Cybersecurity Concepts and Techniques, Exams of Computer Science

Download Cybersecurity Concepts and Techniques and more Exams Computer Science in PDF only on Docsity! Sec+ 401 Certified for High Academic Standards Guaranteed to Improve Your Academic Performance With Detailed Answer Rationale Diverse Questions with Correct Solutions A company determines a need for additional protection from rogue devices plugging into physical ports around the building. Which of the following provides the highest degree of protection from unauthorized wired network access? A. Intrusion Prevention Systems B. MAC filtering C. Flood guards D. 802.1x - -correct ans- -D A company is preparing to decommission an offline, non-networked root certificate server. Before sending the server's drives to be destroyed by a contracted company, the Chief Security Officer (CSO) wants to be certain that the data will not be accessed. Which of the following, if implemented, would BEST reassure the CSO? (Select TWO). A. Disk hashing procedures B. Full disk encryption C. Data retention policies D. Disk wiping procedures E. Removable media encryption - -correct ans- -B,D During the analysis of a PCAP file, a security analyst noticed several communications with a remote server on port 53. Which of the following protocol types is observed in this traffic? A. FTP B. DNS C. Email D. NetBIOS - -correct ans- -B A compromised workstation utilized in a Distributed Denial of Service (DDOS) attack has been removed from the network and an image of the hard drive has been created. However, the system administrator stated that the system was left unattended for several hours before the image was created. In the event of a court case, which of the following is likely to be an issue with this incident? A. Eye Witness B. Data Analysis of the hard drive C. Chain of custody D. Expert Witness - -correct ans- -C During which of the following phases of the Incident Response process should a security administrator define and implement general defense against malware? A. Lessons Learned B. Preparation C. Eradication D. Identification - -correct ans- -B A. Typo squatting B. Session hijacking C. Cross-site scripting D. Spear phishing - -correct ans- -A A company has proprietary mission critical devices connected to their network which are configured remotely by both employees and approved customers. The administrator wants to monitor device security without changing their baseline configuration. Which of the following should be implemented to secure the devices without risking availability? A. Host-based firewall B. IDS C. IPS D. Honeypot - -correct ans- -B An administrator has a network subnet dedicated to a group of users. Due to concerns regarding data and network security, the administrator desires to provide network access for this group only. Which of the following would BEST address this desire? A. Install a proxy server between the users' computers and the switch to filter inbound network traffic. B. Block commonly used ports and forward them to higher and unused port numbers. C. Configure the switch to allow only traffic from computers based upon their physical address. D. Install host-based intrusion detection software to monitor incoming DHCP Discover requests - -correct ans- -C Which of the following is a security concern regarding users bringing personally-owned devices that they connect to the corporate network? A. Cross-platform compatibility issues between personal devices and server-based applications B. Lack of controls in place to ensure that the devices have the latest system patches and signature files C. Non-corporate devices are more difficult to locate when a user is terminated D. Non-purchased or leased equipment may cause failure during the audits of company- owned assets - -correct ans- -B 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. - -correct ans- -B A security administrator has concerns regarding employees saving data on company provided mobile devices. Which of the following would BEST address the administrator's concerns? A. Install a mobile application that tracks read and write functions on the device. B. Create a company policy prohibiting the use of mobile devices for personal use. C. Enable GPS functionality to track the location of the mobile devices. D. Configure the devices so that removable media use is disabled. - -correct ans- -D Identifying residual risk is MOST important to which of the following concepts? A. Risk deterrence B. Risk acceptance C. Risk mitigation D. Risk avoidance - -correct ans- -B The information security technician wants to ensure security controls are deployed and functioning as intended to be able to maintain an appropriate security posture. Which of the following security techniques is MOST appropriate to do this? A. Log audits B. System hardening C. Use IPS/IDS D. Continuous security monitoring - -correct ans- -D A small company can only afford to buy an all-in-one wireless router/switch. The company has 3 wireless BYOD users and 2 web servers without wireless access. Which of the following should the company configure to protect