GSNA | Far Out GSNA Testing Software For GIAC Systems And Network Auditor Certification

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NEW QUESTION 1

One of the sales people in your company complains that sometimes he gets a lot of unsolicited messages on his PD A. After asking a few questions, you determine that the issue only occurs in crowded areas like airports. What is the most likely problem?

  • A. Spam
  • B. Blue snarfing
  • C. A virus
  • D. Blue jacking

Answer: D

Explanation:

Blue jacking is the process of using another bluetooth device that is within range (about 30' or less) and sending unsolicited messages to the target. Answer B is incorrect. Blue snarfing is a process whereby the attacker actually takes control of the phone. Perhaps copying data or even making calls. Answer C is incorrect. A virus would not cause unsolicited messages. Adware might, but not a virus. Answer A is incorrect. Spam would not be limited to when the person was in a crowded area.

NEW QUESTION 2

You work as the Network Administrator for XYZ CORP. The company has a Linux-based network. You are a root user on the Red Hat operating system. You want to see first five lines of the file /etc/passwd. Which of the following commands should you use to accomplish the task?

  • A. head -n 5 /etc/passwd
  • B. head 5 -n /etc/passwd
  • C. tail -n 5 /etc/passwd
  • D. head /etc/passwd

Answer: A

Explanation:

The head -n 5 /etc/passwd command will show the first 5 lines of the file
/etc/passwd.

NEW QUESTION 3

Victor wants to use Wireless Zero Configuration (WZC) to establish a wireless network connection using his computer running on Windows XP operating system. Which of the following are the most likely threats to his computer? (Choose two)

  • A. Information of probing for networks can be viewed using a wireless analyzer and may be used to gain access.
  • B. Attacker can use the Ping Flood DoS attack if WZC is used.
  • C. Attacker by creating a fake wireless network with high power antenna cause Victor's computer to associate with his network to gain access.
  • D. It will not allow the configuration of encryption and MAC filterin
  • E. Sending information is not secure on wireless network.

Answer: AC

Explanation:

Wireless Zero Configuration (WZC), also known as Wireless Auto Configuration, or WLAN AutoConfig is a wireless connection management utility included with Microsoft Windows XP and later operating systems as a service that dynamically selects a wireless network to connect to based on a user's preferences and various default settings. This can be used instead of, or in the absence of, a wireless network utility from the manufacturer of a computer's wireless networking device. The drivers for the wireless adapter query the NDIS Object IDs and pass the available network names to the service. WZC also introduce some security threats, which are as follows: WZC will probe for networks that are already connected. This information can be viewed by anyone using a wireless analyzer and can be used to set up fake access points to connect. WZC attempts to connect to the wireless network with the strongest signal. Attacker can create fake wireless networks with high- power antennas and cause computers to associate with his access point. Answer D is incorrect. WZC does not interfere in the configuration of encryption and MAC filtering. Answer B is incorrect. In a ping flood attack, an attacker sends a large number of ICMP packets to the target computer using the ping command, i.e., ping -f target_IP_address. When the target computer receives these packets in large quantities, it does not respond and hangs.

NEW QUESTION 4

Which of the following can be the countermeasures to prevent NetBIOS NULL session enumeration in Windows 2000 operating systems?

  • A. Denying all unauthorized inbound connections to TCP port 53
  • B. Disabling SMB services entirely on individual hosts by unbinding WINS Client TCP/IP from the interface
  • C. Editing the registry key HKLM\SYSTEM\CurrentControlSet\LSA and adding the value RestrictAnonymous
  • D. Disabling TCP port 139/445

Answer: BCD

Explanation:

NetBIOS NULL session vulnerabilities are hard to prevent, especially if NetBIOS is needed as part of the infrastructure. One or more of the following steps can be taken to limit NetBIOS NULL session vulnerabilities: 1.Null sessions require access to the TCP 139 or TCP 445 port, which can be disabled by a Network Administrator. 2. A Network Administrator can also disable SMB services entirely on individual hosts by unbinding WINS Client TCP/IP from the interface. 3. A Network Administrator can also restrict the anonymous user by editing the registry values: a.Open regedit32, and go to HKLM\SYSTEM\CurrentControlSet\LSA. b.Choose edit > add value. Value name: RestrictAnonymous Data Type: REG_WORD Value: 2 Answer A is incorrect. TCP port 53 is the default port for DNS zone transfer. Although disabling it can help restrict DNS zone transfer enumeration, it is not useful as a countermeasure against the NetBIOS NULL session enumeration.

