Certified Ethical Hacker 312-50v11 EXAM STUDY complete with solutions graded A+

While performing online banking using a Web browser, a user receives an email that contains a link to an interesting Web site. When the user clicks on the link, another Web browser session starts and displays a video of cats playing the piano. The next business day, the user receives what looks like an email from his bank, indicating that his bank account has been accessed from a foreign country. The email asks the user to call his bank and verify the authorization of a funds transfer that took place. What Web browser-based security vulnerability was exploited to compromise the user? A. Clickjacking B. Cross-Site Scripting C. Cross-Site Request Forgery D. Web form input validation Correct answer- C Which service in a PKI will vouch for the identity of an individual or company? A. KDC B. CR C. CBC D. CA Correct answer- D Identify the web application attack where the attackers exploit vulnerabilities in dynamically generated web pages to inject client-side script into web pages viewed by other users. A. LDAP Injection attack B. Cross-Site Scripting (XSS) C. SQL injection attack D. Cross-Site Request Forgery (CSRF) Correct answer- B User A is writing a sensitive email message to user B outside the local network. User A has chosen to use PKI to secure his message and ensure only user B can read the sensitive email. At what layer of the OSI layer does the encryption and decryption of the message take place? A. Application B. Transport C. Session D. Presentation Correct answer- D A new wireless client is configured to join a 802.11 network. This client uses the same hardware and software as many of the other clients on the network. The client can see the network, but cannot connect. A wireless packet sniffer shows that the Wireless Access Point (WAP) is not responding to the association requests being sent by the wireless client. What is a possible source of this problem? A. The WAP does not recognize the client's MAC address B. The client cannot see the SSID of the wireless network C. Client is configured for the wrong channel D. The wireless client is not configured to use DHCP Correct answer- A If you want to only scan fewer ports than the default scan using Nmap tool, which option would you use? A. -r B. -F C. -P D. -sP Correct answer- B Which of the following is the structure designed to verify and authenticate the identity of individuals within the enterprise taking part in a data exchange? A. SOA B. biometrics C. single sign on D. PKI Correct answer- D You are tasked to perform a penetration test. While you are performing information gathering, you find an employee list in Google. You find the receptionist's email, and you send her an email changing the source email to her boss's email (boss@company). In this email, you ask for a pdf with the information. She reads your email and sends back a pdf with links. You exchange the pdf links with your malicious links (these links contain malware) and send back the modified pdf, saying that the links don't work. She reads your email, opens the links, and her machine gets infected. You now have access to the company network. What testing method did you use? A. Social engineering B. Piggybacking C. Tailgating D. Eavesdropping Correct answer- A If a tester is attempting to ping a target that exists but receives no response or a response that states the destination is unreachable, ICMP may be disabled and the network may be using TCP. Which other option could the tester use to get a response from a host using TCP? A. Traceroute B. Hping C. TCP ping D. Broadcast ping Correct answer- B Which is the first step followed by Vulnerability Scanners for scanning a network? A. OS Detection B. Firewall detection C. TCP/UDP Port scanning D. Checking if the remote host is alive Correct answer- D Which of the following programs is usually targeted at Microsoft Office products? A. Polymorphic virus B. Multipart virus C. Macro virus D. Stealth virus Correct answer- C In an internal security audit, the white hat hacker gains control over a user account and attempts to acquire access to another account's confidential files and information. How can he achieve this? A. Privilege Escalation B. Shoulder-Surfing C. Hacking Active Directory D. Port Scanning Correct answer- A 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 the192.168.1.0/24. Which of the following has occurred? A. The computer is not using a private IP address. B. The gateway is not routing to a public IP address. C. The gateway and the computer are not on the same network. D. The computer is using an invalid IP address. Correct answer- B Identify the UDP port that Network Time Protocol (NTP) uses as its primary means of communication? A. 113 B. 69 C. 123 D. 161 Correct answer- C Due to a slowdown of normal network operations, the IT department decided to monitor internet traffic for all of the