Notational Systems
Given the numerical value 1010101.11, which of the following number systems is MOST likely represented? A. Decimal B. Octal C. Binary D. Hexadecimal
What is (A) Decimal?
Which of the following lists the basic computing and processing steps in order?
A. Input, retrieval, output, and storage
B. Input/output, processing and storage
C. Input, retrieval, processing, and storage
D. Input, processing, output, and storage
What is (D) Input, processing, output, and storage ?
Which of the following storage units can be used to represent 1024MB?
A. 1GB
B. 1KB
C. 1TB
D. 1PB
What is (A) 1 GB?
A customer has brought a computer in to be repaired. He said he thinks that the sound card has stopped working because no audio is produced when music, video, or DVD's are played.
Which troubleshooting step should you take first?
A. Replace the sound card with a known-good spare.
B. Verify the speakers are plugged into the correct jack and are powered on.
C. Download and install the latest sound card drivers.
D. Verify the volume isn't muted
E. Verify that no IRQ or I/O port address conflicts exist between the card and other devices in the system.
What is (B) Verify the speakers are plugged in the correct jack and are powered on?
A developer is writing a propgram that will store the value of a single character. Which of the following data types will work BEST to store this value?
A. String
B. Single
C. Boolean
D. Char
What is (D) Char?
Which of the following represent the binary number of 2?
A. 10
B. 11
C. 110
D. 101
What is (A) 10?
10 in binary is the same as 2 in decimal
What type of connector is commonly used for keyboards and mice?
A. RCA
B. USB
C. XLR
D. TRS
What is (B) USB?
How many bites are in a single byte?
A. 4
B. 8
C. 12
D. 16
What is (B) 8?
When troubleshooting a malfunctioning notebook computer. Nothing appears on the LED display when the system is powered on.
Which of the following is tbe BEST step to try first?
A. Calibrate the battery
B. Replace the motherboard
C. Plug in the external monitor
D. Replace the video card
What is (C) Plug in an external monitor?
A software developer is creating a variable to hold whole numbers and will perform numeric operations on the values stored in that variable. Which of the following data types is the BEST for this purpose?
A. Integer
B. Float
C. Boolean
D. String
What is (A) Integer?
Which of the following notational systems is MOST Likely used to represent a MAC address?
A. Binary
B. Octal
C. Decimal
D. Hexadecimal
What is (D) Hexadecimal ?
A user has entered a search string into an application and clicked on the search icon. Which of the following is the NEXT step in the computing process?
A. Processing
B. Output
C. Input
D. Storage
What is (A) Processing?
A single 1 or 0 in a digital signal
What is a bit?
You have just connected a new USB device to your Windows system. You used the installation disc that came with the device to install the drivers needed to support the device. After the installation, the system frequently crashes when you try to access the new device. Which of the following steps would most likely resolve the issue?
A. Replace the device itself
B. Remove and then reinstall the device
C. Download and install the latest driver from the manufacture's website.
D. Run the Add Legacy Hardware wizard and manually configure the device
What is (C) Download and install the latest driver from the manufacture's website?
A programmer is creating an application that needs to store a value indicating if the user is logged in or not. Which of the following would be the BEST data type to accomplish this?
A. String
B. Integer
C. Boolean
D. Float
What is (C) Boolean?
A network has an IPV4 address of 192.168.12.155. Which of the following notational systems is used to represent this IP address?
A. Binary
B. Decimal
C. Octal
D. Hexadecimal
What is (B) Decimal - Decimal number systems use ten digits from 0 to 9.
Keyboards, mice, speakers, microphones, and printers are collectively referred to as:
A. Peripherals
B. Equipment
C. Add-ins
D. Attachments
What is (A) Peripherals?
A consumer wants to add a hard drive to their computer to store video from their camera. Which of the following would represent the storage capacity of a modern hard disk drive (HDD) purchased from a computer store?
A. 4 Gigabytes
B. 3 Terabytes
C. 8 Megabytes
D. 1,024 Kilobytes
What is (B) 3 Terabytes ?
You're troubleshooting a computer running Windows 10. The operating system has halted and a blue screen has been displayed on the monitor with an error message. Which of the following is MOST likely first step that should be taken in a troubleshooting the issue?
A. Check the voltage levels on the DC side of the power supply.
B. Remove all memory modules and replce them one a ta time until the error reappears.
C. Update the BIOS.
D. Search for the error in Microsoft's knowledgebase.
E. Uninstall the last application or system update that was installed.
What is (D) Search for the error on Microsoft's knowledgebase?
A developer is creating an application that requires a value to be stored with decimal precision. Which of teh following data types shoul dbe used for the variables that will store these values?
A. Integer
B. Boolean
C. Float
D. String
What is (C) Float?
Which of the following encoding schemes would MOST likely be used to represent an emoji?
A. Binary
B. ASCII
C. Hexadecimal
D. Unicode
What is (D) Unicode?
Unicode - is an international 16-bit encoding standard, and can represent millions of different characters.
Which of the following provides a computer system with the ability to retrieve and manipulate data at a future time? A. Processing B. Output C. Input D. Storage
What is (D) Storage?
Which of the following transfer rates is the FASTEST?
A. 1,282 Kbps
B. 181 Mbps
C. 1,480 Mbps
D. 1.24 Gbps
What is (C) 1,480 Mbps ?
You are troubleshooting a malfunctioning notebook computer. Nothing appears on the LED display when the system is powered on. Which of the following is the BEST step to try first?
A. Calibrate the battery
B. Replace the video card
C. Replace the motherboard
D. Plug in the external monitor
What is (D) Plug in the external monitor?
As a software developer, you need to create a variable to store postal codes. Which data type would you MOST likely use?
A. Boolean
B. String
C. Integer
D. Float
What is (B) String?