?

An attacker is attempting to telnet into a corporation's system in the DMZ. The attacker doesn't want to get caught and is spoofing his IP address. After numerous tries he remains unsuccessful in connecting to the system. The attacker rechecks that the target system is actually listening on Port 23 and he verifies it with both nmap and hping2. He is still unable to connect to the target system. What could be the reason?

Which of the following conditions must be given to allow a tester to exploit a Cross-Site Request Forgery (CSRF) vulnerable web application?

What do you call a pre-computed hash?

Hayden is the network security administrator for her company, a large finance firm based in Miami. Hayden just returned from a security conference in Las Vegas where they talked about all kinds of old and new security threats; many of which she did not know of. Hayden is worried about the current security state of her company's network so she decides to start scanning the network from an external IP address. To see how some of the hosts on her network react, she sends out SYN packets to an IP range. A number of IPs responds with a SYN/ACK response. Before the connection is established she sends RST packets to those hosts to stop the session. She does this to see how her intrusion detection system will log the traffic. What type of scan is Hayden attempting here?

This method is used to determine the Operating system and version running on a remote target system. What is it called?

In which location, SAM hash passwords are stored in Windows 7?

When a normal TCP connection starts, a destination host receives a SYN (synchronize/start) packet from a source host and sends back a SYN/ACK (synchronize acknowledge). The destination host must then hear an ACK (acknowledge) of the SYN/ACK before the connection is established. This is referred to as the "TCP three-way handshake." While waiting for the ACK to the SYN ACK, a connection queue of finite size on the destination host keeps track of connections waiting to be completed. This queue typically empties quickly since the ACK is expected to arrive a few milliseconds after the SYN ACK. How would an attacker exploit this design by launching TCP SYN attack?

A Trojan horse is a destructive program that masquerades as a benign application. The software initially appears to perform a desirable function for the user prior to installation and/or execution, but in addition to the expected function steals information or harms the system.

The challenge for an attacker is to send a convincing file attachment to the victim, which gets easily executed on the victim machine without raising any suspicion. Today's end users are quite knowledgeable about malwares and viruses. Instead of sending games and fun executables, Hackers today are quite successful in spreading the Trojans using Rogue security software.

What is Rogue security software?

Within the context of Computer Security, which of the following statements describes Social Engineering best?

_____________ is a type of symmetric-key encryption algorithm that transforms a fixed-length block of plaintext (unencrypted text) data into a block of ciphertext (encrypted text) data of the same length.

Jess the hacker runs L0phtCrack's built-in sniffer utility that grabs SMB password hashes and stores them for offline cracking. Once cracked, these passwords can provide easy access to whatever network resources the user account has access to. But Jess is not picking up hashes from the network. Why?

Bob has a good understanding of cryptography, having worked with it for many years. Cryptography is used to secure data from specific threats, but it does not secure the application from coding errors. It can provide data privacy; integrity and enable strong authentication but it cannot mitigate programming errors. What is a good example of a programming error that Bob can use to explain to the management how encryption will not address all their security concerns?

William has received a Chess game from someone in his computer programming class through email. William does not really know the person who sent the game very well, but decides to install the game anyway because he really likes Chess.

After William installs the game, he plays it for a couple of hours. The next day, William plays the Chess game again and notices that his machine has begun to slow down. He brings up his Task Manager and sees the following programs running:

What has William just installed?

Yancey is a network security administrator for a large electric company. This company provides power for over 100, 000 people in Las Vegas. Yancey has worked for his company for over 15 years and has become very successful. One day, Yancey comes in to work and finds out that the company will be downsizing and he will be out of a job in two weeks. Yancey is very angry and decides to place logic bombs, viruses, Trojans, and backdoors all over the network to take down the company once he has left. Yancey does not care if his actions land him in jail for 30 or more years, he just wants the company to pay for what they are doing to him. What would Yancey be considered?

You want to know whether a packet filter is in front of 192.168.1.10. Pings to 192.168.1.10 don't get answered. A basic nmap scan of 192.168.1.10 seems to hang without returning any information. What should you do next?