the servers from the user devices? (Select TWO). A. Deny incoming connections to the outside router interface. The security administrator is currently unaware of an incident that occurred a week ago. Which of the following will ensure the administrator is notified in a timely manner in the future? A. User permissions reviews B. Incident response team C. Change management D. Routine auditing - -correct ans- -D An access point has been configured for AES encryption but a client is unable to connect to it. Which of the following should be configured on the client to fix this issue? A. WEP B. CCMP C. TKIP D. RC4 - -correct ans- -B The system administrator is tasked with changing the administrator password across all 2000 computers in the organization. Which of the following should the system administrator implement to accomplish this task? A. A security group B. A group policy C. Key escrow D. Certificate revocation - -correct ans- -B A network administrator wants to block both DNS requests and zone transfers coming from outside IP addresses. The company uses a firewall which implements an implicit allow and is currently configured with the following ACL applied to its external interfacE. PERMIT TCP ANY ANY 80 PERMIT TCP ANY ANY 443 Which of the following rules would accomplish this task? (Select TWO). A. Change the firewall default settings so that it implements an implicit deny B. Apply the current ACL to all interfaces of the firewall C. Remove the current ACL D. Add the following ACL at the top of the current ACL DENY TCP ANY ANY 53 E. Add the following ACL at the bottom of the current ACL DENY ICMP ANY ANY 53 F. Add the following ACL at the bottom of the current ACL DENY IP ANY ANY 53 - -correct ans- -A,F Which of the following attacks would cause all mobile devices to lose their association with corporate access points while the attack is underway? A. Wireless jamming B. Evil twin C. Rogue AP D. Packet sniffing - -correct ans- -A An administrator wants to ensure that the reclaimed space of a hard drive has been sanitized while the computer is in use. Which of the following can be implemented? A. Cluster tip wiping B. Individual file encryption C. Full disk encryption D. Storage retention - -correct ans- -A company is looking to improve their security posture by addressing risks uncovered by a recent penetration test. Which of the following risks is MOST likely to affect the business on a day- to-day basis? A. Insufficient encryption methods B. Large scale natural disasters C. Corporate espionage D. Lack of antivirus software - -correct ans- -D Ann, an employee, is cleaning out her desk and disposes of paperwork containing confidential customer information in a recycle bin without shredding it first. This is MOST likely to increase the risk of loss from which of the following attacks? A. Shoulder surfing B. Dumpster diving C. Tailgating D. Spoofing - -correct ans- -B A recently installed application update caused a vital application to crash during the middle of the D. False negative - -correct ans- -B Company A submitted a bid on a contract to do work for Company B via email. Company B was insistent that the bid did not come from Company A. Which of the following would have assured that the bid was submitted by Company A? A. Steganography B. Hashing C. Encryption D. Digital Signatures - -correct ans- -D Ann, a sales manager, successfully connected her company-issued smartphone to the wireless network in her office without supplying a username/password combination. Upon disconnecting from the wireless network, she attempted to connect her personal tablet computer to the same wireless network and could not connect. Which of the following is MOST likely the reason? A. The company wireless is using a MAC filter. B. The company wireless has SSID broadcast disabled. C. The company wireless is using WEP. D. The company wireless is using WPA2. - -correct ans- -A A network technician is on the phone with the system administration team. Power to the server room was lost and servers need to be restarted. The DNS services must be the first to be restarted. Several machines are powered off. Assuming each server only provides one service, which of the following should be powered on FIRST to establish DNS services? A. Bind server B. Apache server C. Exchange server D. RADIUS server - -correct ans- -A A security administrator is reviewing the company's continuity plan. The plan specifies an RTO of six hours and RPO of two days. Which of the following is the plan describing? A. Systems should be restored within six hours and no later than two days after the incident. B. Systems should be restored within two days and should remain operational for at least six hours. C. Systems should be restored within six hours with a minimum of two days worth of data. D. Systems should be restored within two days with a minimum of six hours worth of data - -correct ans- -C The incident response team has received the following email messagE. From: [email protected] To: [email protected] Subject: Copyright infringement A copyright infringement alert was triggered by IP address 13.10.66.5 at 09: 50: 01 GMT. After reviewing the following web logs for IP 13.10.66.5, the team is unable to correlate and identify the incident. 