The CompTIA 220-901 exam is one of two exams requires to obtain the CompTIA A+ (900 series). This exam will cover topics like networking, mobile devices and hardware and network troubleshooting.
Answer Description
An Uninterruptible Power Supply (UPS) is a backup power supply that can be used in the event of a power outage. Typically a UPS only has 10-15 minutes of power and is intended to allow systems to continue functioning briefly or be powered off safely as opposed to being a long term backup resource.
Hardware
This question is filed under objective 1, Hardware
Wikipedia
Answer Description
On Windows based systems the Event Viewer will display a detailed log of events such as application crashes, power losses and other debugging information for the operating system, third party applications and hardware.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
Wikipedia
- A) 15 for power and 7 for data
- B) 8 for data and 12 for power
- C) 40 for data and 4 for power
- D) 15 for both power and data
Answer Description
SATA (Serial Advanced Technology Attachment) has two main connector types. The power connector is larger with 15 pins, while the data connector is 7 pins. Both are an L shape to avoid inserting a connector incorrectly.
Hardware
This question is filed under objective 1, Hardware
Wikipedia
Answer Description
Microwave ovens operate on the 2.4 Ghz frequency, same as most WiFi networks. The intermittent outages are likely being caused by people using the microwave oven in the break room.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
Wikipedia
Answer Description
ifconfig (Interface Configuration) is a command line tool on Unix-like systems to display network configuration details. The Windows equivalent is IPCONFIG. Unix-like systems typically refers to Unix, Linux, BSD and OSX operating systems.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
Wikipedia
- A) Slower memory in blue, faster in black.
- B) NVRAM in blue, RAM in black
- C) Put equal size/speed of RAM in the slots, so that each slot matches its paired slot color.
- D) Primary ram in blue, backup ram in black.
Answer Description
The exact answer depends on the manufacturer, but regardless the best answer is to put equal size/speed of RAM in each. This is especially important for the speed of the RAM as the lowest speed will be used for all memory slots - even if one has a faster speed available. It is also very common for the motherboard to only support matching sizes (e.g. all 4 GB, all 2 GB, etc.).
Hardware
This question is filed under objective 1, Hardware
Answer Description
A Wide-Area-Network (WAN) is a series of smaller networks that are linked together to form a single, large network. Metropolitan Area Networks (MAN) are very similar to WANs, but are geographically smaller and typically used by city governments and universities.
Networking
This question is filed under objective 2, Networking
Wikipedia
Answer Description
Laptop designs often make it difficult to upgrade or change components like video cards, processors and motherboards. RAM and Hard drives are typically easily accessible and cost effective to upgrade in a laptop.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
Wikipedia
Answer Description
Near Field Communication (NFC) is the standard wireless protocol behind wireless payment options such as Android Pay and Apple Pay.
Mobile Devices
This question is filed under objective 3, Mobile Devices
Wikipedia
- A) Pop the keyboard off
- B) Unhinge the LCD Screen
- C) Unplug the laptop from the power souce
- D) Remove battery
Answer Description
All power sources should be disconnected from the laptop before accessing any internal components. This includes the power supply or charging cable as well as the device's battery.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
- A) Toggle the phone's GPS off
- B) Disable mobile data
- C) Disable the WiFi antenna
- D) Place the phone in ad-hoc mode
Answer Description
The best option is to instruct the user how to disable mobile data for the duration of the trip. While this is disabled they cannot access the internet using their cellular connection but could still use WiFi, Bluetooth, etc. This is supported by all major smart phone operating systems. Mobile data may also be referred to as cellular data.
Mobile Devices
This question is filed under objective 3, Mobile Devices
Wikipedia
Answer Description
Servers should always be given a static IP Address to ensure it can be quickly resolved and any applications using the IP address do not need to be reconfigured.
Networking
This question is filed under objective 2, Networking
Wikipedia
Answer Description
A USB Drive is the only device or component that can be used as a boot device. DDR2 is a type of Random Access Memory (RAM). HDMI (High-Definition Multimedia Interface) is audio/video interface. FDISK is a command on some operating systems that provides disk partitioning functions - but it is not a storage device as requested by the question.
Hardware
This question is filed under objective 1, Hardware
Wikipedia
Answer Description
VGA uses a 15 pin DE connector
Hardware
This question is filed under objective 1, Hardware
Wikipedia
Answer Description
Power over Ethernet (PoE) allows a device to use an ethernet cable as a power source and it's data/network connection. Using PoE the wireless access points will not need separate power and data connections.
Networking
This question is filed under objective 2, Networking
Wikipedia
Answer Description
Power-line communication will allow a SOHO network to be built using ethernet power adapters which is much cheaper than running cable. Power-line communication allows the use of the ethernet protocol over electrical power wiring. If the company doesn't want employees working from home to use wireless networks or to pay the expense of running ethernet from the modem to the office then power-line is a cheap alternative.
Networking
This question is filed under objective 2, Networking
Wikipedia
Answer Description
PCIe, or PCI-Express, comes in x1, x4, x8, x16, x32 speeds. The size of the expansion slot also varies depending on type used. While PCIe x32 is defined in the official standard, x16 is generally the largest you will find on the market.
Hardware
This question is filed under objective 1, Hardware
Wikipedia
- A) Cross talk
- B) Hubs can only broadcast packets
- C) Hubs conduct deep packet inspections by default
- D) None of the above
Answer Description
Hubs are not intelligent enough to route packets to their destination. Instead they broadcast any data they receive out of every port (except the port they receive it on). Hubs cause large amounts of unnecessary packets that will clog a network.
Hardware and Network Troubleshooting
This question is filed under objective 4, Hardware and Network Troubleshooting
Wikipedia
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