employees. From a legal standpoint, what would be troublesome to take this kind of measure? A. All of the employees would stop normal work activities B. IT department would be telling employees who the boss is C. Not informing the employees that they are going to be monitored could be an invasion of privacy. D. The network could still experience traffic slow down. Correct answer- C Which of the following tools performs comprehensive tests against web servers, including dangerous files and CGIs? A. Nikto B. John the Ripper C. Dsniff D. Snort Correct answer- A An incident investigator asks to receive a copy of the event logs from all firewalls, proxy servers, and Intrusion Detection Systems (IDS) on the network of an organization that has experienced a possible breach of security. When the investigator attempts to correlate the information in all of the logs, the sequence of many of the logged events do not match up. What is the most likely cause? A. The network devices are not all synchronized. B. Proper chain of custody was not observed while collecting the logs. C. The attacker altered or erased events from the logs. D. The security breach was a false positive. Correct answer- A DNS cache snooping is a process of determining if the specified resource address is present in the DNS cache records. It may be useful during the examination of the network to determine what software update resources are used, thus discovering what software is installed. What command is used to determine if the entry is present in DNS cache? A. nslookup -fullrecursive B. dnsnooping -rt C. nslookup -norecursive D. dns --snoop Correct answer- C Which of the following is an extremely common IDS evasion technique in the web world? A. Spyware B. Subnetting C. Unicode Characters D. Port Knocking Correct answer- C John the Ripper is a technical assessment tool used to test the weakness of which of the following? A. Passwords B. File permissions C. Firewall rulesets D. Usernames Correct answer- A Some clients of TPNQM SA were redirected to a malicious site when they tried to access the TPNQM main site. Bob, a system administrator at TPNQM SA, found that they were victims of DNS Cache Poisoning. What should Bob recommend to deal with such a threat? A. The use of security agents in clients' computers B. The use of DNSSEC C. The use of double-factor authentication D. Client awareness Correct answer- B During a black-box pen test you attempt to pass IRC traffic over port 80/TCP from a compromised web enabled host. The traffic gets blocked; however, outbound HTTP traffic is unimpeded. What type of firewall is inspecting outbound traffic? A. Circuit B. Stateful C. Application D. Packet Filtering Correct answer- C By using a smart card and pin, you are using a two-factor authentication that satisfies A. Something you are and something you remember B. Something you have and something you know C. Something you know and something you are D. Something you have and something you are Correct answer- B A(n) __________________ is an attack type for a rogue Wi-Fi access point that appears to be a legitimate one offered on the premises, but actually has been set up to eavesdrop on wireless communications. It is the wireless version of the phishing scam. An attacker fools wireless users into connecting a laptop or mobile phone to a tainted hotspot by posing as a legitimate provider. This type of attack may be used to steal the passwords of unsuspecting users by either snooping the communication link or by phishing, which involves setting up a fraudulent web site and luring people there. A. Evil Twin Attack B. Sinkhole Attack C. Collision Attack D. Signal Jamming Attack Correct answer- A 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? A. Place a front-end web server in a demilitarized zone that only handles external web traffic B. Require all employees to change their anti-virus program with a new one C. Move the financial data to another server on the same IP subnet D. Issue new certificates to the web servers from the root certificate authority Correct answer- A What term describes the amount of risk that remains after the vulnerabilities are classified and the countermeasures have been deployed? A. Residual risk B. Impact risk C. Deferred risk D. Inherent risk Correct answer- A Which of the following is the best countermeasure to encrypting ransomwares? A. Use multiple antivirus software B. Pay a ransom C. Keep some generation of off-line backup D. Analyze the ransomware to get decryption key of encrypted data Correct answer- C Session splicing is an IDS evasion technique in which an attacker delivers data in multiple, small sized packets to the target computer, making it very difficult for an IDS to detect the attack signatures. Which tool can be used to perform session splicing attacks? A. tcpsplice B. Burp C. Hydra D. Whisker Correct answer- D You have successfully comprised a server having an IP address of 