In this attack, a victim receives an e-mail claiming from PayPal stating that their account has been disabled and confirmation is required before activation. The attackers then scam to collect not one but two credit card numbers, ATM PIN number and other personal details.

Ignorant users usually fall prey to this scam. Which of the following statement is incorrect related to this attack?

E-mail tracking is a method to monitor and spy the delivered e-mails to the intended recipient.

Select a feature, which you will NOT be able to accomplish with this probe?

This is an attack that takes advantage of a web site vulnerability in which the site displays content that includes un-sanitized user-provided data.

">See foobar

What is this attack?

In which step Steganography fits in CEH System Hacking Cycle (SHC)

What is the command used to create a binary log file using tcpdump?

Which of the following steganography utilities exploits the nature of white space and allows the user to conceal information in these white spaces?

Which of the following open source tools would be the best choice to scan a network for potential targets?

Which of the following algorithms provides better protection against brute force attacks by using a 160-bit message digest?

The precaution of prohibiting employees from bringing personal computing devices into a facility is what type of security control?

Which system consists of a publicly available set of databases that contain domain name registration contact information?

Which of the following is a primary service of the U.S. Computer Security Incident Response Team (CSIRT)?

Which protocol and port number might be needed in order to send log messages to a log analysis tool that resides behind a firewall?

A technician is resolving an issue where a computer is unable to connect to the Internet using a wireless access point. The computer is able to transfer files locally to other machines, but cannot successfully reach the Internet. When the technician examines the IP address and default gateway they are both on the 192.168.1.0/24. Which of the following has occurred?

Which of the following is a strong post designed to stop a car?

How can a policy help improve an employee's security awareness?

Which of the following is a hardware requirement that either an IDS/IPS system or a proxy server must have in order to properly function?

Which of the following is a preventive control?

A botnet can be managed through which of the following?

Which technical characteristic do Ethereal/Wireshark, TCPDump, and Snort have in common?

Which of the following levels of algorithms does Public Key Infrastructure (PKI) use?

A pentester is using Metasploit to exploit an FTP server and pivot to a LAN. How will the pentester pivot using Metasploit?

A penetration tester is hired to do a risk assessment of a company's DMZ. The rules of engagement states that the penetration test be done from an external IP address with no prior knowledge of the internal IT systems. What kind of test is being performed?

Fingerprinting VPN firewalls is possible with which of the following tools?

What is the problem with this ASP script (login.asp)?

What file system vulnerability does the following command take advantage of?

type c:\anyfile.exe > c:\winnt\system32\calc.exe:anyfile.exe

Jayden is a network administrator for her company. Jayden wants to prevent MAC spoofing on all the Cisco switches in the network. How can she accomplish this?

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.

You are the security administrator of Jaco Banking Systems located in Boston. You are setting up e-banking website 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 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?

Most cases of insider abuse can be traced to individuals who are introverted, incapable of dealing with stress or conflict, and frustrated with their job, office politics, and lack of respect or promotion. Disgruntled employees may pass company secrets and intellectual property to competitors for monitory benefits.

Here are some of the symptoms of a disgruntled employee:

a. Frequently leaves work early, arrive late or call in sick

b. Spends time surfing the Internet or on the phone

c. Responds in a confrontational, angry, or overly aggressive way to simple requests or comments

d. Always negative; finds fault with everything

These disgruntled employees are the biggest threat to enterprise security. How do you deal with these threats? (Select 2 answers)

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?

Which of the following type of scanning utilizes automated process of proactively identifying vulnerabilities of the computing systems present on a network?

Which of the following statements would NOT be a proper definition for a Trojan Horse?

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?

What does ICMP (type 11, code 0) denote?

You are the Security Administrator of Xtrinity, Inc. You write security policies and conduct assessments to protect the company's network. During one of your periodic checks to see how well policy is being observed by the employees, you discover an employee has attached cell phone 3G modem to his telephone line and workstation. He has used this cell phone 3G modem to dial in to his workstation, thereby bypassing your firewall. A security breach has occurred as a direct result of this activity. The employee explains that he used the modem because he had to download software for a department project. How would you resolve this situation?

