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Q1. A network administrator has a separate user account with rights to the domain administrator group. However, they cannot remember the password to this account and are not able to login to the server when needed. Which of the following is MOST accurate in describing the type of issue the administrator is experiencing?
A. Single sign-on
B. Authorization
C. Access control
D. Authentication
Answer: D
Explanation:
Authentication generally requires one or more of the following:
.
Something you know: a password, code, PIN, combination, or secret phrase.
.
Something you have: a smart card, token device, or key.
.
Something you are: a fingerprint, a retina scan, or voice recognition; often referred to as biometrics, discussed later in this chapter.
.
Somewhere you are: a physical or logical location.
.
Something you do: typing rhythm, a secret handshake, or a private knock.
Q2. A Windows-based computer is infected with malware and is running too slowly to boot and run a malware scanner. Which of the following is the BEST way to run the malware scanner?
A. Kill all system processes
B. Enable the firewall
C. Boot from CD/USB
D. Disable the network connection
Answer: C
Explanation:
Q3. Which of the following protocols is used to authenticate the client and server’s digital certificate?
A. PEAP
B. DNS
C. TLS
D. ICMP
Answer: C
Explanation:
Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications security over a computer network. It uses X.509 certificates and hence asymmetric cryptography to authenticate the counterparty with whom it is communicating, and to exchange a symmetric key.
Q4. Which of the following is a requirement when implementing PKI if data loss is unacceptable?
A. Web of trust
B. Non-repudiation
C. Key escrow
D. Certificate revocation list
Answer: C
Explanation:
Key escrow is a database of stored keys that later can be retrieved. Key escrow addresses the possibility that a third party may need to access keys. Under the conditions of key escrow, the keys needed to encrypt/decrypt data are held in an escrow account (think of the term as it relates to home mortgages) and made available if that third party requests them. The third party in question is generally the government, but it could also be an employer if an employee’s private messages have been called into question.
Q5. Purchasing receives a phone call from a vendor asking for a payment over the phone. The phone number displayed on the caller ID matches the vendor’s number. When the purchasing agent asks to call the vendor back, they are given a different phone number with a different area code.
Which of the following attack types is this?
A. Hoax
B. Impersonation
C. Spear phishing
D. Whaling
Answer: B
Explanation:
In this question, the impersonator is impersonating a vendor and asking for payment. They have managed to ‘spoof’ their calling number so that their caller ID matches the vendor’s number. Impersonation is where a person, computer, software application or service pretends to be someone or something it’s not. Impersonation is commonly non-maliciously used in client/server applications. However, it can also be used as a security threat.
Q6. Environmental control measures include which of the following?
A. Access list
B. Lighting
C. Motion detection
D. EMI shielding
Answer: D
Explanation:
Environmental controls include HVAC, Fire Suppression, EMI Shielding, Hot and Cold Aisles, Environmental monitoring as well as Temperature and Humidity controls.
Q7. Which of the following would Pete, a security administrator, MOST likely implement in order to allow employees to have secure remote access to certain internal network services such as file servers?
A. Packet filtering firewall
B. VPN gateway
C. Switch
D. Router
Answer: B
Explanation:
VPNs are usually employed to allow remote access users to connect to and access the network, and offer connectivity between two or more private networks or LANs. A VPN gateway (VPN router) is a connection point that connects two LANs via a nonsecure network such as the Internet.
Q8. A security administrator is tasked with calculating the total ALE on servers. In a two year period of time, a company has to replace five servers. Each server replacement has cost the company $4,000 with downtime costing $3,000. Which of the following is the ALE for the company?
A. $7,000
B. $10,000
C. $17,500
D. $35,000
Answer: C
Explanation:
SLE × ARO = ALE, where SLE is equal to asset value (AV) times exposure factor (EF); and ARO is the annualized rate of occurrence. SLE =($4000 + $3000) x 5 = $35000 ARO = 2 years Thus per year it would be 50% = 0,5 The ALE is thus $35000 x 0.5 = $17500
Q9. Which device monitors network traffic in a passive manner?
A. Sniffer
B. IDS
C. Firewall
D. Web browser
Answer: A
Explanation:
A sniffer is another name for a protocol analyzer. A protocol analyzer performs its function in a
passive manner. In other words, computers on the network do not know that their data packets
have been captured.