10.10.0.5. You would like to enumerate all machines in the same network quickly. What is the best Nmap command you will use? A. nmap -T4 -q 10.10.0.0/24 B. nmap -T4 -F 10.10.0.0/24 C. nmap -T4 -r 10.10.1.0/24 D. nmap -T4 -O 10.10.0.0/24 Correct answer- B As a Certified Ethical Hacker, you were contracted by a private firm to conduct an external security assessment through penetration testing. What document describes the specifics of the testing, the associated violations, and essentially protects both the organization's interest and your liabilities as a tester? A. Service Level Agreement B. Project Scope C. Rules of Engagement D. Non-Disclosure Agreement Correct answer- C Which of the following is the BEST way to defend against network sniffing? A. Using encryption protocols to secure network communications B. Register all machines MAC Address in a Centralized Database C. Use Static IP Address D. Restrict Physical Access to Server Rooms hosting Critical Servers Correct answer- A Which of the following is the least-likely physical characteristic to be used in biometric control that supports a large company? A. Iris patterns B. Voice C. Height and Weight D. Fingerprints Correct answer- C Although FTP traffic is not encrypted by default, which layer 3 protocol would allow for end-to-end encryption of the connection? A. SFTP B. IPsec C. SSL D. FTPS Correct answer- B To reach a bank web site, the traffic from workstations must pass through a firewall. You have been asked to review the firewall configuration to ensure that workstations in network 10.10.10.0/24 can only reach the bank web site 10.20.20.1 using https. Which of the following firewall rules meets this requirement? A. if (source matches 10.10.10.0/24 and destination matches 10.20.20.1 and port matches 443) then permit B. if (source matches 10.10.10.0/24 and destination matches 10.20.20.1 and port matches 80 or 443) then permit C. if (source matches 10.20.20.1 and destination matches 10.10.10.0/24 and port matches 443) then permit D. if (source matches 10.10.10.0 and destination matches 10.20.20.1 and port matches 443) then permit Correct answer- A Jim's company regularly performs backups of their critical servers. But the company cannot afford to send backup tapes to an off-site vendor for long-term storage and archiving. Instead, Jim's company keeps the backup tapes in a safe in the office. Jim's company is audited each year, and the results from this year's audit show a risk because backup tapes are not stored off-site. The Manager of Information Technology has a plan to take the backup tapes home with him and wants to know what two things he can do to secure the backup tapes while in transit? A. Encrypt the backup tapes and transport them in a lock box. B. Degauss the backup tapes and transport them in a lock box. C. Hash the backup tapes and transport them in a lock box. D. Encrypt the backup tapes and use a courier to transport them. Correct answer- A You are the Network Admin, and you get a complaint that some of the websites are no longer accessible. You try to ping the servers and find them to be reachable. Then you type the IP address and then you try on the browser, and find it to be accessible. But they are not accessible when you try using the URL. What may be the problem? A. Traffic is Blocked on UDP Port 53 B. Traffic is Blocked on TCP Port 80 C. Traffic is Blocked on TCP Port 54 D. Traffic is Blocked on UDP Port 80 Correct answer- A Which of the following tools is used to detect wireless LANs using the 802.11a/b/g/n WLAN standards on a Linux platform? A. Kismet B. Abel C. Netstumbler D. Nessus Correct answer- A You are working as a Security Analyst in a company XYZ that owns the whole subnet range of 23.0.0.0/8 and 192.168.0.0/8.While monitoring the data, you find a high number of outbound connections. You see that IPs owned by XYZ (Internal) and private IPs are communicating to aSingle Public IP. Therefore, the Internal IPs are sending data to the Public IP.After further analysis, you find out that this Public IP is a blacklisted IP, and the internal communicating devices are compromised. What kind of attack does the above scenario depict? A. Botnet Attack B. Spear Phishing Attack C. Advanced Persistent Threats D. Rootkit Attack Correct answer- A Scenario: 1. Victim opens the attacker's web site. 2. Attacker sets up a web site which contains interesting and attractive content like "Do you want to make $1000 in a day?". 