SY0-401 Exam
Shortcuts To SY0-401（411 to 420）
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2021 Mar SY0-401 actual test
Q411. A user has unknowingly gone to a fraudulent site. The security analyst notices the following system change on the user’s host:
Old `hosts’ file:
127.0.0.1 localhost
New `hosts’ file:
127.0.0.1 localhost
5.5.5.5 www.comptia.com
Which of the following attacks has taken place?
A. Spear phishing
B. Pharming
C. Phishing
D. Vishing
Answer: B
Explanation:
We can see in this question that a fraudulent entry has been added to the user’s hosts file. This will point the URL: www.comptia.com to 5.5.5.5 instead of the correct IP address. Similar in nature to e-mail phishing, pharming seeks to obtain personal or private (usually financial related) information through domain spoofing. Rather than being spammed with malicious and mischievous e-mail requests for you to visit spoof Web sites which appear legitimate, pharming 'poisons' a DNS server (or hosts file) by infusing false information into the DNS server, resulting in a user's request being redirected elsewhere. Your browser, however will show you are at the correct Web site, which makes pharming a bit more serious and more difficult to detect. Phishing attempts to scam people one at a time with an e-mail while pharming allows the scammers to target large groups of people at one time through domain spoofing.
Q412. A security technician would like to obscure sensitive data within a file so that it can be transferred without causing suspicion. Which of the following technologies would BEST be suited to accomplish this?
A. Transport Encryption
B. Stream Encryption
C. Digital Signature
D. Steganography
Answer: D
Explanation:
Q413. Which of the following is where an unauthorized device is found allowing access to a network?
A. Bluesnarfing
B. Rogue access point
C. Honeypot
D. IV attack
Answer: B
Explanation:
A rogue access point is a wireless access point that has either been installed on a secure company network without explicit authorization from a local network administrator, or has been created to allow a hacker to conduct a man-in-the-middle attack. Rogue access points of the first kind can pose a security threat to large organizations with many employees, because anyone with access to the premises can install (maliciously or non-maliciously) an inexpensive wireless router that can potentially allow access to a secure network to unauthorized parties. Rogue access points of the second kind target networks that do not employ mutual authentication (client-server server-client) and may be used in conjunction with a rogue RADIUS server, depending on security configuration of the target network. To prevent the installation of rogue access points, organizations can install wireless intrusion prevention systems to monitor the radio spectrum for unauthorized access points.
Q414. Which of the following should a company implement to BEST mitigate from zero-day malicious code executing on employees' computers?
A. Least privilege accounts
B. Host-based firewalls
C. Intrusion Detection Systems
D. Application white listing
Answer: D
Explanation:
Q415. The Chief Information Officer (CIO) receives an anonymous threatening message that says “beware of the 1st of the year”. The CIO suspects the message may be from a former disgruntled employee planning an attack.
Which of the following should the CIO be concerned with?
A. Smurf Attack
B. Trojan
C. Logic bomb
D. Virus
Answer: C
Explanation:
A logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met. For example, a programmer may hide a piece of code that starts deleting files should they ever be terminated from the company. Software that is inherently malicious, such as viruses and worms, often contain logic bombs that execute a certain payload at a pre-defined time or when some other condition is met. This technique can be used by a virus or worm to gain momentum and spread before being noticed. Some viruses attack their host systems on specific dates, such as Friday the 13th or April Fool's Day. Trojans that activate on certain dates are often called "time bombs". To be considered a logic bomb, the payload should be unwanted and unknown to the user of the software. As an example, trial programs with code that disables certain functionality after a set time are not normally regarded as logic bombs.
Far out SY0-401 free practice questions:
Q416. Several employee accounts appear to have been cracked by an attacker. Which of the following should the security administrator implement to mitigate password cracking attacks? (Select TWO).
A. Increase password complexity
B. Deploy an IDS to capture suspicious logins
C. Implement password history
D. Implement monitoring of logins
E. Implement password expiration
F. Increase password length
Answer: A,F
Explanation:
The more difficult a password is the more difficult it is to be cracked by an attacker. By increasing
the password complexity you make it more difficult.
Passwords that are too short can easily be cracked. The more characters used in a password,
combined with the increased complexity will mitigate password cracking attacks.
Q417. An administrator has advised against the use of Bluetooth phones due to bluesnarfing concerns.
Which of the following is an example of this threat?
A. An attacker using the phone remotely for spoofing other phone numbers
B. Unauthorized intrusions into the phone to access data
C. The Bluetooth enabled phone causing signal interference with the network
D. An attacker using exploits that allow the phone to be disabled
Answer: B
Explanation:
Bluesnarfing is the theft of information from a wireless device through a Bluetooth connection. Bluetooth is a high-speed but very short-range wireless technology for exchanging data between desktop and mobile computers, personal digital assistants (PDAs), and other devices. By exploiting a vulnerability in the way Bluetooth is implemented on a mobile phone, an attacker can access information -- such as the user's calendar, contact list and e-mail and text messages --without leaving any evidence of the attack. Other devices that use Bluetooth, such as laptop computers, may also be vulnerable, although to a lesser extent, by virtue of their more complex systems. Operating in invisible mode protects some devices, but others are vulnerable as long as Bluetooth is enabled.
Q418. Which of the following types of wireless attacks would be used specifically to impersonate another WAP in order to gain unauthorized information from mobile users?
A. IV attack
B. Evil twin
C. War driving
D. Rogue access point
Answer: B
Explanation:
An evil twin, in the context of network security, is a rogue or fake wireless access point (WAP) that appears as a genuine hotspot offered by a legitimate provider. In an evil twin attack, an eavesdropper or hacker fraudulently creates this rogue hotspot to collect the personal data of unsuspecting users. Sensitive data can be stolen by spying on a connection or using a phishing technique. For example, a hacker using an evil twin exploit may be positioned near an authentic Wi-Fi access point and discover the service set identifier (SSID) and frequency. The hacker may then send a radio signal using the exact same frequency and SSID. To end users, the rogue evil twin appears as their legitimate hotspot with the same name. In wireless transmissions, evil twins are not a new phenomenon. Historically, they were known as honeypots or base station clones. With the advancement of wireless technology and the use of wireless devices in public areas, it is very easy for novice users to set up evil twin exploits.
Q419. A security administrator must implement a system that will support and enforce the following file system access control model: FILE NAME SECURITY LABEL Employees.doc Confidential Salary.xls Confidential
OfficePhones.xls Unclassified
PersonalPhones.xls Restricted
Which of the following should the security administrator implement?
A. White and black listing
B. SCADA system
C. Trusted OS
D. Version control
Answer: C
Explanation:
Q420. Which of the following should be considered to mitigate data theft when using CAT5 wiring?
A. CCTV
B. Environmental monitoring
C. Multimode fiber
D. EMI shielding
Answer: D
Explanation:
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.