Unit 12- Security

You work as the IT Administrator for a small corporate network. A user inadvertently installed an adware application on his laptop computer. He realized his mistake and used Programs and Features to uninstall it. However, whenever he starts his web browser, his home page is a shopping website of a dubious nature. When he tries to go to a different website, he gets a message that "the proxy server is refusing connections." The proxy server on your network is functioning properly and the user's laptop should be configured to automatically detect the proxy server settings. Your task in this lab is to correct the system configuration parameters that were modified by the malware.

1) Reset the Home page to the default 2) Set the LAN Settings to automatically detect settings 3) Deselect the Proxy Server Option

You are configuring a network firewall to allow SMTP outbound email traffic, and POP3 inbound email traffic. Which of the following IP ports should you open on the firewall? (Select two.)

110 25

To access your company's internal network from home, you use Secure Shell (SSH). The administrator has recently implemented a new firewall at the network perimeter and disabled as many ports as possible. Which port needs to remain open so you can still work from home?

22

You are implementing a wireless access point for a small business. To secure the access point, you decide to implement WPA2 using AES to encrypt the data. The access point's configuration interface asks you to specify the AES key size. The business owner needs the access point to be as secure as possible. Which key size is the largest valid key size that AES can be configured to use?

256

To increase security on your company's internal network, the administrator has disabled as many ports as possible. Now, however, you can browse the Internet, but you are unable to perform secure credit card transactions when making purchases from ecommerce websites. Which port needs to be enabled to allow secure transactions?

443

What is a cookie?

A file saved on your hard drive that tracks Web site preferences and use.

You are configuring the local security policy of a Windows system. You want to require users to create passwords that are at least 10 characters long. You also want to prevent logon after three unsuccessful logon attempts. Which policies should you configure? (Select two.)

Account lockout *threshold* Minimum password length

While browsing the Internet, you notice that your browser displays pop-ups containing advertisements that are related to recent keyword searches you have performed. What is this an example of?

Adware

Which security practice is an example of the Principle of Least Privilege?

All users on a Windows workstation are limited users except for one user who is responsible for maintaining the system.

Which of the following is an important aspect of evidence gathering?

Backing up all log files and audit trails

You want a security solution that protects the entire hard drive, preventing access even when it is moved to another system. Which solution would you choose?

BitLocker

Which of the following functions are performed by proxy servers? (Select two.)

Block employees from accessing certain websites Cache web pages

You have been asked to draft a document related to evidence gathering that contains details about personnel in possession and control of evidence from the time of discovery up through the time of presentation in court. What type of document is this?

Chain of custody

A small business named Widgets, Inc. has hired you to evaluate their wireless network security practices. As you analyze their facility, you note the following using a wireless network locator device: • They use an 802.1 In wireless network. • The wireless network is broadcasting an SSID of Linksys. • The wireless network uses WPA2 with AES security. • Directional access points are positioned around the periphery of the building. Based on this information, what should you recommend your client do to increase their wireless network security? (Select two.)

Change the SSID to something other than the default. Disable SSID broadcast.

You've just finished installing a wireless access point for a client. Which action best protects the access point from unauthorized tampering with its configuration settings?

Changing the administrative password

Which of the following would indicate when a system case cover is removed?

Chassis intrusion detection

Following Windows installation, you enabled the built-in Administrator account. You remove the password for this account. You enable Remote Desktop on your computer using the default settings. From home, you try to access your computer using Remote Desktop using the Administrator account, but you are unable to log on. What should you do?

Configure a password for the Administrator account (Remote desktop requires a Username and Password)

You want to configure your computer so that a password is required before the operating system will load. What should you do?

Configure a user password in the BIOS/UEFI

To tightly control the anti-malware settings on your computer, you elect to update the signature file manually. Even though you vigilantly update the signature file, the machine becomes infected with a new type of malware. Which of the following actions would best prevent this scenario from occurring again?

Configure the software to automatically download the definition file updates as soon as they become available.

You work as the IT Administrator for a small corporate network. A user accidentally installed an adware application on his laptop computer. He realized his mistake and used Programs and Features to uninstall it. However, whenever he starts Internet Explorer, it still automatically goes to a shopping site that appears to be dubious in nature. Your task in this lab is to correct the system configuration parameter that was modified by the adware.