3. Victim clicks to the interesting and attractive content URL. 4. Attacker creates a transparent 'iframe' in front of the URL which the victim attempts to click, so the victim thinks that he/she clicks on the "Do you want to make$1000 in a day?" URL but actually he/she clicks on the content or URL that exists in the transparent 'iframe' which is setup by the attacker. What is the name of the attack which is mentioned in the scenario? A. Session Fixation B. HTML Injection C. HTTP Parameter Pollution D. Clickjacking Attack Correct answer- D A network administrator discovers several unknown files in the root directory of his Linux FTP server. One of the files is a tarball, two are shell script files, and the third is a binary file is named "nc." The FTP server's access logs show that the anonymous user account logged in to the server, uploaded the files, and extracted the contents of the tarball and ran the script using a function provided by the FTP server's software. The ps command shows that the nc file is running as process, and the netstat command shows the nc process is listening on a network port. What kind of vulnerability must be present to make this remote attack possible? A. File system permissions B. Privilege escalation C. Directory traversal D. Brute force login Correct answer- A Which of the following programming languages is most susceptible to buffer overflow attacks, due to its lack of a built-in bounds checking mechanism? Code: #include string.h int main(){ char buffer[8]; strcpy(buffer, "11");} Output: Segmentation fault A. C# B. Python C. Java D. C++ Correct answer- D Internet Protocol Security IPsec is actually a suite pf protocols. Each protocol within the suite provides different functionality. Collective IPsec does everything except. A. Protect the payload and the headers B. Encrypt C. Work at the Data Link Layer D. Authenticate Correct answer- C An attacker attaches a rogue router in a network. He wants to redirect traffic to a LAN attached to his router as part of a man-in-the-middle attack. What measure on behalf of the legitimate admin can mitigate this attack? A. Make sure that legitimate network routers are configured to run routing protocols with authentication. B. Disable all routing protocols and only use static routes C. Only using OSPFv3 will mitigate this risk. D. Redirection of the traffic cannot happen unless the admin allows it explicitly. Correct answer- A Which method of password cracking takes the most time and effort? A. Dictionary attack B. Shoulder surfing C. Rainbow tables D. Brute force Correct answer- D An attacker is trying to redirect the traffic of a small office. That office is using their own mail server, DNS server and NTP server because of the importance of their job. The attacker gain access to the DNS server and redirect the direction to his own IP address. Now when the employees of the office want to go to Google they are being redirected to the attacker machine. What is the name of this kind of attack? A. MAC Flooding B. Smurf Attack C. DNS spoofing D. ARP Poisoning Correct answer- C 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: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:8 A. The host is likely a Linux machine. B. The host is likely a printer. C. The host is likely a router. D. The host is likely a Windows machine. Correct answer- B 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? A. The amount of time and resources that are necessary to maintain a biometric system B. How long it takes to setup individual user accounts C. The amount of time it takes to be either accepted or rejected from when an individual provides identification and authentication information D. The amount of time it takes to convert biometric data into a template on a smart card Correct answer- C You are attempting to run an Nmap port scan on a web server. Which of the following commands would result in a scan of common ports with the least amount of noise in order to evade IDS? A. nmap -A - Pn B. nmap -sP -p-65535 -T5 C. nmap -sT -O -T0 D. nmap -A --host-timeout 99 -T1 Correct answer- C What does the -oX flag do in an Nmap scan? A. Perform an eXpress scan B. Output the results in truncated format to the screen C. Output the results in XML format to a file D. Perform an Xmas scan Correct answer- C A bank stores and processes sensitive privacy information related to home loans. However, auditing has never been enabled on the system. What is the first step that the bank should take before enabling the audit feature? A. Perform a vulnerability scan of the system. B. Determine the impact of enabling the audit feature. C. Perform a cost/benefit analysis of the audit feature. D. Allocate funds for staffing of audit log review. Correct answer- B Which Intrusion Detection System is best applicable for large environments where critical assets on the network need extra scrutiny and is ideal for observing sensitive network segments? A. Honeypots B. Firewalls C. Network-based intrusion detection system (NIDS) D. Host-based intrusion detection system (HIDS) Correct answer- C The collection of potentially actionable, overt, and publicly available information is known as ________________. A. Open-source intelligence B. Real intelligence C. Social intelligence D. Human intelligence Correct answer- A What is one of the advantages of using both symmetric and asymmetric cryptography in SSL/TLS? A. Supporting