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Several employees submit the same phishing email to the administrator. The administrator finds that the links in the email are not being blocked by the company’s security device. Which of the following might the administrator do in the short term to prevent the emails from being received?
A. Configure an ACL
B. Implement a URL filter
C. Add the domain to a block list
D. Enable TLS on the mail server
Blocking e-mail is the same as preventing the receipt of those e-mails and this is done by applying a filter. But the filter must be configured to block it. Thus you should add that specific domain from where the e-mails are being sent to the list of addresses that is to be blocked.
A security researcher wants to reverse engineer an executable file to determine if it is malicious. The file was found on an underused server and appears to contain a zero-day exploit. Which of the following can the researcher do to determine if the file is malicious in nature?
A. TCP/IP socket design review
B. Executable code review
C. OS Baseline comparison
D. Software architecture review
Zero-Day Exploits begin exploiting holes in any software the very day it is discovered. It is very difficult to respond to a zero-day exploit. Often, the only thing that you as a security administrator can do is to turn off the service. Although this can be a costly undertaking in terms of productivity, it is the only way to keep the network safe. In this case you want to check if the executable file is malicious. Since a baseline represents a secure state is would be possible to check the nature of the executable file in an isolated environment against the OS baseline.
A security administrator has concerns about new types of media which allow for the mass distribution of personal comments to a select group of people. To mitigate the risks involved with this media, employees should receive training on which of the following?
A. Peer to Peer
B. Mobile devices
C. Social networking
D. Personally owned devices
There many companies that allow full use of social media in the workplace, believing that the marketing opportunities it holds outweigh any loss in productivity. What they are unknowingly minimizing are the threats that exist. Rather than being all new threats, the social networking/media threats tend to fall in the categories of the same old tricks used elsewhere but in a new format. A tweet can be sent with a shortened URL so that it does not exceed the 140- character limit set by Twitter; unfortunately, the user has no idea what the shortened URL leads to. This makes training your employees regarding the risks social networking entails essential.
The information security team does a presentation on social media and advises the participants not to provide too much personal information on social media web sites. This advice would BEST protect people from which of the following?
A. Rainbow tables attacks
B. Brute force attacks
C. Birthday attacks
D. Cognitive passwords attacks
Social Networking Dangers are `amplified’ in that social media networks are designed to mass distribute personal messages. If an employee reveals too much personal information it would be easy for miscreants to use the messages containing the personal information to work out possible passwords.
Pete, the system administrator, has blocked users from accessing social media web sites. In addition to protecting company information from being accidentally leaked, which additional security benefit does this provide?
A. No competition with the company’s official social presence
B. Protection against malware introduced by banner ads
C. Increased user productivity based upon fewer distractions
D. Elimination of risks caused by unauthorized P2P file sharing
Banner, or header information messages sent with data to find out about the system(s) does happen. Banners often identify the host, the operating system running on it, and other information that can be useful if you are going to attempt to later breach the security of it.
Which of the following is a security risk regarding the use of public P2P as a method of collaboration?
A. Data integrity is susceptible to being compromised.
B. Monitoring data changes induces a higher cost.
C. Users are not responsible for data usage tracking.
D. Limiting the amount of necessary space for data storage.
Peer-to-peer (P2P) networking is commonly used to share files such as movies and music, but you must not allow users to bring in devices and create their own little networks. All networking must be done through administrators and not on a P2P basis. Data integrity can easily be compromised when using public P2P networking.
Which of the following has serious security implications for large organizations and can potentially allow an attacker to capture conversations?
Jabber is a new unified communications application and could possible expose you to attackers that want to capture conversations because Jabber provides a single interface across presence, instant messaging, voice, video messaging, desktop sharing and conferencing.
The use of social networking sites introduces the risk of:
A. Disclosure of proprietary information
B. Data classification issues
C. Data availability issues
D. Broken chain of custody
People and processes must be in place to prevent the unauthorized disclosure or proprietary information and sensitive information s these pose a security risk to companies. With social networking your company can be exposed to as many threats as the amount of users that make use of social networking and are not advised on security policy regarding the use of social networking.
Which of the following statements is MOST likely to be included in the security awareness training about P2P?
A. P2P is always used to download copyrighted material.
B. P2P can be used to improve computer system response.
C. P2P may prevent viruses from entering the network.
D. P2P may cause excessive network bandwidth.
P2P networking by definition involves networking which will reduce available bandwidth for the rest of the users on the network.
A security team has established a security awareness program.
Which of the following would BEST prove the success of the program?
All types of training should be followed up- be tested to see if it worked and how much was learned in the training process. You must follow up and gather training metrics to validate compliance and security posture. By training metrics, we mean some quantifiable method for determining the efficacy of training.
Which of the following is an attack vector that can cause extensive physical damage to a datacenter without physical access?
A. CCTV system access
B. Dial-up access
C. Changing environmental controls
D. Ping of death
Environmental systems include heating, air conditioning, humidity control, fire suppression, and power systems. All of these functions are critical to a well-designed physical plant.
A computer room will typically require full-time environmental control. Changing any of these controls (when it was set to its optimum values) will result in damage.
A company that purchased an HVAC system for the datacenter is MOST concerned with which of the following?
D. Fire suppression
Availability means simply to make sure that the data and systems are available for authorized users. Data backups, redundant systems, and disaster recovery plans all support availability; as does environmental support by means of HVAC.
Which of the following should be connected to the fire alarm system in order to help prevent the spread of a fire in a server room without data loss to assist in an FM-200 deployment?