Control Panel -> Network and Internet -> Internet Options -> Connections

You work as the IT Administrator for a small corporate network. A user has inadvertently allowed his Local Area Network settings to be changed during the installation of a free software package. He reports that his browser no longer goes to his usual home page when he opens it and an error sometimes appears in his browser window saying that the proxy server isn't responding. Your company network does not use a proxy server, so the free software installation might have configured his Internet options to use a malicious proxy server. Your tasks in this lab are to do the following: ■ Deselect the option to use a proxy server for your LAN. • Configure www.testout.com as the home page for Internet Explorer.

Control Panel -> Network and Internet -> Internet Options -> Connections -> Advanced Setting Change the TestOut website

Which of the following functions are performed by the TPM?

Create a hash based on installed system components

Which of the following measures will make your wireless network less visible to the casual attacker performing war driving?

Disable SSID broadcast

A small business named Widgets, Inc. has hired you to evaluate their wireless network security practices. As you analyze their facility, you note the following using a wireless network locator device: • They use an 802.1 In wireless network. • The wireless network is broadcasting an SSID of Linksys. • The wireless network uses WPA2 with AES security. • Directional access points are positioned around the periphery of the building. Based on this information, what should you recommend your client do to increase their wireless network security (Select two.)

Disable SSID broadcast. Change the SSID to something other than the default.

You just bought a new notebook. This system uses UEFI firmware and comes with Windows 10 preinstalled. However, you want to use Linux on this system. You download your favorite distribution and install it on the system, removing all Windows partitions on the hard disk in the process. When the installation is complete, you find that the operating system won't load when the system is rebooted. What should you do?

Disable SecureBoot in the UEFI configuration.

One of the Windows workstations you manage has four user accounts defined on it. Two of the users are limited users while the third (your account) is an administrative user. The fourth account is the Guest user account, which has been enabled to allow management employees convenient workstation access. Each limited and administrative user has been assigned a strong password. File and folder permissions have been assigned to prevent users from accessing each other's files. Autorun has been disabled on the system. What should you do to increase the security of this system?

Disable the Guest account.

Your client has hired you to evaluate their wired network security posture. As you tour their facility, you note the following: • Server systems are kept in a locked server room. • User accounts on desktop systems have strong passwords assigned. • A locked door is used to control access to the work area. Users must use ID badges to enter the area. • Users connect their personal mobile devices to their computers using USB cables. • Users work in three 8-hour shifts per day. Each computer is shared by three users. Each user has a limited account on the computer they use. Based on this information, what should you recommend your client do to increase security?

Disable the USB ports on user's workstations.

You are a security consultant and have been hired to evaluate an organization's physical security practices. All employees must pass through a locked door to enter the main work area. Access is restricted using a smart card reader. Network jacks are provided in the reception area such that employees and vendors can access the company network for work-related purposes. Users within the secured work area have been trained to lock their workstations if they will be leaving them for any period of time. What recommendations would you make to this organization to increase their security?

Disable the switch ports connected to the network jacks in the reception area.

When conducting a forensic investigation, and assuming that the attack has been stopped, which of the following actions should you perform first?

Document what's on the screen

What are the most common means of virus distribution? (Select two.)

E-mail Malicious web sites

Which of the following security solutions would prevent a user from reading a file which she did not create?

EFS (Bitlocker= Whole Disk Encryption)

Which of the following actions directly improves system security on Windows systems? (Select two.)

Enable the Windows firewall. Install anti-malware software.

Which of the following features is supplied by WPA2 on a wireless network? (Select two.)

Encryption Authentication

You are configuring the local security policy of a Windows system. You want to prevent users from reusing old passwords. You also want to force them to use a new password for at least 5 days before changing it again. Which policies should you configure? (Select two.)

Enforce password history Minimum password age

Which type of biometric authentication uses the ridges of your skin?

Fingerprint

Which of the following security measures is a form of biometrics?

Fingerprint scanner

Which of the following is the best device to deploy to protect your private network from a public untrusted network?

Firewall

After installing new software a few days ago, your DVD drive tray randomly began to open and close. Today, you were called into your boss's office to discuss why you are calling 900 numbers while at work. Which type of malware would create these symptoms?

Gray ware (• Joke programs that perform annoying yet harmless actions (such as displaying messages or opening/closing the optical drive tray) • Dialer programs that automatically dial long-distance or 900 numbers • Adware and spyware programs)

Which TCP/IP protocol is a secure form of HTTP that uses SSL as a sublayer for security?

HTTPS

Which of the following are common forms of social engineering attack?