Samuel is the network administrator of DataX Communications, Inc. He is trying to configure his firewall to block password brute force attempts on his network. He enables blocking the intruder's IP address for a period of 24 hours' time after more than three unsuccessful attempts. He is confident that this rule will secure his network from hackers on the Internet.

But he still receives hundreds of thousands brute-force attempts generated from various IP addresses around the world. After some investigation he realizes that the intruders are using a proxy somewhere else on the Internet which has been scripted to enable the random usage of various proxies on each request so as not to get caught by the firewall rule.

Later he adds another rule to his firewall and enables small sleep on the password attempt so that if the password is incorrect, it would take 45 seconds to return to the user to begin another attempt. Since an intruder may use multiple machines to brute force the password, he also throttles the number of connections that will be prepared to accept from a particular IP address. This action will slow the intruder's attempts.

Samuel wants to completely block hackers brute force attempts on his network.

What are the alternatives to defending against possible brute-force password attacks on his site?

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?

Consider the following code:

text=

If an attacker can trick a victim user to click a link like this, and the Web application does not validate input, then the victim's browser will pop up an alert showing the users current set of cookies. An attacker can do much more damage, including stealing passwords, resetting your home page, or redirecting the user to another Web site.

What is the countermeasure against XSS scripting?

You receive an e-mail with the following text message.

"Microsoft and HP today warned all customers that a new, highly dangerous virus has been discovered which will erase all your files at midnight. If there's a file called hidserv.exe on your computer, you have been infected and your computer is now running a hidden server that allows hackers to access your computer. Delete the file immediately. Please also pass this message to all your friends and colleagues as soon as possible."

You launch your antivirus software and scan the suspicious looking file hidserv.exe located in c:\windows directory and the AV comes out clean meaning the file is not infected. You view the file signature and confirm that it is a legitimate Windows system file "Human Interface Device Service".

What category of virus is this?

An attacker has successfully compromised a remote computer. Which of the following comes as one of the last steps that should be taken to ensure that the compromise cannot be traced back to the source of the problem?

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 the 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 172.16.40.65

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:89

A security consultant decides to use multiple layers of anti-virus defense, such as end user desktop anti-virus and E-mail gateway. This approach can be used to mitigate which kind of attack?

A consultant has been hired by the V.P. of a large financial organization to assess the company's security posture. During the security testing, the consultant comes across child pornography on the V.P.'s computer. What is the consultant's obligation to the financial organization?

The intrusion detection system at a software development company suddenly generates multiple alerts regarding attacks against the company's external webserver, VPN concentrator, and DNS servers. What should the security team do to determine which alerts to check first?

Which of the following is an advantage of utilizing security testing methodologies to conduct a security audit?

Which of the following is an example of two factor authentication?

A security policy will be more accepted by employees if it is consistent and has the support of

Which of the following is an application that requires a host application for replication?

Which of the following processes of PKI (Public Key Infrastructure) ensures that a trust relationship exists and that a certificate is still valid for specific operations?

How can a rootkit bypass Windows 7 operating system’s kernel mode, code signing policy?

What is the purpose of conducting security assessments on network resources?

Which tool can be used to silently copy files from USB devices?

Which of the following is an example of IP spoofing?

How can telnet be used to fingerprint a web server?

An engineer is learning to write exploits in C++ and is using the exploit tool Backtrack. The engineer wants to compile the newest C++ exploit and name it calc.exe. Which command would the engineer use to accomplish this?

Which results will be returned with the following Google search query?

site:target.com -site:Marketing.target.com accounting

Bluetooth uses which digital modulation technique to exchange information between paired devices?

A file integrity program such as Tripwire protects against Trojan horse attacks by:

What file system vulnerability does the following command take advantage of?

type c:\anyfile.exe > c:\winnt\system32\calc.exe:anyfile.exe

A user on your Windows 2000 network has discovered that he can use L0phtcrack to sniff the SMB exchanges which carry user logons. The user is plugged into a hub with 23 other systems. However, he is unable to capture any logons though he knows that other users are logging in.

