CompTIA Security+ SY0-601 Practice Questions100%ACCURATE GRADE A+ GURANTEED

The user installed Trojan horse malware. A user used an administrator account to download and install a software application. After the user launched the .exe extension installer file, the user experienced frequent crashes, slow computer performance, and strange services running when turning on the computer. What most likely happened to cause these issues? A worm A security operations center (SOC) analyst investigates the propagation of a memory-resident virus across the network and notices a rapid consumption of network bandwidth, causing a Denial of Service (DoS). What type of virus is this? PUP (potentially unwanted program) A user purchased a laptop from a local computer shop. After powering on the laptop for the first time, the user noticed a few programs like Norton Antivirus asking for permission to install. How would an IT security specialist classify these programs? -Uses lightweight shellcode -Uses low observable characteristic attacks A fileless malicious software can replicate between processes in memory on a local host or over network shares. What other behaviors and techniques would classify malware as fileless rather than a normal virus? (Select all that apply.) -Computer Bots, -Command & Control An attacker is planning to set up a backdoor that will infect a set of specific computers at an organization, to inflict a set of other intrusion attacks remotely. Which of the following will support the attackers' plan? (Select all that apply.) -Launch a Distributed Denial of Service (DDoS) attack -Establish a connection with a Command and Control server -Launch a mass-mail spam attack If a user's computer becomes infected with a botnet, which of the following can this compromise allow the attacker to do? (Select all that apply.) Have up-to-date backups. If a user's device becomes infected with crypto-malware, which of the following is the best way to mitigate this compromise? A logic bomb A security specialist discovers a malicious script on a computer. The script is set to execute if the administrator's account becomes disabled. What type of malware did the specialist discover? Spyware infected the computers. End-users at an organization contact the cybersecurity department. After downloading a file, they are being redirected to shopping websites they did not intend to navigate to, and built-in webcams turn on. The security team confirms the issue as malicious, and notes modified DNS (Domain Name System) queries that go to nefarious websites hosting malware. What most likely happened to the users' computers? A Remote Access Trojan (RAT) An attacker installs Trojan malware that can execute remote backdoor commands, such as the ability to upload files and install software to a victim PC. What type of Trojan malware is this? Password spraying attack A hacker is trying to gain remote access to a company computer by trying brute force password attacks using a few common passwords in conjunction with multiple usernames. What specific type of password attack is the hacker most likely performing? -A rainbow table -A dictionary word An attacker can exploit a weakness in a password protocol to calculate the hash of a password. Which of the following can the attacker match the hash to, as a means to obtain the password? (Select all that apply.) A rainbow table attack Which of the following attacks do security professionals expose themselves to, if they do not salt passwords with a random value? Clone it. How can an attacker make unauthorized use of acquired user and account details from a user's smart card? Skimming What type of attack is occurring when a counterfeit card reader is in use? Cross-site scripting (XSS) An attacker discovered an input validation vulnerability on a website, crafted a URL with additional HTML code, and emailed the link to a victim. The victim unknowingly defaced (vandalized) the web site after clicking on the malicious URL. No other malicious operations occurred outside of the web application's root directory. This scenario is describing which type of attack? DLL injection An attacker escalated privileges to a local administrator and used code refactoring to evade antivirus detection. The attacker then allowed one process to attach to another and forced the operating system to load a malicious binary package. What did the attacker successfully perform? LDAP injection Using an open connection to a small company's network, an attacker submitted arbitrary queries on port 389 to the domain controllers. The attacker initiated the query from a client computer. What type of injection attack did the attacker perform? A malicious process can alter the execution environment to create a null pointer, and crash the program. How can the lack of logic statement tests on memory location variables be detrimental to software in development? A buffer overflow An attacker gained remote access to a user's computer by exploiting a vulnerability in a piece of software on the device. The attacker sent data that was able to manipulate the memory size that the application reserved to store expected data. Which vulnerability exploit resulted from the attacker's actions? Race condition Developers found a "time of check to time of use" (TOCTTOU) vulnerability in their application. The vulnerability made it possible to change temporary data created within the app before the app uses the data later. This vulnerability is taking advantage of what process in the application? Revealing database server configuration A web application's code prevents the output of any type of information when an error occurs during a request. The development team cited security reasons as to why they developed the application in this way. What sort of security issues did the team have concerns about in this case? Replay attack An intruder monitors an admin's unsecure connection to a server and finds some required data, like a cookie file, that legitimately establishes a session with a web server. Knowing the admin's logon credentials, what type of attack can the intruder perform with the cookie file? Server-side request forgery An attacker submitted a modified uniform resource locator (URL) link to a website that eventually established connections to back-end databases and exposed internal service configurations. The attacker did not hijack a user to perform this attack. This describes which of the following types of attacks? Cross-site Request Forgery (XSRF) An attacker modified the HTML code of a legitimate password-change web form, then hosted the .html file on the attacker's web server. The attacker then emailed a URL link of the hosted file to a real user of the web page. Once the user clicked the link, it changed the user's password to a value the attacker set. Based on this information, what type of attack is the website vulnerable to? -Key discovery -Improper error handling The latest web application, using default settings, is currently accepting application programming interface (API) calls over HyperText Transfer Protocol (HTTP). The environment has a moderate key management system. Even with basic server security, the API connection is vulnerable to which of the following? (Select all that apply.) -Resource exhaustion -Denial of service (DoS) -Amplification Which of the following conditions are results of a SYN (synchronize) flood attack? (Select all that apply.) A shim By compromising a Windows XP application that ran on a Windows 10 machine, an attacker installed persistent malware on a victim computer with local administrator privileges. What should the attacker add to the registry, along with its files added to the system folder, to execute this malware? Refactoring Through what method can malware evade antivirus software detection, so that the software no longer identifies the malware by its signature? -A pass-the-hash attack -A replay attack A security engineer implemented once-only tokens and timestamping sessions. What type of attacks can this type of security prevent? (Select all that apply.) A rogue access point (AP) A security analyst's scans and network logs show that unauthorized devices are connecting to the network. After tracing this down, the analyst discovered a tethered smartphone creating a backdoor to gain access to the network. Which of the following describes this device? Bluesnarfing.CONTINUED....