Hoax virus information e-mails.

What do biometrics use to perform authentication of identity?

Human characteristics

Two employees cannot access any websites on the Internet, but can still access servers on the local network, including those residing on other subnets. Other employees are not experiencing the same problem. What should you do?

Identify the proxy server name and port number in Internet Options. (don't check the proxy filters)

Your organization is frequently visited by sales reps. While on-site, they frequently plug their notebook systems into any available wall jack, hoping to get Internet connectivity. You are concerned that allowing them to do this could result in the spread of malware throughout your network. What should you do? (Select two.)

Implement MAC address filtering. Implement static IP addressing.

Your organization is frequently visited by sales reps. While on-site, they frequently plug their notebook systems into any available wall jack, hoping to get Internet connectivity. You are concerned that allowing them to do this could result in the spread of malware throughout your network. What should you do? (Select two.)

Implement MAC address filtering. Implement static IP addressing.

A local dentist has contracted with you to implement a network in her new office. Because of security concerns related to patient privacy laws, she has asked that the new network meet the following criteria: • No one from the Internet should be able to access her internal network. • Email messages should be scanned for spam, phishing attacks, and malware before they reach users' workstations. • Employees should be blocked from accessing non-work related web sites, especially sites that contain inappropriate content. • A system should be put in place to detect and prevent external attacks on her network. What should you do?

Implement an all-in-one security appliance.

A small business named BigBikes, Inc. has hired you to evaluate their wireless network security practices. As you analyze their facility, you note the following: • They use an 802.11a wireless network. • The wireless network SSID is set to BWLAN, • The wireless network is not broadcasting the network SSID. • The wireless network uses WPA2 with AES security. • Omni-directional access points are positioned around the periphery of the building. Based on this information, what should you recommend your client do to increase their wireless network security?

Implement directional access points.

A small business named BigBikes, Inc. has hired you to evaluate their wireless network security practices. As you analyze their facility, you note the following: • They use an 802.11a wireless network. • The wireless network SSID is set to BWLAN, • The wireless network is not broadcasting the network SSID. • The wireless network uses WPA2 with AES security. • Omnidirectional access points are positioned around the periphery of the building. Based on this information, what should you recommend your client do to increase their wireless network security?

Implement directional access points.

You provide desktop support at the branch office of a bank. One of the Windows workstations you manage is used by a bank employee to set up new customer accounts and fill out customer loan applications. Each user account on the system has been assigned a strong password. File and folder permissions have been assigned to prevent users from accessing each other's files. What else could you do to increase the security of this system? (Select two.)

Install a privacy filter on the monitor. Secure the system to the desk with a cable lock.

You would like to control Internet access based on users, time of day, and Web sites visited. How can you do this?

Install a proxy server. Allow Internet access only through the proxy server. (application layer)

Which of the following best describes spyware?

It monitors the actions you take on your machine and sends the information back to its originating source

Which of the following protocols establish a secure connection and encrypt data for a VPN? (Select three.)

L2TP PPTP IPSec

While reviewing video files from your organization's security cameras, you notice a suspicious person using piggy-backing to gain access to your building. The individual in question did not have a security badge. Which security measure could you implement to keep this from happening in the future?

Mantraps

A malicious person calls an employee from a cell phone. She tells the employee that she is the vice president over the Accounting department in the employee's company. She relates that she has forgotten her password demands that the employee give her his password so that she can access the reports she needs for an upcoming presentation. She threatens to fire the employee if he does not comply. What kind of attack has occurred in this scenario?

Masquerading

You have purchased a used computer from a computer liquidator. When you boot the computer, you find that there has been a password set on the BIOS. You need to clear the password so that you can edit the CMOS settings. What should you do?

Move the motherboard jumper.

What is the least secure place to locate an omnidirectional access point when creating a wireless network?

Near a window

You are responsible for disposing of several old workstations formerly used by accountants in your organization's Finance department. Before being shipped to a computer recycler, you decide to make sure any old data on the hard drives is erased. To do this, you use the Windows XP Installation CDs that came with these systems to delete all partitions from the hard drives. Have you properly prepared theses systems for disposal?

No, you should use disk wiping software to fully erase the drives.

You want to be able to access your home computer using Remote Desktop while traveling. You enable Remote Desktop, but you find that you cannot access your computer outside of your home network. What should you do?

Open the firewall port for the Remote Desktop protocol.