NEW QUESTION 5

John works as a Network Auditor for XYZ CORP. The company has a Windows-based network. John wants to conduct risk analysis for the company. Which of the following can be the purpose of this analysis? (Choose three)

  • A. To ensure absolute safety during the audit
  • B. To analyze exposure to risk in order to support better decision-making and proper management of those risks
  • C. To try to quantify the possible impact or loss of a threat
  • D. To assist the auditor in identifying the risks and threats

Answer: BCD

Explanation:

There are many purposes of conducting risk analysis, which are as follows: To try to quantify the possible impact or loss of a threat To analyze exposure to risk in order to support better decision-making and proper management of those risks To support risk-based audit decisions To assist the auditor in determining the audit objectives To assist the auditor in identifying the risks and threats Answer A is incorrect. The analysis of risk does not ensure absolute safety. The main purpose of using a risk-based audit strategy is to ensure that the audit adds value with meaningful information.

NEW QUESTION 6

In which of the following CAATs (Computer Assisted Auditing Techniques) does an auditor perform tests on computer files and databases?

  • A. Parallel Simulation
  • B. Generalized Audit Software (GAS)
  • C. Test Data
  • D. Custom Audit Software (CAS)

Answer: B

Explanation:

CAATs (Computer Assisted Auditing Techniques) are used to test application controls as well as perform substantive tests on sample items. Following are the types of CAATs: Generalized Audit Software (GAS): It allows the auditor to perform tests on computer files and databases. Custom Audit Software (CAS): It is generally written by auditors for specific audit tasks. CAS is necessary when the organization's computer system is not compatible with the auditor's GAS or when the auditor wants to conduct some testing that may not be possible with the GAS. Test Data: The auditor uses test data for testing the application controls in the client's computer programs. The auditor includes simulated valid and invalid test data, used to test the accuracy of the computer system's operations. This technique can be used to check data validation controls and error detection routines, processing logic controls, and arithmetic calculations, to name a few. Parallel Simulation: The auditor must construct a computer simulation that mimics the client's production programs. Integrated Test Facility: The auditor enters test data along with actual data in a normal application run.

NEW QUESTION 7

You are tasked with creating an ACL to apply to Fa0/0 based on the following requirements: The ACL must be protocol specific. All traffic from host 10.10.45.2 and subnet 10.10.1.32/27 must be denied access through the router. Telnet and SSH must be denied for ALL hosts except the management host with the IP address of 10.10.0.100. This management host must not only have Telnet and SSH access, but access to any port in the TCP and UDP suite to any destination. HTTP, HTTPS, and DNS requests must be allowed for all hosts on subnets 10.10.2.0/24 and 10.10.3.0/24 to any destination. All remaining traffic must be denied. Cisco IOS applies an implied deny all at the end of an ACL. However, you must provide this configuration manually so that engineers can see hit counts on the deny all traffic when running the show ip access-lists command. Which of the following sets of commands will you choose to complete the configuration on Router A?

  • A. RouterA(config)#access-list 110 deny ip host 10.10.45.2 any RouterA(config)#access-list 110 deny ip 10.10.1.32 0.0.0.31 any RouterA(config)#access-list 110 permit tcp host 10.10.0.100 any RouterA(config)#access-list 110 permit udp host 10.10.0.100 any RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 80RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 443RouterA(config)#access-list 110 permit udp 10.10.2.0 0.0.1.255 any eq 53 RouterA(config)#access-list 110 deny ip any any RouterA(config)#interface fa0/0RouterA(config-if)#ip access-group 110 out
  • B. RouterA(config)#access-list 110 deny ip host 10.10.45.2 any RouterA(config)#access-list 110 deny ip 10.10.1.32 0.0.0.31 any RouterA(config)#access-list 110 permit ip host 10.10.0.100 any RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 80RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 443RouterA(config)#access-list 110 permit udp 10.10.2.0 0.0.1.255 any eq 53 RouterA(config)#access-list 110 deny ip any any RouterA(config)#interface fa0/0 RouterA(config-if)#ip access-group 110 in
  • C. RouterA(config)#access-list 110 deny ip host 10.10.45.2 any RouterA(config)#access-list 110 deny ip 10.10.1.32 0.0.0.31 any RouterA(config)#access-list 110 permit tcp host 10.10.0.100 any RouterA(config)#access-list 110 permit udp host 10.10.0.100 any RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 80RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.1.255 any eq 443RouterA(config)#access-list 110 permit udp 10.10.2.0 0.0.1.255 any eq 53 RouterA(config)#access-list 110 deny ip any any RouterA(config)#interface fa0/0 RouterA(config-if)#ip access-group 110 in
  • D. RouterA(config)#access-list 99 deny ip host 10.10.45.2 any RouterA(config)#access-list 99 deny ip 10.10.1.32 0.0.0.31 any RouterA(config)#access-list 99 permit tcp host 10.10.0.100 any RouterA(config)#access-list 99 permit udp host 10.10.0.100 any RouterA(config)#access-list 99 permit tcp 10.10.2.0 0.0.1.255 any eq 80RouterA(config)#access-list 99 permit tcp 10.10.2.0 0.0.1.255 any eq 443RouterA(config)#access-list 99 permit udp 10.10.2.0 0.0.1.255 any eq 53 RouterA(config)#access-list 99 deny ip any any RouterA(config)#interface fa0/0 RouterA(config-if)#ip access-group 99 in