A Protocol Analyzer is a hardware device or more commonly a software program used to capture
network data communications sent between devices on a network. Capturing packets sent from a
computer system is known as packet sniffing.
Well known software protocol analyzers include Message Analyzer (formerly Network Monitor)
from Microsoft and Wireshark (formerly Ethereal).
A sniffer (packet sniffer) is a tool that intercepts data flowing in a network. If computers are
connected to a local area network that is not filtered or switched, the traffic can be broadcast to all
computers contained in the same segment. This doesn’t generally occur, since computers are
generally told to ignore all the comings and goings of traffic from other computers. However, in the
case of a sniffer, all traffic is shared when the sniffer software commands the Network Interface
Card (NIC) to stop ignoring the traffic. The NIC is put into promiscuous mode, and it reads
communications between computers within a particular segment. This allows the sniffer to seize everything that is flowing in the network, which can lead to the unauthorized access of sensitive data. A packet sniffer can take the form of either a hardware or software solution. A sniffer is also known as a packet analyzer.
Q10. Used in conjunction, which of the following are PII? (Select TWO).
A. Marital status
B. Favorite movie
C. Pet’s name
D. Birthday
E. Full name
Answer: D,E
Explanation:
Personally identifiable information (PII) is a catchall for any data that can be used to uniquely identify an individual. This data can be anything from the person’s name to a fingerprint (think biometrics), credit card number, or patient record. A birthday together with a full name makes it personally identifiable information.
Q11. Which of the following concepts is BEST described as developing a new chain of command in the event of a contingency?
A. Business continuity planning
B. Continuity of operations
C. Business impact analysis
D. Succession planning
Answer: D
Explanation:
Succession planning outlines those internal to the organization who have the ability to step into positions when they open. By identifying key roles that cannot be left unfilled and associating internal employees who can step into these roles, you can groom those employees to make sure that they are up to speed when it comes time for them to fill those positions.
Q12. A process in which the functionality of an application is tested without any knowledge of the internal mechanisms of the application is known as:
A. Black box testing
B. White box testing
C. Black hat testing
D. Gray box testing
Answer: A
Explanation:
Black-box testing is a method of software testing that examines the functionality of an application without peering into its internal structures or workings. This method of test can be applied to virtually every level of software testing: unit, integration, system and acceptance. It typically comprises most if not all higher level testing, but can also dominate unit testing as well. Specific knowledge of the application's code/internal structure and programming knowledge in general is not required. The tester is aware of what the software is supposed to do but is not aware of how it does it. For instance, the tester is aware that a particular input returns a certain, invariable output but is not aware of how the software produces the output in the first place.
Q13. Which of the following is BEST used as a secure replacement for TELNET?
A. HTTPS
B. HMAC
C. GPG
D. SSH
Answer: D
Explanation:
SSH transmits both authentication traffic and data in a secured encrypted form, whereas Telnet transmits both authentication credentials and data in clear text.
Q14. HOTSPOT
For each of the given items, select the appropriate authentication category from the dropdown choices.
Instructions: When you have completed the simulation, please select the Done button to submit.
Answer:
Explanation:
Something you are includes fingerprints, retina scans, or voice recognition.
Something you have includes smart cards, token devices, or keys.
Something you know includes a passwords, codes, PINs, combinations, or secret phrases.
Somewhere you are includes a physical location s or logical addresses, such as domain name, an IP address, or a MAC address.
Something you do includes your typing rhythm, a secret handshake, or a private knock.
References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p 285.
Q15. After reviewing the firewall logs of her organization’s wireless APs, Ann discovers an unusually high amount of failed authentication attempts in a particular segment of the building. She remembers that a new business moved into the office space across the street. Which of the following would be the BEST option to begin addressing the issue?
A. Reduce the power level of the AP on the network segment
B. Implement MAC filtering on the AP of the affected segment
C. Perform a site survey to see what has changed on the segment
D. Change the WPA2 encryption key of the AP in the affected segment
Answer: A
Explanation:
Some access points include power level controls that allow you to reduce the amount of output provided if the signal is traveling too far.