Practice Free 220-1101 Exam Online Questions
In which of the following places is a laptop’s wireless antenna MOST likely located?
- A . Near the network interface card
- B . Underneath the battery
- C . Integrated into the motherboard
- D . In the bezel of the lid
D
Explanation:
According to Dell Community, the Wi-Fi antenna is located in the top of the LCD display housing. It consists of two elements, fed by two cables, a white main designated on the Wi-Fi card by a white triangle, and a black auxiliary designated on the Wi-Fi card by a black triangle1.
In which of the following places is a laptop’s wireless antenna MOST likely located?
- A . Near the network interface card
- B . Underneath the battery
- C . Integrated into the motherboard
- D . In the bezel of the lid
D
Explanation:
According to Dell Community, the Wi-Fi antenna is located in the top of the LCD display housing. It consists of two elements, fed by two cables, a white main designated on the Wi-Fi card by a white triangle, and a black auxiliary designated on the Wi-Fi card by a black triangle1.
A user’s desktop computer slows down after a few minutes of use, and the fans alternate between silent and very loud.
Which of the following is MOST likely failing, therefore causing these symptoms?
- A . CPU fan
- B . Memory
- C . Power supply
- D . Hard drive
A
Explanation:
A CPU fan is a component that cools down the CPU, which is the main processor of the computer. If the CPU fan is failing, it can cause the computer to slow down and the fans to alternate between silent and very loud12. This is because the CPU fan cannot maintain a consistent speed and airflow to keep the CPU at a safe temperature. When the CPU gets too hot, it throttles its performance to avoid overheating, which results in a slower computer. The other fans in the computer also try to compensate for the lack of cooling from the CPU fan by spinning faster and louder2.
A small office has a wireless network with several access points for roaming laptop use. Users occasionally report that the wireless connection drops or becomes very slow. Users have confirmed that this issue only happens when connected to the office wireless network.
Which of the following would MOST likely be the cause?
- A . Hidden SSID
- B . Device interference
- C . Ethernet port flapping
- D . High ISP latency
B
Explanation:
Device interference is the most likely cause of the wireless connection dropping or becoming slow. Interference can come from other wireless devices, microwave ovens, or physical barriers like walls and metal objects. Hidden SSID, Ethernet port flapping, and high ISP latency are not likely to cause this issue.
Wireless interference from other devices can cause a drop in wireless connection speed and stability. In a small office environment, there may be several wireless devices competing for the same bandwidth, causing the issues described. References: CompTIA A+ Certification Exam Core 1 Exam Objectives – 3.7 Given a scenario, troubleshoot wired and wireless networks with appropriate tools
Which of the following 802.11 Wi-Fi protocols utilizes the 5.0GHz frequency and has the BEST speed and reception?
- A . 802.11a
- B . 802.11 ax
- C . 802.11b/g/n
- D . 802.11n
B
Explanation:
A technician is attempting to connect the wired LANs at two nearby buildings by installing a wireless point-to-point connection.
Which of the following should the technician consider?
- A . NFC protocol data rate
- B . RFID frequency range
- C . Bluetooth version compatibility
- D . Allowable limits for transmit power
D
Explanation:
When installing a wireless point-to-point connection between two buildings, the technician should consider the allowable limits for transmit power, which vary depending on the country or region. Exceeding these limits could interfere with other wireless devices or violate regulations. NFC protocol data rate, RFID frequency range, and Bluetooth version compatibility are not relevant for a wireless point-to-point connection.
A technician is attempting to connect the wired LANs at two nearby buildings by installing a wireless point-to-point connection.
Which of the following should the technician consider?
- A . NFC protocol data rate
- B . RFID frequency range
- C . Bluetooth version compatibility
- D . Allowable limits for transmit power
D
Explanation:
When installing a wireless point-to-point connection between two buildings, the technician should consider the allowable limits for transmit power, which vary depending on the country or region. Exceeding these limits could interfere with other wireless devices or violate regulations. NFC protocol data rate, RFID frequency range, and Bluetooth version compatibility are not relevant for a wireless point-to-point connection.
A user is unable to use a drawing stylus on a smartphone. The smartphone did not originally come with a stylus.
Which of the following is the most likely cause of this issue?
- A . The phone needs to be updated to the latest OS.
- B . The drawing stylus only works with a special digitizer.
- C . The stylus must be re-paired to this new device.
- D . The phone’s screen only supports resistive styluses.
B
Explanation:
A digitizer is a device that converts analog signals, such as touch or pressure, into digital signals that can be processed by a computer. A digitizer is usually embedded in the screen of a smartphone or tablet, and it works with a compatible stylus to enable drawing and writing on the screen1.
There are different types of digitizers and styluses, such as capacitive, resistive, active, and passive. Capacitive digitizers and styluses work by detecting changes in the electric field on the screen when the stylus touches it. Resistive digitizers and styluses work by detecting changes in the resistance on the screen when the stylus presses it. Active digitizers and styluses work by using an electromagnetic field to communicate between the stylus and the screen. Passive digitizers and styluses work by using a special material on the tip of the stylus that mimics the human finger2.
Not all digitizers and styluses are compatible with each other. For example, an active stylus will not work with a capacitive or resistive digitizer, and vice versa. A passive stylus will work with any digitizer, but it will not have any advanced features, such as pressure sensitivity or tilt control2.
Following a scheduled power outage, users report they cannot access the local intranet. A technician is able to ping the IP address of the server that is hosting the website .
Which of the following serves is MOST likely offline?
- A . Web
- B . DNS
- C . File
- D . DHCP
B
Explanation:
DNS stands for Domain Name System and is a service that translates domain names (such as www.example.com) into IP addresses (such as 192.168. 1. 100) that computers can use to communicate over a network. If the DNS server is offline, users may not be able to access websites or other network resources by using their domain names, even if they are online and reachable by their IP addresses. The technician should check if the DNS server is running and configured correctly, or use an alternative DNS server if possible .
Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 81)
The Wi-Fi network in the office is experiencing slow connection speeds.
Which of the following should the technician check first on the access point?
- A . Transmit power settings
- B . Security settings
- C . Firmware version
- D . Location
A
Explanation:
The transmit power settings of the access point determine how strong the Wi-Fi signal is. If the transmit power is too low, the Wi-Fi network will have slow connection speeds and poor coverage. If the transmit power is too high, the Wi-Fi network will interfere with other nearby networks and devices, causing congestion and performance issues. Therefore, the technician should check the transmit power settings first and adjust them to an optimal level for the office environment.
Reference: • 8 Reasons Why Your Internet is Slow (and How to Fix It), section “You have weak Wi-Fi signals”.
• 6 Things Slowing Down Your Wi-Fi (And What to Do About Them) – How-To Geek, section “Channel Congestion Dings Wi-Fi Performance”.