Answer: C

Explanation:

This ACL is an extended ACL. It meets the traffic requirements and is applied to Fa0/0 in the appropriate direction of in, which matches traffic going into the interface. In addition, this ACL meets the needs for subnets 10.10.2.0/24 and 10.10.3.0/24 by applying the subnet and wildcard mask of 10.10.2.0 0.0.1.255 for the lines that apply http, https, and dns. These subnets are covered by the wildcard mask 0.0.1.255. This wildcard mask is applied to a range of hosts from 10.10.2.0 through 10.10.3.255 which covers both of the subnets required. This is handy since both subnets are next to each other in their network numbers. Note: If the network numbers were not next to each other, for example 10.10.2.0/24 and 10.10.20.0/24, then the wildcard mask of 0.0.1.255 would be incorrect. A wildcard mask of 0.0.0.255 would be required. The configuration of the ACL would then be applied using the following commands: <!-- Only the relevant commands are displayed --> RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.0.255 any eq 80
RouterA(config)#access-list 110 permit tcp 10.10.2.0 0.0.0.255 any eq 443
RouterA(config)#access-list 110 permit udp 10.10.2.0 0.0.0.255 any eq 53
RouterA(config)#access-list 110 permit tcp 10.10.20.0 0.0.0.255 any eq 80
RouterA(config)#access-list 110 permit tcp 10.10.20.0 0.0.0.255 any eq 443
RouterA(config)#access-list 110 permit udp 10.10.20.0 0.0.0.255 any eq 53

NEW QUESTION 8

Which of the following techniques can be used to determine the network ranges of any network?

  • A. Whois query
  • B. SQL injection
  • C. Snooping
  • D. Web ripping

Answer: A

Explanation:

Whois queries are used to determine the IP address ranges associated with clients. A whois query can be run on most UNIX environments. In a Windows environment, the tools such as WsPingPro and Sam Spade can be used to perform whois queries. Whois queries can also be executed over the Web from www.arin.net and www.networksolutions.com. Answer B is incorrect. A SQL injection attack is a process in which an attacker tries to execute unauthorized SQL statements. These statements can be used to delete data from a database, delete database objects such as tables, views, stored procedures, etc. An attacker can either directly enter the code into input variables or insert malicious code in strings that can be stored in a database. For example, the following line of code illustrates one form of SQL injection attack: query = "SELECT * FROM users WHERE name = '" + userName + "';" This SQL code is designed to fetch the records of any specified username from its table of users. However, if the "userName" variable is crafted in a specific way by a malicious hacker, the SQL statement may do more than the code author intended. For example, if the attacker puts the "userName" value as ' or ''=', the SQL statement will now be as follows: SELECT * FROM users WHERE name = '' OR ''=''; Answer D is incorrect. Web ripping is a technique in which the attacker copies the whole structure of a Web site to the local disk and obtains all files of the Web site. Web ripping helps an attacker to trace the loopholes of the Web site. Answer C is incorrect. Snooping is an activity of observing the content that appears on a computer monitor or watching what a user is typing. Snooping also occurs by using software programs to remotely monitor activity on a computer or network device. Hackers or attackers use snooping techniques and equipment such as keyloggers to monitor keystrokes, capture passwords and login information, and to intercept e-mail and other private communications. Sometimes, organizations also snoop their employees legitimately to monitor their use of organizations' computers and track Internet usage.

