RG: Ch 3: Hardware Flashcards
Which RAM type is not compatible with any earlier type of random-access memory?
A. DDR5
B. DDR4
C. DDR3
D. DDR2
B. DDR4
DDR4 SDRAM is an abbreviation for double data rate fourth-generation synchronous dynamic random-access memory. DDR4 is not compatible with any earlier type of random-access memory (RAM). The DDR4 standard allows for DIMMs of up to 64 GB in capacity, compared to DDR3’s maximum of 16 GB per DIMM. DDR3 and DDR2 are backward compatible, and there is no DDR5.
The SATA power connector has how many pins?
A. 8
B. 12
C. 15
D. 18
C. 15
The SATA power connector consists of 15 pins, with 3 pins designated for 3.3V, 5V, and 12V and with each pin carrying 1.5 amps. This results in a total draw of 4.95 watts + 7.5 watts + 18 watts, or about 30 watts.
Which RAM type is used in laptops?
A. DIMM
B. SODIMM
C. Rambus
D. BNC
B. SODIMM
Portable computers (notebooks and subnotebooks) require smaller sticks of RAM because of their smaller size. One of the two types is small outline DIMM (SODIMM), which can have 72, 144, or 200 pins. DIMM is a full-size RAM type. Rambus is a type of RAM but not used in laptops, and BNC is a connector for coaxial cabling.
The amount of RAM that is required in a virtualization workstation depends on which of the following?
A. Number of processors
B. Number of drives
C. Number of VMs
D. Speed of NIC
C. Number of VMs
The amount of RAM that is required depends on the number of VMs that you anticipate operating at the same time, not how many exist on the desktop. Total the memory requirements of each VM that will be open at the same time, in addition to the requirements of the host operating system. That should be the minimum. Then add more for overhead to ensure performance.
When using the AT power connector, the power cable coming from the power supply will have two separate connectors, labeled what?
A. P8 and P9
B. P1 and P2
C. P9 and P10
D. P2 and P3
A. P8 and P9
When using the AT power connector, the power cable coming from the power supply will have two separate connectors, labeled P8 and P9. When you are attaching the two parts to the motherboard, the black wires on one should be next to the black wires on the other for proper function.
Which connectors are sometimes used in the place of RCA connectors for video electronics?
A. RJ-11
B. RJ-45
C. RS-232
D. BNC
D. BNC
Bayonet Neill–Concelman (BNC) connectors are sometimes used in the place of RCA connectors for video electronics, so you may encounter these connectors, especially when video equipment connects to a PC. In many cases, you may be required to purchase an adapter to convert this to another form of connection because it is rare to find one on the PC. An RJ-11is a standard connector for a telephone line and is used to connect a computer modem to a phone line. It looks much like an RJ-45 but is noticeably smaller. The RJ45 is used for networking. RS-232 is a serial connector.
Which of the following is a rewritable optical disc?
A. CD
B. CD-RW
C. DVD
D. CD-ROM
B. CD-RW
Compact Disc-ReWritable (CD-RW) media is a rewritable optical disc. A CD-RW drive requires more sensitive laser optics. It can write data to the disc but also has the ability to erase that data and write more data to the disc. CD, DVD, and CD-ROM are all read-only.
Which cable type transmits data at speeds up to 100 Mbps and was used with Fast Ethernet (operating at 100 Mbps) with a transmission range of 100 meters?
A. Cat 4
B. Cat 5
C. Cat 5e
D. Cat 6
B. Cat 5
Cat 5 transmits data at speeds up to 100 Mbps and was used with Fast Ethernet (operating at 100 Mbps) with a transmission range of 100 meters. It contains four twisted pairs of copper wire to give the most protection. Although it had its share of popularity (it’s used primarily for 10/100 Ethernet networking), it is now an outdated standard. Newer implementations use the 5e standard. Cat 4 transmits at 16 Mbps, and Cat 6 transmits at 1 Gbps.
What printer component turns the printed sheet over so it can be run back through the printer and allow printing on both sides?
A. Driver
B. Duplexer
C. Orientation
D. Collator
B. Duplexer
An optional component that can be added to printers (usually laser but also inkjet) is a duplexer. This can be an optional assembly added to the printer, or built into it, but the sole purpose of duplexing is to turn the printed sheet over so it can be run back through the printer and allow printing on both sides.
Which of the following is a description of light output?
A. KVM
B. Lumens
C. Contrast
D. CHS
B. Lumens
When discussing bulbs for projectors, brightness is a description of light output, which is measured in lumens (not watts). Ensure that you are purchasing the correct bulb for the projector and maximize the life of the bulb by turning the projector off when not in use. A keyboard, video, and mouse (KVM) device allows you to plug multiple PCs (usually servers) into the device and to switch easily back and forth from system to system using the same mouse, monitor, and keyboard. Contrast is the relationship between dark and light. CHS is a drive geometry concept.
Which of the following is a standard managed by the ISO and uses tags that are embedded in the devices?
A. KVM
B. Lumens
C. NFC
D. CHS
C. NFC
NFC components include an initiator and a target; the initiator actively generates an RF field that can power a passive target. This enables NFC targets to take simple form factors such as tags, stickers, key fobs, or cards that do not require batteries. When discussing bulbs for projectors, brightness is a description of light output, which is measured in lumens (not watts). Ensure that you are purchasing the correct bulb for the projector and maximize the life of the bulb by turning the projector off when not in use. A keyboard, video, and mouse (KVM) device allows you to plug multiple PCs (usually servers) into the device and to switch easily back and forth from system to system using the same mouse, monitor, and keyboard. CHS is a drive geometry concept.
Which connector is used for telephone cord?
A. RJ-11
B. RJ-45
C. RS-232
D. BNC
A. RJ-11
An RJ-11 is a standard connector for a telephone line and is used to connect a computer modem to a phone line. It looks much like an RJ-45 but is noticeably smaller. The RJ-45 is used for networking. RS 232 is a serial connector. BNC is a coaxial connector.
At what speed will latency on a magnetic drive decrease to about 3 ms?
A. 5400 rpm
B. 7200 rpm
C. 10,000 rpm
D. 15,000 rpm
C. 10,000 rpm
At 10,000 rpm, the latency will decrease to about 3 ms. Data transfer rates also generally go up with a higher rotational speed but are influenced by the density of the disk (the number of tracks and sectors present in a given area). Latency at 5400 rpm will be 5.56 ms. At 7200 it will be 4.17, and at 15000 it will drop to 2.
Which of the following needs the most resources?
A. Thin client
B. Thick client
C. Medium client
D. Stationary client
B. Thick client
A thick client is a standard PC. When discussing thin and thick clients, you should understand that a thick client is a PC that has all the capabilities of a standard PC. It runs all applications locally from its own hard drive. A thin client is one that has minimal capabilities and runs the applications (and perhaps even the operating system itself) from a remote server. There is no medium client or stationary client.
Laptops and other portable devices utilize which expansion card?
A. MiniPCI
B. PCIe
C. PCI
D. SATA
A. MiniPCI
Laptops and other portable devices utilize an expansion card called the miniPCI. It has the same functionality as the PCI but has a much smaller form factor. PCI and PCIe are used in desktops. SATA is drive connector.