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2021 Oct comptia a+ 220-801 and 220-802 study guide pdf:
Q441. - (Topic 2)
Which of the following allows a hidden backdoor to be used for access to workstations on the Internet?
A. Firmware
B. Rootkits
C. SQL injection
D. Cross-side scripting
Answer: B
Explanation: http://www.spamlaws.com/how-rootkits-work.html
Q442. - (Topic 5)
A user states that every print job submitted to a local printer prints out random characters. Which of the following steps would MOST likely resolve the problem?
A. Reboot the computer and reset the printer
B. Clear the NVRAM on the printer
C. Reload the printer drivers
D. Replace the printer cable
Answer: C
Q443. - (Topic 5)
A customer states that their wireless stops working a few times a day. They said the problem started when a new neighbor moved in. Which of the following is the MOST likely cause of the issue?
A. Neighbors are using the same encryption.
B. Neighbors are using the same model router.
C. Neighbors have SSID broadcast enabled.
D. Wireless channels are overlapping.
Answer: D
Q444. - (Topic 2)
When setting up a new wireless router, which of the following actions should the technician take FIRST in order to secure the network? (Select TWO).
A. Disable unused ports
B. Change the SSID
C. Position the antennas to prevent outside access
D. Enable MAC filtering
E. Change the default user name
Answer: B,E
Explanation:
The basic tasks to secure a network is to change SSID and the default user name. This is the basic security a user can employ to secure the network immediately.
Q445. - (Topic 5)
A client has a Windows Vista PC that has several unused programs that run on startup. Which of the following utilities can a technician use to disable these programs from running at startup?
A. Default programs
B. Performance information and tools
C. Performance Monitor
D. Device Manager
Answer: B
Improve comptia 220-801 and 220-802:
Q446. - (Topic 5)
Which of the following boot methods would a technician use to BEST install an image from an optical media onto a new computer?
A. PXE
B. Tape
C. DVD
D. USB
Answer: C
Q447. - (Topic 2)
Which of the following can enable a technician to remove a virus that prevents users from updating their antivirus software?
A. Recovery console
B. REGEDIT
C. Safe mode
D. MSCONFIG
Answer: C
Explanation: http://pcsupport.about.com/od/fixtheproblem/f/windows-safe-mode.htm
Q448. - (Topic 5)
When installing Windows XP Professional, which of the following file types will the hard drive be formatted to use by default?
A. FAT32
B. CDFS
C. NTFS
D. FAT
Answer: C
Q449. - (Topic 2)
Which of the following security threats are MOST often delivered via email? (Select TWO).
A. Rootkits
B. Phishing
C. Shoulder surfing
D. Social engineering
E. Spam
Answer: B,E
Explanation: http://www.securelist.com/en/threats/spam
Q450. - (Topic 2)
Which of the following security threats involve shoulder surfing and phone phishing?
A. Man-in-the-Middle
B. Social engineering
C. Trojan virus
D. Spyware
Answer: B
Explanation: http://www.webroot.com/us/en/home/resources/tips/online-shopping-banking/secure-what-is-social-engineering