NEW QUESTION 9

What does a firewall check to prevent certain ports and applications from getting the packets into an Enterprise?

  • A. The network layer headers and the session layer port numbers
  • B. The transport layer port numbers and the application layer headers
  • C. The application layer port numbers and the transport layer headers
  • D. The presentation layer headers and the session layer port numbers

Answer: B

Explanation:

A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from getting the packets into an Enterprise. Answer A, C, D are incorrect. These information are not checked by a firewall.

NEW QUESTION 10

Sam works as a Network Administrator for XYZ CORP. The computers in the company run Windows Vista operating system, and they are continuously connected to the Internet. This makes the network of the company susceptible to attacks from unauthorized users. Which of the following will Sam choose to protect the network of the company from such attacks?

  • A. Firewall
  • B. Windows Defender
  • C. Software Explorer
  • D. Quarantined items

Answer: A

Explanation:
A firewall is a set of related programs configured to protect private networks connected to the Internet from intrusion. It is used to regulate the network traffic between different computer networks. It permits or denies the transmission of a network packet to its destination based on a set of rules. A firewall is often installed on a separate computer so that an incoming packet does not get into the network directly. Answer B is incorrect. Windows Defender is a software product designed by Microsoft to provide continuous security against malware. If it detects anything suspicious, an alert will appear on the screen. Windows Defender can also be used to scan a computer for suspicious software. It can remove or quarantine any malware or spyware it finds. Answer C is incorrect. Software Explorer is a tool of Windows Defender. It is used to remove, enable, or disable the programs running on a computer. Answer D is incorrect. Quarantined items is a tool of Windows Defender. It is used to remove or restore a program blocked by Windows Defender.

NEW QUESTION 11

In the DNS Zone transfer enumeration, an attacker attempts to retrieve a copy of the entire zone file for a domain from a DNS server. The information provided by the DNS zone can help an attacker gather user names, passwords, and other valuable information. To attempt a zone transfer, an attacker must be connected to a DNS server that is the authoritative server for that zone. Besides this, an attacker can launch a Denial of Service attack against the zone's DNS servers by flooding them with a lot of requests. Which of the following tools can an attacker use to perform a DNS zone transfer?

  • A. DSniff
  • B. Dig
  • C. Host
  • D. NSLookup

Answer: BCD

Explanation:

An attacker can use Host, Dig, and NSLookup to perform a DNS zone transfer. Answer A is incorrect. DSniff is a sniffer that can be used to record network traffic. Dsniff is a set of tools that are used for sniffing passwords, e-mail, and HTTP traffic. Some of the tools of Dsniff include dsniff, arpredirect, macof, tcpkill, tcpnice, filesnarf, and mailsnarf. Dsniff is highly effective for sniffing both switched and shared networks. It uses the arpredirect and macof tools for switching across switched networks. It can also be used to capture authentication information for FTP, telnet, SMTP, HTTP, POP, NNTP, IMAP, etc.

NEW QUESTION 12

Which of the following statements about invalidating a session is true?

  • A. The getCreationTime() method can be called on an invalidated session.
  • B. The invalidate() method belongs to the HttpServletRequest interface.
  • C. A session can be invalidated programmatically as well as using the deployment descriptor.
  • D. The getAttribute(String name) method throws an IllegalArgumentException if called on an invalidated session.

Answer: C

Explanation:

An existing session can be invalidated in the following two ways: Setting timeout in the deployment descriptor: This can be done by specifying timeout between the <session-timeout> tags as follows: <session-config> <session-timeout> 10 </session- timeout> </session-config> This will set the time for session timeout to be ten minutes. Setting timeout programmatically: This will set the timeout for a specific session. The syntax for setting the timeout programmatically is as follows: session.setMaxInactiveInterval(10*60) In this method, the timeout is specified in seconds. Hence, this will set the time for the session timeout to be ten minutes. Answer A is incorrect. The getCreationTime() method returns the time when the session was created. The time is measured in milliseconds since midnight January 1, 1970. This method throws an IllegalStateException if it is called on an invalidated session. Answer D is incorrect. The getAttribute(String name) method of the HttpSession interface returns the value of the named attribute as an object. It returns a null value if no attribute with the given name is bound to the session. This method throws an IllegalStateException if it is called on an invalidated session. Answer B is incorrect. The invalidate() method belongs to the HttpSession interface.