Match each security policy on the left with the appropriate description on the right. Each security policy may be used once, more than once, or not at all. Provides a high-level overview of the organization's security program. Defines an employee's rights to use company property. Identifies the requirements for credentials used to authenticate to company-owned systems. Identifies a set of rules or standards that define personal behaviors. Sets expectations for user privacy when using company resources. Specifies that user accounts should be locked after a certain number of failed login attempts.

Organizational Security Policy Acceptable Use Policy Password Policy Code of Ethics Acceptable Use Policy Password Policy

Which of the following is a firewall function?

Packet Filtering

You need to enable a screen saver password on the Windows workstations in your organization. Which Control Panel option should you use to do this?

Personalization

A user within your organization received an email relating how an account containing a large sum of money has been frozen by the government of a small African nation. The user was offered a 25% share of this account if she would help the sender transfer it to a bank in the United States. The user responded to the sender and was instructed to send her bank account number so that it could be used to facilitate the transfer. She complied, and then the sender used the information to drain her bank account. What type of attack occurred?

Phishing

Several users have forwarded you an e-mail stating that your company's health insurance provider has just launched a new web site for all employees. To access the site they are told in the e-mail to click a link and provide their personal information. Upon investigation, you discover that your company's health insurance provider did not send this e-mail. What kind of attack just occurred?

Phishing

Which of the following is a form of attack that tricks victims into providing confidential information, such as identity information or logon credentials, through emails or Websites that impersonate an online entity that the victim trusts, such as a financial institution or well-known e-commerce site?

Phishing

You have purchased new computers and will be disposing of your old computers. These computers were previously used for storing highly-sensitive customer order information, including credit card numbers. What should you do prior to getting rid of the computers?

Physically destroy the hard drives with a hammer.

While running a full system scan using your anti-malware software, three files have been identified as possible problems. You want to keep the files intact so you can review them later, but you also need to ensure they can't harm anything else on your computer. What action should you take?

Quarantine the files

The immediate preservation of evidence is paramount when conducting a forensic analysis. Which of the following actions is most likely to destroy critical evidence?

Rebooting the system

You provide desktop support at the branch office of a bank. One of the Windows workstations you manage is used by a bank employee to set up new customer accounts and fill out customer loan applications. Each user account on the system has been assigned a strong password. A cable lock has been installed to prevent it from being stolen. What else could you do to increase the security of this system? (Select two.)

Remove the optical drive Disable all USB ports in the BIOS/UEFI firmware configuration

The chain of custody is used for what purposes?

Retaining evidence integrity by identifying people coming into contact with evidence

You have installed anti-malware software on a computer that only you use. You want to protect the computer from files that you download from the Internet. What should you do next to make sure that there aren't any existing files on your system that are infected? (Select two.)

Run a full scan Download the latest definition files

One of the Windows workstations you manage has three user accounts defined on it. Two of the users are limited users while the third (your account) is an administrative user. Each limited and administrative user been assigned a strong password. File and folder permissions have been assigned to prevent users from accessing each other's files. What else could you do to increase the security of this system? (Select two.)

Set a screensaver password. Disable autorun on the system.

A user is trying to log into her notebook computer. She enters the correct password for her user account, but the system won't let her authenticate, claiming the wrong password has been entered. What's causing the problem?

She has enabled Num Lock, causing numbers to be sent from the keyboard instead of letters.

Which of the following are examples of social engineering? (Select two.)

Shoulder surfing Dumpster diving

You have a set of DVD-RW discs that have been used to archive files for your latest development project. You need to dispose of the discs. Which of the following methods should you use to best prevent extracting data from the discs?

Shredding

Which of the following security technologies stores identification information in either a magnetic strip, radio frequency transmitter, or hardware contacts to authorize access to a computer?

Smart card

Which type of malicious activity can be described as numerous unwanted and unsolicited e-mail messages sent to a wide range of victims?

Spamming

A security incident is currently occurring on the company network. You discover that the attack involves a computer system that is attached to the network. You're not sure yet exactly what kind of damage is being done to the network systems or data. What action should you take first?

Stop the attack and contain the damage by disconnecting the system from the network.

A VPN is used primary for what purpose?

Support secured communications over an untrusted network

An intruder waits near an organization's secured entrance until an employee approaches the entrance and unlocks it with a security badge. The intruder falls in line behind the employee, who assumes the intruder another employee and holds the door open for her. What kind of attack just occurred?