both types of algorithms allows less-powerful devices such as mobile phones to use symmetric encryption instead. B. Symmetric algorithms such as AES provide a failsafe when asymmetric methods fail. C. Symmetric encryption allows the server to security transmit the session keys out-of- band. D. Asymmetric cryptography is computationally expensive in comparison. However, it is well-suited to securely negotiate keys for use with symmetric cryptography. Correct answer- D The change of a hard drive failure is once every three years. The cost to buy a new hard drive is $300. It will require 10 hours to restore the OS and software to the new hard disk. It will require a further 4 hours to restore the database from the last backup to the new hard disk. The recovery person earns $10/hour.Calculate the SLE, ARO, and ALE. Assume the EF = 1(100%). What is the closest approximate cost of this replacement and recovery operation per year? A. $1320 B. $440 C. $100 D. $146 Correct answer- D What is the known plaintext attack used against DES which gives the result that encrypting plaintext with one DES key followed by encrypting it with a second DES key is no more secure than using a single key? A. Man-in-the-middle attack B. Meet-in-the-middle attack C. Replay attack D. Traffic analysis attack Correct answer- B Steve, a scientist who works in a governmental security agency, developed a technological solution to identify people based on walking patterns and implemented this approach to a physical control access. A camera captures people walking and identifies the individuals using Steve's approach. After that, people must approximate their RFID badges. Both the identifications are required to open the door. In this case, we can say: A. Although the approach has two phases, it actually implements just one authentication factor B. The solution implements the two authentication factors: physical object and physical characteristic C. The solution will have a high level of false positives D. Biological motion cannot be used to identify people Correct answer- B What is not a PCI compliance recommendation? A. Use a firewall between the public network and the payment card data. B. Use encryption to protect all transmission of card holder data over any public network. C. Rotate employees handling credit card transactions on a yearly basis to different departments. D. Limit access to card holder data to as few individuals as possible. Correct answer- C What is the minimum number of network connections in a multihomed firewall? A. 3 B. 5 C. 4 D. 2 Correct answer- D Suppose your company has just passed a security risk assessment exercise. The results display that the risk of the breach in the main company application is 50%. Security staff has taken some measures and implemented the necessary controls. After that, another security risk assessment was performed showing that risk has decreased to 10%. The risk threshold for the application is 20%. Which of the following risk decisions will be the best for the project in terms of its successful continuation with the most business profit? A. Accept the risk B. Introduce more controls to bring risk to 0% C. Mitigate the risk D. Avoid the risk Correct answer- You need to deploy a new web-based software package for your organization. The package requires three separate servers and needs to be available on theInternet. What is the recommended architecture in terms of server placement? A. All three servers need to be placed internally B. A web server facing the Internet, an application server on the internal network, a database server on the internal network C. A web server and the database server facing the Internet, an application server on the internal network D. All three servers need to face the Internet so that they can communicate between themselves Correct answer- B An attacker, using a rogue wireless AP, performed an MITM attack and injected an HTML code to embed a malicious applet in all HTTP connections.When users accessed any page, the applet ran and exploited many machines. Which one of the following tools the hacker probably used to inject HTML code? A. Wireshark B. Ettercap C. Aircrack-ng D. Tcpdump Correct answer- B Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN? A. ESP transport mode B. ESP confidential C. AH permiscuous D. AH Tunnel mode Correct answer- A Hackers often raise the trust level of a phishing message by modeling the email to look similar to the internal email used by the target company. This includes using logos, formatting, and names of the target company. The phishing message will often use the name of the company CEO, President, or Managers. The time a hacker spends performing research to locate this information about a company is known as? A. Exploration B. Investigation C. Reconnaissance D. Enumeration Correct answer- C Which of the following viruses tries to hide from anti-virus programs by actively altering