COMPUTER SCIENCE

What are three disadvantages of coaxial cable compared to other cable types? - It is expensive, not very flexible (hard to bend around corners), and using multiple splitters can degrade signal quality. What is the resistance rating of RG-59 coaxial cable? - RG-59 has a resistance rating of 75 ohms. It is used in CCTV video systems and for short cable TV runs under 3 meters. What is the resistance rating of RG-6 coaxial cable? - RG-6 also has a 75 ohm rating. It is used for cable TV, ...

Why are fins included in heat sink design? - Fins increase the surface area, allowing more air contact for faster heat dissipation. What distinguishes an active heat sink from a passive one? - Active heat sinks have a fan for faster cooling, while passive heat sinks rely solely on airflow and surface area. Which components typically use active heat sinks? - CPUs, high-end video cards, and some motherboard chipsets with integrated graphics use active heat sinks. Which components typic...

Should you use force to insert the CPU? - No, applying pressure can bend or break pins and render the CPU useless. How do you secure the CPU after placing it in the socket? - Relatch the socket cover; with a ZIF socket, use the lever to lock it into place. Why might you need thermal paste during CPU installation? - Thermal paste fills imperfections between the CPU and cooler, enhancing heat transfer. What should you do if thermal paste is needed? - Apply a thin, even layer on the CPU...

What does the Windows Performance Monitor do? - The Performance Monitor displays detailed data about hardware resources like CPU, memory, disk, and network, helping identify performance issues. What is clock time (CT)? - Clock time is the period of the clock signal that synchronizes processor circuits. What factors affect clock time? - Circuit technology and the complexity of operations performed in a single clock cycle affect clock time. Was clock speed always a reliable performan...

What is metered utilization in cloud computing? - Metered utilization refers to on-demand computing (ODC), where resources are paid for based on use. Clients receive services as needed and only when needed. What is rapid elasticity in cloud computing? - Rapid elasticity is the ability to scale services automatically and quickly. Users can request more storage or resources instantly as their needs grow. What is high availability in cloud computing? - High availability ensures that res...

What is Drop-on-Demand (DOD) technology in inkjet printers? - DOD is a common inkjet technology. It includes thermal bubble and piezo electric methods. How does thermal bubble technology work in inkjet printers? - Thermal bubble technology uses heat to create a vapor bubble. The bubble expands to push an ink droplet out. How does piezo electric technology function in inkjet printers? - Piezo electric technology uses an electrical signal to vibrate a film. This vibration forces an ink d...

What is an LGA socket? - Land Grid Array (LGA) sockets move the connecting pins to the socket, while the CPU has flat conductive pads. How does an LGA socket connect the processor? - The conductive pads on the processor's bottom contact the protruding pins inside the motherboard socket. What is a PGA socket? - Pin Grid Array (PGA) sockets use processors that have a grid of pins on the bottom, which insert into socket holes. Where are the pins located in a PGA setup? - The pins are...

Is a low-level format typically performed by users? - No, a low-level format requires special tools and is not recommended after the manufacturer has performed it. Performing it improperly can damage the drive. What does a low-level format physically do to a hard drive? - It writes new sectors and tracks onto the surface of the drive. It also erases all existing data by overwriting it with zeroes. Why is physical destruction of a hard drive used? - Physical destruction ensures that no ...

What is the function of the braided mesh conductor in coaxial cable? - It serves as a second physical channel and functions as the ground. It is typically made of aluminum or tin-coated copper. What material is used for the sheath in coaxial cable and what is its purpose? - The sheath is made of PVC plastic. It encases and protects the entire cable from external elements. What are three advantages of coaxial cable over other cable types? - It is less susceptible to electromagnetic in...

What instruction set do 32-bit processors use? - 32-bit processors use the IA-32 instruction set, also known as x86. What instruction set do Intel Itanium processors use? - Itanium processors use the IA-64 instruction set. What instruction set do AMD64 and Intel 64 processors use? - They use the x86-64 instruction set, also referred to as x64. Can 32-bit applications run on 64-bit processors? - Yes, 32-bit apps can run using specific methods depending on the processor architecture....