Tailgating

You are a security consultant and an organization has hired you to review their security measures. They are chiefty concerned that they could become the victim of a social engineering attack. What should you recommend they do to mitigate the risk?

Teach users how to recognize and respond to social engineering attacks.

You just bought a new computer. This system uses UEFI firmware and comes with Windows 10 preinstalled. You recently accessed the manufacturer's support website and saw that a UEFI firmware update has been released. You download the update. However, when you try to install the update, an error message is displayed indicating the digital signature on the update file is invalid. Why did this happen?

The update file has been tampered with.

Which of the following is not a form of biometrics?

Token device

You are a security consultant and have been hired to evaluate an organization's physical security practices. All employees must pass through a locked door to enter the main work area. Access is restricted using a biometric fingerprint lock. A receptionist is located next to the locked door in the reception area. She uses an iPad application to log any security events that may occur. She also uses her iPad to complete work tasks as assigned by the organization's CEO. Network jacks are provided in the reception area such that employees and vendors can access the company network for work-related purposes. Users within the secured work area have been trained to lock their workstations if they will be leaving them for any period of time. What recommendations would you make to this organization to increase their security? (Select two.)

Train the receptionist to keep her iPad in a locked drawer when not in use. Disable the network jacks in the reception area.

You have just installed anti-malware software on all computers on your company's network. Which additional actions should you take to help protect systems from malicious software? (Select two.)

Train users to scan removable storage devices before copying files. Configure the software to automatically update its definition files.

Which of the following components, used with BitLocker, is a special hardware chip included on the computer motherboard that contains software in firmware that generates and stores cryptographic keys. ?

Trusted Platform Module (TPM)

Which security measure can be used to generate and store cryptographic keys?

Trusted Platform Module (TPM) (A Trusted Platform Module (TPM) is a special chip on the motherboard that generates and stores cryptographic keys)

You manage two computers with the following user accounts: • Wrk1 has user accounts Mary and Admin. The Mary account does not have a password set; the Admin account does. • Wrk2 has user accounts Mary and Julia. The Mary account has a password set; the Julia account does not. You are working from Wrk2 and would like to access a shared folder on Wrk1. What credentials should you use to access the shared folder?

Type Admin for the username and specify the password (Mary and Admin are account on Wrk1... You need a password, so Admin is the only eligible account)

While trying to log on, a user accidentally typed the wrong password three times, and now the system is locked because he entered too many incorrect passwords. He still remembers his password, but he just typed it wrong. He needs access as quickly as possible. What should you do?

Unlock the account

You have 5 salespersons who work out of your office and who frequently leave their laptops laying on their desk in their cubicles. You are concerned that someone might walk by and take one of these laptops. Which of the following is the best protection to implement to address your concerns?

Use cable locks to chain the laptops to the desks.

You have purchased new computers and will be disposing of your old computers. Instead of recycling the computers, you decide to resell them by placing an ad on the Internet. These computers were previously used for storing sensitive information. What should you do prior to getting rid of the computers?

Use data wiping software to clear the hard drives

You've just installed a wireless access point (WAP) for your organization's network. You know that the radio signals used by the WAP extend beyond your organization's building and are concerned that unauthorized users outside may be able to access your internal network. What can you do to protect the wireless network? (Select two.)

Use the WAP's configuration utility to reduce the radio signal strength. Configure the WAP to filter out unauthorized MAC addresses.

What is the best countermeasure against social engineering

User awareness training

Which of the following is the most common form of authentication?

Username and password

Which of the following wireless security methods uses a common shared key configured on the wireless access point and all wireless clients?

WEP, WPA Personal, and WPA2 Personal

Which of the following is the most secure security protocol for wireless networks?

WPA2

Which of the following provides security for wireless networks?

WPA2

You are configuring a firewall to allow access to a server hosted in the demilitarized zone of your network. You open IP ports 80, 25, 110 and 143. Assuming that no other ports on the firewall need to be configured to provide access, what applications are most likely to be hosted on the server?

Web server, email server (80= Web, 25= SMTP, 110= POP3, 143= IMAP4)

Which of the following forms of networking is highly susceptible to eavesdropping (data interception) and must be secured accordingly?

Wireless

In which of the following situations should you install a firewall?

You want to restrict Internet users from accessing private data on your network.

Which of the following is an example of a strong password?

a8bT11$yi

Which are examples of a strong password? (Select two.)

il0ve2EatIceCr3am TuxP3nguinsRn0v3l