and corrupting the chosen service call interruptions when they are being run? A. Macro virus B. Stealth/Tunneling virus C. Cavity virus D. Polymorphic virus Correct answer- B The "Gray-box testing" methodology enforces what kind of restriction? A. Only the external operation of a system is accessible to the tester. B. The internal operation of a system in only partly accessible to the tester. C. Only the internal operation of a system is known to the tester. D. The internal operation of a system is completely known to the tester. Correct answer- B When analyzing the IDS logs, the system administrator noticed an alert was logged when the external router was accessed from the administrator's Computer to update the router configuration. What type of an alert is this? A. False negative B. True negative C. True positive D. False positive Correct answer- A large company intends to use Blackberry for corporate mobile phones and a security analyst is assigned to evaluate the possible threats. The analyst will use the Blackjacking attack method to demonstrate how an attacker could circumvent perimeter defenses and gain access to the Prometric Online Testing - Reports What tool should the analyst use to perform a Blackjacking attack? A. Paros Proxy B. BBProxy C. Blooover D. BBCrack Correct answer- B When you are getting information about a web server, it is very important to know the HTTP Methods (GET, POST, HEAD, PUT, DELETE, TRACE) that are available because there are two critical methods (PUT and DELETE). PUT can upload a file to the server and DELETE can delete a file from the server. You can detect all these methods (GET, POST, HEAD, PUT, DELETE, TRACE) using NMAP script engine. What Nmap script will help you with this task? A. http-methods B. http enum C. http-headers D. http-git Correct answer- A Todd has been asked by the security officer to purchase a counter-based authentication system. Which of the following best describes this type of system? A. A biometric system that bases authentication decisions on behavioral attributes. B. A biometric system that bases authentication decisions on physical attributes. C. An authentication system that creates one-time passwords that are encrypted with secret keys. D. An authentication system that uses passphrases that are converted into virtual passwords. Correct answer- C Which of the following is a low-tech way of gaining unauthorized access to systems? A. Social Engineering B. Eavesdropping C. Scanning D. Sniffing Correct answer- A Which system consists of a publicly available set of databases that contain domain name registration contact information? A. WHOIS B. CAPTCHA C. IANA D. IETF Correct answer- A Why is a penetration test considered to be more thorough than vulnerability scan? A. Vulnerability scans only do host discovery and port scanning by default. B. A penetration test actively exploits vulnerabilities in the targeted infrastructure, while a vulnerability scan does not typically involve active exploitation. C. It is not - a penetration test is often performed by an automated tool, while a vulnerability scan requires active engagement. D. The tools used by penetration testers tend to have much more comprehensive vulnerability databases. Correct answer- B 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? A. This is a scam as everybody can get a @yahoo address, not the Yahoo customer service employees. B. This is a scam because Bob does not know Scott. C. Bob should write to to verify the identity of Scott. D. This is probably a legitimate message as it comes from a respectable organization. Correct answer- A env x=echo exploit bash cat/etc/passwd What is the Shellshock bash vulnerability attempting to do on a vulnerable Linux host? A. Removes the passwd file B. Changes all passwords in passwd C. Add new user to the passwd file D. Display passwd content to prompt Correct answer- D Which of the following is assured by the use of a hash? A. Authentication B. Confidentiality C. Availability D. Integrity Correct answer- D Which results will be returned with the following Google search query? site: -site:M accounting A. Results from matches on the site that are in the domain but do not include the word accounting. B. Results matching all words in the query. C. Results for matches on and M that include the word "accounting" D. Results matching "accounting" in domain but not on the site M Correct answer- D Email is transmitted across the Internet using the Simple Mail Transport Protocol. SMTP does not encrypt email, leaving the information in the message vulnerable to being read by an unauthorized person. SMTP can upgrade a connection between two mail servers to use TLS. Email transmitted by SMTP over TLS is encrypted. What is the name of the command used by SMTP to transmit email over TLS? A. OPPORTUNISTICTLS B. UPGRADETLS C. FORCETLS D. STARTTLS Correct answer- D In the field of cryptanalysis, what is meant by a "rubber-hose" attack? A. Forcing the targeted keystream through a hardware-accelerated device such as an ASIC. B. A backdoor placed into a cryptographic algorithm by its creator. C. Extraction of cryptographic secrets through coercion or torture. D. Attempting to decrypt ciphertext by making logical assumptions about the contents of the original plaintext. Correct answer- C You are a Network Security Officer. You have two machines. The first machine (192.168.0.99) has snort installed, and the second machine (192.168.0.150) has kiwi syslog installed. You perform a syn scan in your network, and you notice that kiwi syslog is not receiving the alert message from snort. You decide to run wireshark in the snort machine to check if the messages are going to the kiwi syslog machine. What Wireshark filter will show the connections from the snort machine to kiwi syslog machine? A. rt= = 514 && = = 192.168.0.99 B. rt= = 514 && = = 192.168.150 C. rt= = 514 && = = 192.168.0.99 D. rt= = 514 && = = 192.168.0.150 Correct answer- D What two conditions must a digital signature meet? A. Has to be the same number of characters as a physical signature and must be unique. B. Has to be unforgeable, and has to be authentic. C. Must be unique and have special characters. D. Has to be legible and neat. Correct answer- B A company's security policy states that all Web browsers must automatically delete their HTTP browser cookies upon terminating. What sort of security breach is this policy attempting to mitigate? A. Attempts by attackers to access the user and password information stored in the company's SQL database. B. Attempts by attackers to access Web sites that trust the Web browser user by stealing the user's authentication credentials. C. Attempts by attackers to access passwords stored on the user's computer without the user's knowledge. D. Attempts by attackers to determine the user's Web browser usage patterns, including when sites were visited and for how long. Correct answer- B What is correct about digital signatures? A. A digital signature cannot be moved from one signed document to another because it is the hash of the original document encrypted with the private key of the signing party. B. Digital signatures may be used in different documents of the same type. C. A digital signature cannot be moved from one signed document to another because it is a plain hash of the document content. D. Digital signatures are issued once for each user and can be used everywhere until they expire. Correct answer- A An attacker with access to the inside network of a small company launches a successful STP manipulation attack. What will he do next? A. He will create a SPAN entry on the spoofed root bridge and redirect traffic to his computer. B. He will activate OSPF on the spoofed root bridge. C. He will repeat this action so that it escalates to a DoS attack. D. He will repeat the same attack against all L2 switches of the network. Correct answer- A You have gained physical access to a Windows 2008 R2 server, which has an accessible disc drive. When you attempt to boot the server and log in, you are unable to guess the password. In your toolkit, you have an Ubuntu 9.10 Linux LiveCD. Which Linux-based tool can change any user's password or activate disabled Windows accounts? A. John the Ripper B. SET C. CHNTPW D. Cain & Abel Correct answer- C What does a firewall check to prevent particular ports and applications from getting packets into an organization? A. Transport layer port numbers and application layer headers B. Presentation layer headers and the session layer port numbers C. Network layer headers and the session layer port numbers D. Application layer port numbers and the transport layer headers Correct answer- A An attacker has installed a RAT on a host. The attacker wants to ensure that when a user attempts to go to "www.MyPersonalB", the user is directed to a phishing site. Which file does the attacker need to modify? A. B B. Sudoers C. Networks D. Hosts Correct answer- D _________ is a set of extensions to DNS that provide the origin authentication of DNS data to DNS clients (resolvers) so as to reduce the threat of DNS poisoning, spoofing, and similar types of attacks. A. DNSSEC B. Resource records C. Resource transfer D. Zone transfer Correct answer- A Which of the following incident handling process phases is responsible for defining rules, collaborating human workforce, creating a back-up plan, and testing the plans for an organization? A. Preparation phase B. Containment phase C. Identification phase D. Recovery phase Correct answer- A The configuration allows a wired or wireless network interface controller to pass all traffic it receives to the Central Processing Unit (CPU), rather than passing only the frames that the controller is intended to receive. Which of the following is being described? A. Multi-cast mode B. Promiscuous mode C. WEM D. Port forwarding Correct answer-