09: 45: 33 13.10.66.5 http: //remote.site.com/login.asp?user=john 09: 50: 22 13.10.66.5 http: //remote.site.com/logout.asp?user=anne 10: 50: 01 13.10.66.5 http: //remote.site.com/access.asp?file=movie.mov 11: 02: 45 13.10.65.5 http: //remote.site.com/download.asp?movie.mov=ok Which of the following is the MOST likely reason why the incident response team is unable to identify and correlate the incident? A. The logs are corrupt and no longer forensically sound. B. Traffic logs for the incident are unavailable. C. Chain of custody was not properly maintained. D. I - -correct ans- -D A server dedicated to the storage and processing of sensitive information was compromised with a rootkit and sensitive data was exfiltrated. Which of the following incident response procedures is best suited to restore the server? A. Wipe the storage, reinstall the OS from original media and restore the data from the last known good backup. B. Keep the data partition, restore the OS from the most current backup and run a full system antivirus scan. C. Format the storage and reinstall both the OS and the data from the most current backup. D. Erase the storage, reinstall the OS from most current backup and only restore the data that was not compromised - -correct ans- -A An organization has introduced token-based authentication to system administrators due to risk of password compromise. The tokens have a set of numbers that automatically change every 30 seconds. Which of the following type of authentication mechanism is this? A. TOTP B. Smart card C. CHAP D. HOTP - -correct ans- -A A security technician at a small business is worried about the Layer 2 switches in the network suffering from a DoS style attack caused by staff incorrectly cabling network connections between switches. Which of the following will BEST mitigate the risk if implemented on the switches? A. Spanning tree B. Flood guards C. Access control lists D. Syn flood - -correct ans- -A An administrator wants to establish a WiFi network using a high gain directional antenna with a narrow radiation pattern to connect two buildings separated by a very long distance. Which of the following antennas would be BEST for this situation? A. Dipole B. Yagi C. Sector D. Omni - -correct ans- -B An attacker used an undocumented and unknown application exploit to gain access to a file server. Which of the following BEST describes this type of attack? A. Integer overflow B. Cross-site scripting C. Zero-day D. Session hijacking E. XML injection - -correct ans- -C Which of the following is an XML based open standard used in the exchange of authentication and authorization information between different parties? A. LDAP B. SAML C. TACACS+ D. Kerberos - -correct ans- -B Which of the following ports and protocol types must be opened on a host with a host- based firewall to allow incoming SFTP connections? A. 21/UDP B. 21/TCP C. 22/UDP D. 22/TCP - -correct ans- -D A user, Ann, is reporting to the company IT support group that her workstation screen is blank other than a window with a message requesting payment or else her hard drive will be formatted. Which of the following types of malware is on Ann's workstation? A. Trojan B. Spyware C. Adware D. Ransomware - -correct ans- -D Which of the following controls can be implemented together to prevent data loss in the event of theft of a mobile device storing sensitive information? (Select TWO). A. Full device encryption B. Screen locks C. GPS D. Asset tracking E. Inventory control - -correct ans- -A,B A way to assure data at-rest is secure even in the event of loss or theft is to use: A. Full device encryption. B. Special permissions on the file system. C. Trusted Platform Module integration. D. Access Control Lists. - -correct ans- -A A security audit identifies a number of large email messages being sent by a specific user from A. Mitigation B. Identification C. Preparation D. Lessons learned - -correct ans- -D A security technician has been asked to recommend an authentication mechanism that will allow users to authenticate using a password that will only be valid for a predefined time interval. Which of the following should the security technician recommend? A. CHAP B. TOTP C. HOTP D. PAP - -correct ans- -B A security administrator must implement a wireless encryption system to secure mobile devices' communication. Some users have mobile devices which only support 56-bit encryption. Which of the following wireless encryption methods should be implemented? A. RC4 B. AES C. MD5 D. TKIP - -correct ans- -A After a security incident involving a physical asset, which of the following should be done at the beginning? A. Record every person who was in possession of assets, continuing post-incident. B. Create working images of data in the following order: hard drive then RAM. C. Back up storage devices so work can be performed on the devices immediately. D. Write a report detailing the incident and mitigation suggestions. - -correct ans- -A