NEW QUESTION 13

You have made a program secure.c to display which ports are open and what types of services are running on these ports. You want to write the program's output to standard output and simultaneously copy it into a specified file. Which of the following commands will you use to accomplish the task?

  • A. cat
  • B. more
  • C. less
  • D. tee

Answer: D

Explanation:

You will use the tee command to write its content to standard output and simultaneously copy it into the specified file. The tee command is used to split the output of a program so that it can be seen on the display and also be saved in a file. It can also be used to capture intermediate output before the data is altered by another command or program. The tee command reads standard input, then writes its content to standard output, and simultaneously copies it into the specified file(s) or variables. The syntax of the tee command is as follows: tee [-a] [-i] [File] where, the -a option appends the output to the end of File instead of writing over it and the -i option is used to ignore interrupts. Answer A is incorrect. The concatenate (cat) command is used to display or print the contents of a file. Syntax: cat filename For example, the following command will display the contents of the /var/log/dmesg file: cat /var/log/dmesg Note: The more command is used in conjunction with the cat command to prevent scrolling of the screen while displaying the contents of a file. Answer C is incorrect. The less command is used to view (but not change) the contents of a text file, one screen at a time. It is similar to the more command. However, it has the extended capability of allowing both forwarB, Dackward navigation through the file. Unlike most Unix text editors/viewers, less does not need to read the entire file before starting; therefore, it has faster load times with large files. The command syntax of the less command is as follows: less [options] file_name Where,
GSNA dumps exhibit
Answer B is incorrect. The more command is used to view (but not modify) the contents of a text file on the terminal screen at a time. The syntax of the more command is as follows: more [options] file_name Where,
GSNA dumps exhibit

NEW QUESTION 14

Mark works as a Network Administrator for We-are-secure Inc. He finds that the We-are- secure server has been infected with a virus. He presents to the company a report that describes the symptoms of the virus. A summary of the report is given below: This virus has a dual payload, as the first payload of the virus changes the first megabyte of the hard drive to zero. Due to this, the contents of the partition tables are deleted and the computer hangs. The second payload replaces the code of the flash BIOS with garbage values. This virus spreads under the Portable Executable File Format under Windows 95, Windows 98, and Windows ME. Which of the following viruses has the symptoms as the one described above?

  • A. I Love You
  • B. Nimda
  • C. Chernobyl
  • D. Melissa

Answer: C

Explanation:

The Chernobyl (CIH) virus is a good example of a dual payload virus. Since the first payload of the virus changes the first megabyte of a computer's hard drive to zero, the contents of the partition tables are deleted, resulting in the computer hanging. The second payload of CIH replaces the code of the flash BIOS with garbage values so that the flash BIOS is unable to give a warning, the end result being that the user is incapable of changing the BIOS settings. CIH spreads under the Portable Executable file format under Windows 95, Windows 98, and Windows ME.
Answer A is incorrect. The I LOVE YOU virus is a VBScript virus in which a victim gets an email attachment titled as "I Love You" with an attachment file named as "Love-Letter-For- You.txt.vbs". When the victim clicks on this attachment, the virus script infects the victim's computer. The virus first scans system's memory for passwords, which are sent back to the virus' creator. In the next step, the virus replicates itself and sends its copy to each address in the victim's Outlook address book. Finally, the virus corrupts files with extensions .vbs, .vbe, .js, .css, .wsh, .sct, .hta, .jpg, .jpeg, .mp2, and .mp3 by overwriting them with a copy of itself. Answer D is incorrect. The Melissa virus infects Word 97 documents and the NORMAL.DOT file of Word 97 and Word 2000. This macro virus resides in word documents containing one macro named as "Melissa". The Melissa virus has the ability to spread itself very fast by using an e-mail. When the document infected by the Melissa virus is opened for the first time, the virus checks whether or not the user has installed Outlook on the computer. If it finds the Outlook, it sends e-mail to 50 addresses from the address book of the Outlook. This virus can spread only by using the Outlook. This virus is also known as W97M/Melissa, Kwyjibo, and Word97.Meliss Answer B is incorrect. Nimda is a mass mailing virus that spreads itself in attachments named README.EXE. It affects Windows 95, 98, ME, NT4, and Windows 2000 users. Nimda uses the Unicode exploit to infect IIS Web servers.

NEW QUESTION 15

You work as a programmer for uCertify.Inc. You have a session object named session1 with an attribute named Attribute1, and an HttpSessionBindingEvent object binding1 bound to session1. Which of the following will be used to retrieve Attribute1?