What do you think is the most likely reason behind this?

When discussing passwords, what is considered a brute force attack?

Which of the following represents the initial two commands that an IRC client sends to join an IRC network?

Susan has attached to her company’s network. She has managed to synchronize her boss’s sessions with that of the file server. She then intercepted his traffic destined for the server, changed it the way she wanted to and then placed it on the server in his home directory. What kind of attack is Susan carrying on?

Windows LAN Manager (LM) hashes are known to be weak. Which of the following are known weaknesses of LM? (Choose three)

If a token and 4-digit personal identification number (PIN) are used to access a computer system and the token performs off-line checking for the correct PIN, what type of attack is possible?

How can you determine if an LM hash you extracted contains a password that is less than 8 characters long?

After an attacker has successfully compromised a remote computer, what would be one of the last steps that would be taken to ensure that the compromise is not traced back to the source of the problem?

Exhibit:

You have captured some packets in Ethereal. You want to view only packets sent from 10.0.0.22. What filter will you apply?

What ports should be blocked on the firewall to prevent NetBIOS traffic from not coming through the firewall if your network is comprised of Windows NT, 2000, and XP?(Choose all that apply.

Which one of the following instigates a SYN flood attack?

_________ is a tool that can hide processes from the process list, can hide files, registry entries, and intercept keystrokes.

What is a NULL scan?

Which definition among those given below best describes a covert channel?

Jason's Web server was attacked by a trojan virus. He runs protocol analyzer and notices that the trojan communicates to a remote server on the Internet. Shown below is the standard "hexdump" representation of the network packet, before being decoded. Jason wants to identify the trojan by looking at the destination port number and mapping to a trojan-port number database on the Internet. Identify the remote server's port number by decoding the packet?

____________ will let you assume a users identity at a dynamically generated web page or site.

Why do you need to capture five to ten million packets in order to crack WEP with AirSnort?

In order to attack a wireless network, you put up an access point and override the signal of the real access point. As users send authentication data, you are able to capture it. What kind of attack is this?

In order to attack a wireless network, you put up an access point and override the signal of the real access point. As users send authentication data, you are able to capture it. What kind of attack is this?

Sandra is conducting a penetration test for XYZ.com. She knows that XYZ.com is using wireless networking for some of the offices in the building right down the street. Through social engineering she discovers that they are using 802.11g. Sandra knows that 802.11g uses the same 2.4GHz frequency range as 802.11b. Using NetStumbler and her 802.11b wireless NIC, Sandra drives over to the building to map the wireless networks. However, even though she repositions herself around the building several times, Sandra is not able to detect a single AP.

What do you think is the reason behind this?

Clive is conducting a pen-test and has just port scanned a system on the network. He has identified the operating system as Linux and been able to elicit responses from ports 23, 25 and 53. He infers port 23 as running Telnet service, port 25 as running SMTP service and port 53 as running DNS service. The client confirms these findings and attests to the current availability of the services. When he tries to telnet to port 23 or 25, he gets a blank screen in response. On typing other commands, he sees only blank spaces or underscores symbols on the screen. What are you most likely to infer from this?

Which of the following buffer overflow exploits are related to Microsoft IIS web server? (Choose three)

In an attempt to secure his wireless network, Bob turns off broadcasting of the SSID. He concludes that since his access points require the client computer to have the proper SSID, it would prevent others from connecting to the wireless network. Unfortunately unauthorized users are still able to connect to the wireless network.

Why do you think this is possible?

Windump is the windows port of the famous TCPDump packet sniffer available on a variety of platforms. In order to use this tool on the Windows platform you must install a packet capture library.

What is the name of this library?

Which of the following is one of the key features found in a worm but not seen in a virus?

Peter is a Network Admin. He is concerned that his network is vulnerable to a smurf attack. What should Peter do to prevent a smurf attack?

Select the best answer.

Which of the following statements best describes the term Vulnerability?