(Choose two answers.) a,c 4. A PC NIC and a switch port create one electrical circuit to use when sending data from the PC to the switch. The transmitter uses a simple encoding scheme that uses a higher amplitude to encode 1 and a lower amplitude to encode 0, sending 1 bit in each bit time. The bit rate is 2000 bits per second (2000 bps).
Which of the following answers best describes how a hard disk drive physically writes a binary 0 or 1?C. changing the disk’s surface 12. Which of the following answers are true about an internal hard disk drive (HDD) as it is normally used inside a personal computer (choose 2) B. used for long-term memory, D. connects to the CPU over a bus using a cable
Used for short-term memory b. Used for long-term memory c. Used to process data d. Connects to the CPU over a bus using a cable e. Is installed onto the motherboard 13. Which of the following are components of an internal hard disk drive (HDD)? (Choose two answers.) a. Actuator arm b. Laser c. Platters d. Sliding media tray 14.
A. Actuator arm, C. Platters 14. A. RAM, D. USB flash drive 15. A. Keyboard map 16. D. By closing an electrical circuit connected to the key is pressed 17.
Is installed onto the motherboard. 5. (A) – The CPU tells the RAM which address holds the data that the CPU wants to read. 6. (C) – Character set.
Applying The Law of Conservation of Mass to the Copper Cycle Clara Ramirez* Lab Partner: Manniah Harris Chemistry Lab 111 Section 529 Introduction: Copper is an abundant element found in nature as well as in a variety of different compounds. It is an excellent conductor of heat and electricity, hence it can be found in various industries. The purpose of the experiment was to demonstrate the copper cycle, in which copper metal would be transformed through a series of reactions and then recovered as solid copper. A percent yield for copper recovered was also calculated. The Law of Conservation of Mass will also be expressed during the experiment, as it states mass is neither gained nor lost in a chemical change.
Aim To compare the reactivity of various metals by observing their reaction with hydrochloric acid Hypothesis That the all the metals will produce foam and a pop. Variables Independent – Magnesium, Aluminium, Zinc, Copper Dependent – Detergent, Hydrochloric Acid Controlled – Size of the metals, amount of detergent and hydrochloric acid Materials 2 M hydrochloric acid Detergent 10 x test tubes and test tube rack and 5 rubber stoppers 0.5 cm pieces of magnesium, aluminium, zinc and copper 2 cm pieces of magnesium, aluminium, zinc and copper Steel wool Ruler Timer Bench mat Matches and birthday candle Marking pen Safety Remember to wear safety glasses and protective gloves when you do this experiment. 2 M HCl is corrosive. Wash with plenty of water should you get any on your skin or in your eyes. Method Part 1 1 Clean the surface of the 0.5cm piece of magnesium with a piece of steel wool 2 Place the magnesium into a test tube 3 Add three drops of detergent to the test tube 4 Add 2 cm of hydrochloric acid to the test tube.
From the Start button on your desktop, launch VMWare Player as shown below. b. Click the “Open a Virtual Machine” link. c. Browse to the folder where you copied the ITT-Lab virtual machine on your USB harddrive and double-cllick on ITT-Lab.vmx to select it as the virtual machine to open. 3. Once the ITT-Lab virtual machine is ready on the left column, highlight the “ITT-Lab” icon and pull down the “Virtual Machine Settings” menu by clicking the down arrow by Virtual Machine on the top menu bar.
d. The amplitude is 1 volt. 3. A PC NIC and a switch port create one electrical circuit to use when sending data from the PC to the switch. Which of the following tasks is a function done by the transmitter? (Choose two answers.)
– Used for: • Digital cameras • Video cameras – 1394a—FireWire 400 • 400Mbps – 1394b—FireWire 800 • 800Mbps Like USB, devices are hot swappable. 17 Other Common Ports PS/2: – Used for legacy motherboard connections to keyboard/mouse. Centronics printer ports: – 36-pin cable. Audio mini-jack: – 1/8-inch size. – PC99 color coding • Pink – Microphone.