A. Water base sprinkler system
D. Video surveillance
HVAC refers to heating, ventilation and air-conditioning to allow for a zone-based environmental control measure. The fire-alarm system should ideally also be hooked up to the HVAC so that the HVAC can monitor the changes in heating and ventilation.
Which of the following is a security benefit of providing additional HVAC capacity or increased tonnage in a datacenter?
A. Increased availability of network services due to higher throughput
B. Longer MTBF of hardware due to lower operating temperatures
C. Higher data integrity due to more efficient SSD cooling
D. Longer UPS run time due to increased airflow
The mean time between failures (MTBF) is the measure of the anticipated incidence of failure for a system or component. This measurement determines the component’s anticipated lifetime. If the MTBF of a cooling system is one year, you can anticipate that the system will last for a one-year period; this means that you should be prepared to replace or rebuild the system once a year. If the system lasts longer than the MTBF, your organization receives a bonus. MTBF is helpful in evaluating a system’s reliability and life expectancy. Thus longer MTBF due to lower operating temperatures is a definite advantage
Which of the following fire suppression systems is MOST likely used in a datacenter?
FM200 is a gas and the principle of a gas system is that it displaces the oxygen in the room, thereby removing this essential component of a fi re. in a data center is is the preferred choice of fire suppressant.
When implementing fire suppression controls in a datacenter it is important to:
A. Select a fire suppression system which protects equipment but may harm technicians.
B. Ensure proper placement of sprinkler lines to avoid accidental leakage onto servers.
C. Integrate maintenance procedures to include regularly discharging the system.
D. Use a system with audible alarms to ensure technicians have 20 minutes to evacuate.
Water-based systems can cause serious damage to all electrical equipment and the sprinkler lines in a fire suppression control system should be placed in such a way so as not to leak onto computers when it do get activated because it works with overhead nozzles.
Which of the following should be considered to mitigate data theft when using CAT5 wiring?
B. Environmental monitoring
C. Multimode fiber
D. EMI shielding
EMI Shielding refers to the process of preventing electronic emissions from your computer systems from being used to gather intelligence and preventing outside electronic emissions from disrupting your information-processing abilities. Thus all wiring should be shielded to mitigate data theft.
Environmental control measures include which of the following?
A. Access list
C. Motion detection
D. EMI shielding
Environmental controls include HVAC, Fire Suppression, EMI Shielding, Hot and Cold Aisles, Environmental monitoring as well as Temperature and Humidity controls.
When a new network drop was installed, the cable was run across several fluorescent lights.
The users of the new network drop experience intermittent connectivity.
Which of the following environmental controls was MOST likely overlooked during installation?
A. Humidity sensors
B. EMI shielding
C. Channel interference
D. Cable kinking
Shielding refers to the process of preventing electronic emissions from your computer systems from being used to gather intelligence and preventing outside electronic emissions from disrupting your information-processing abilities. In this case you are experiencing intermittent connectivity since Electro Magnetic Interference (EMI) was not taken into account when running the cables over fluorescent lighting.
The datacenter design team is implementing a system, which requires all servers installed in racks to face in a predetermined direction. AN infrared camera will be used to verify that servers are properly racked. Which of the following datacenter elements is being designed?
A. Hot and cold aisles
B. Humidity control
C. HVAC system
D. EMI shielding
There are often multiple rows of servers located in racks in server rooms.
The rows of servers are known as aisles, and they can be cooled as hot aisles and cold aisles.
With a hot aisle, hot air outlets are used to cool the equipment, whereas with cold aisles, cold air intake is used to cool the equipment. Combining the two, you have cold air intake from below the aisle and hot air outtake above it, providing constant circulation.
Infrared cameras are heat detection measures thus it is hot and cold aisle design elements.
A company is installing a new security measure that would allow one person at a time to be authenticated to an area without human interaction. Which of the following does this describe?
C. A guard
D. Video surveillance
Mantraps make use of electronic locks and are designed to allow you to limit the amount of individual allowed access to an area at any one time.
Key cards at a bank are not tied to individuals, but rather to organizational roles. After a break in, it becomes apparent that extra efforts must be taken to successfully pinpoint who exactly enters secure areas. Which of the following security measures can be put in place to mitigate the issue until a new key card system can be installed?
B. Video surveillance
C. Proximity readers
Video surveillance is making use of a camera, or CCTV that is able to record everything it sees and is always running. This way you will be able to check exactly who enters secure areas.
A datacenter requires that staff be able to identify whether or not items have been removed from the facility. Which of the following controls will allow the organization to provide automated notification of item removal?
B. Environmental monitoring
D. EMI shielding
RFID is radio frequency identification that works with readers that work with 13.56 MHz smart cards and 125 kHz proximity cards and can open turnstiles, gates, and any other physical security safeguards once the signal is read. Fitting out the equipment with RFID will allow you to provide automated notification of item removal in the event of any of the equipped items is taken off the premises.
Datacenter access is controlled with proximity badges that record all entries and exits from the datacenter. The access records are used to identify which staff members accessed the data center in the event of equipment theft. Which of the following MUST be prevented in order for this policy to be effective?
A. Password reuse
C. Social engineering
Tailgating is the term used for someone being so close to you when you enter a building that they are able to come in right behind you without needing to use a key, a card, or any other security device. This should be prevented in this case.
Due to issues with building keys being duplicated and distributed, a security administrator wishes to change to a different security control regarding a restricted area. The goal is to provide access based upon facial recognition. Which of the following will address this requirement?
A. Set up mantraps to avoid tailgating of approved users.
B. Place a guard at the entrance to approve access.
C. Install a fingerprint scanner at the entrance.
D. Implement proximity readers to scan users’ badges.
A guard can be instructed to deny access until authentication has occurred will address the situation adequately.
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