  • A. Object obj=binding1.getSession().getAttribute("Attribute1");
  • B. Object obj=binding1.getAttribute("Attribute1");
  • C. Long MyAttribute=session1.getAttribute("Attribute1");
  • D. Object obj=session1.getAttribute("Attribute1");
  • E. String str1=session1.getAttribute("Attribute1");

Answer: AD

Explanation:

The following two code are used to retrieve Attribute1: 1.Object obj=session1.getAttribute("Attribute1"); The getAttribute() method is used to retrieve the bound object with the specified name in this session, or null if no object is bound under the name. 2.Object obj=binding1.getSession().getAttribute("Attribute1"); The getSession() gets the current valid session associated with this request. a String object. Answer B is incorrect. The HttpSessionBindingEvent object cannot use the getAttribute() method.

NEW QUESTION 16

You work as a Network Administrator for NTY Inc. The company has a secure wireless network. While auditing the network for maintaining security, you find an unknown node. You want to locate that node. Which tool will you use to pinpoint the actual physical location of the node?

  • A. Kismet
  • B. Ekahau
  • C. WEPCrack
  • D. AirSnort

Answer: B

Explanation:

Ekahau is an easy-to-use powerful and comprehensive tool for network site surveys and optimization. It is an auditing tool that can be used to pinpoint the actual physical location of wireless devices in the network. This tool can be used to make a map of the office and then perform the survey of the office. In the process, if one finds an unknown node, ekahau can be used to locate that node. Answer D is incorrect. AirSnort is a Linux-based WLAN WEP cracking tool that recovers encryption keys. AirSnort operates by passively monitoring transmissions. It uses Ciphertext Only Attack and captures approximately 5 to 10 million packets to decrypt the WEP keys.
Answer A is incorrect. Kismet is a Linux-based 802.11 wireless network sniffer and intrusion detection system. It can work with any wireless card that supports raw monitoring (rfmon) mode. Kismet can sniff 802.11b, 802.11a, 802.11g, and 802.11n traffic. Kismet can be used for the following tasks: To identify networks by passively collecting packets To detect standard named networks To detect masked networks To collect the presence of non-beaconing networks via data traffic Answer C is incorrect. WEPcrack is a wireless network cracking tool that exploits the vulnerabilities in the RC4 Algorithm, which comprises the WEP security parameters. It mainly consists of three tools, which are as follows: WeakIVGen: It allows a user to emulate the encryption output of 802.11 networks to weaken the secret key used to encrypt the network traffic. Prism-getIV: It analyzes packets of information until ultimately matching patterns to the one known to decrypt the secret key. WEPcrack: It pulls the all beneficial data of WeakIVGen and Prism-getIV to decipher the network encryption.

NEW QUESTION 17

You work as a Software Developer for Mansoft Inc. You create an application and use it to create users as members of the local Users group. Which of the following code snippets
imperatively demands that the current user is a member of the local Users group?

  • A. System.AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); PrincipalPermission MyPermission = new PrincipalPermission(null, @"BUILTIN\Users", true); MyPermission.Demand();
  • B. PrincipalPermission MyPermission = new PrincipalPermission(null, @"BUILTIN\Users", true); MyPermission.Demand();
  • C. System.AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); PrincipalPermission MyPermission = new PrincipalPermission(null, @"Users", true); MyPermission.Demand();
  • D. PrincipalPermission MyPermission = new PrincipalPermission(null, @"Users", true); MyPermission.Demand();

Answer: AC

Explanation:

The PrincipalPermission class allows security checks against the active principal. This is done by using the language constructs that are defined for both imperative and declarative security actions. To perform an imperative security demand for membership in a built-in Microsoft Windows group, you must first set the default principal policy to the Windows principal by calling the SetPrincipalPolicy (PrincipalPolicy.WindowsPrincipal) statement. Construct a PrincipalPermission object specifying the group name. To specify the group name, you can provide just the group name, or you can preface the group name with either "BUILTIN\" or the computer name and a backslash. Finally, call the PrincipalPermission.Demand method. There is another method of identifying group membership, i.e. by using the PrincipalPermission class or the PrincipalPermissionAttribute attribute derived from the System.Security.Permissions namespace. The PrincipalPermission object identifies that the identity of the active principal should match its information with the identity information that is passed to its constructor. The identity information contains the user's identity name and role.

NEW QUESTION 18
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