COMPTIA A+ A++

Platform as a Service PaaS

) is designed to deliver everything a developer needs to build an application . PaaS is not designed to deliver applications to end users . In addition , multi - tenancy is part of the SaaS model , not the PaaS model .

If a corona wire is dirty

, it might not create a uniform charge . As a result , the toner might not be attracted correctly to the photosensitive drum or paper . A vertical stripe is a typical symptom of this problem . cleaning a corona wire because they are delicate .

After software installation

. can cause problems if there is not enough memory for the software

You need to replace the hard disk in your laptop computer . Which of the following hard drive sizes should you choose for the laptop ?

2.5 "

802.11n transmission

802.11n supports both 5 GHz and 2.4 GHZ with a maximum transmission rate of 600 Mbps .

AGP

A dedicated bus type used dedicated video cards .

Z - Wave

A operates at 908.42 MHz , which means that Z - Wave users don't really have to worry about conflicting with other devices .

Attaches to the motherboard to allow additional cards to be installed .

AMR

Least pending request

An Application layer load balancer most commonly uses the least pending request ( LPR ) algorithm . This algorithm monitors all pending requests and routes them to the most available server . This algorithm allows the load balancer to instantly make adjustments in case there's a sudden surge of incoming connections while still monitoring all server loads .

IDE

An older technology where tge cable connects to the motherboard and two devices

A router

Connects two networks together so that a switch can forward data packets to unknown MAC addresses on another network .

PCI Express ( PCle )

Data rates depend on the protocol version and number of transmission lines .

What are the benefits of installing integration services ( IS ) on a Hyper - V Windows virtual machine ? ( Select two . )

Dramatically improves performance by installing Hyper - V aware drivers . Lets you cut and paste between the virtual machine and host .

Server memory modes

Dual - channel systems use two memory controllers , while triple - channel systems use three memory controllers . Quadruple - channel ( quad - channel ) systems use four memory controllers . Each memory controller can communicate with one or more memory modules at the same time .

PCI Express ( PCIe )

Each bus slot routes data through a point - to - point dedicated connection

You are assembling components in a network rack and need a device that connects three network segments . Which of the following devices will meet your networking needs?

Ethernet router is a device that connects two or more network segments or subnets . This would meet your networking needs .

64 bit vs 32 bit processors

Explanation The biggest advantage of 64 - bit processors over 32 - bit processors is the amount of memory that 64 - bit processors can use . 32 - bit processors have a limit of 4 GB . 64 - bit processors have a theoretical limit of 16 EB .

Hardware RAID

Hardware uses a special controller card that includes a RAID processor . While it's the most expensive solution , is provides much better performance and is more reliable than other RAID methods .

Which of the following BEST describes how a switch functions ?

It connects multiple cable segments or hosts and forwards data packets to the appropriate host .

Which of the following BEST describes the Edge Technology layer of the loT architecture ?

It includes all the hardware parts in the loT system .

Which of the following protocols is non - routable and requires another protocol to enable internetwork communications ?

NetBIOS is a non - routable protocol . It is often combined with IPX or IP to enable internetwork communicati NetBIOS was used in earlier versions of Windows but is rarely used today because nearly every operating supports IP .

A company is purchasing new laptops for their graphic artist division Which of the following display technologies provides better contrast and deeper blacks , resulting in better picture quality ?

OLED Organic light - emitting diode ( OLED ) displays don't require a backlight . While this means that they do not perform as well as LCD displays in lighted areas , they have a much better contrast ratio with deeper blacks .

AppleTalk

Over IP is the protocol used to allow older AppleTalk computers to use IP for internetwork communication .

Which of the following are technologies that Bluetooth utilizes ? ( Select two . )

Personal area network ( PAN ) 2.4 GHz radio wireless Explanation Bluetooth is a wireless networking standard that uses 2.4 GHz radio waves . These are the same type of radio waves used with 802.11 wireless networking , so the radio transmission can go through walls ( it is not limited to line - of sight connections ) . Bluetooth devices communicate using what is called a personal area network ( PAN ) , which is similar to an ad hoc wireless network .

RAID 5 vs RAID1

RAID 5 provides both fault tolerance and improved performance . RAID 1 ( utilizing mirroring ) provides only fault tolerance with no performance benefit . Both RAID 5 and RAID 1 can only sustain a loss of one disk in the set . Use multiple disk controllers to provide redundancy for the disk controller .

Peripheral Component Interconnect ( PCI )

Replaced ISA and VESA bus standards .

S / MIME

Secure / Multipurpose Internet Mail Extensions ) is a protocol that is used to encrypt emails . S / MIME allows the sender to digitally sign and encrypt emails . An encrypted email server encrypts emails between the server and an email client , but the encrypted email server stores the emails in an unencrypted form . A proper certificate must be used to encrypt and decrypt S / MIME emails .

Initializing

Shows while a disk is being converted from a basic disk to a dynamic disk .

Peripheral Component Interconnect ( PCI )

The CPU and bus can process concurrently .

Which of the following factors significantly determine the number of virtual machines that a host can accommodate ? ( Select two . )

The components installed on host machine . What has been allocated by the Hyper - V manager

PCI Express ( PCIe )

Typically used for network cards , USB cards , and sound cards .

Which of the following is an inherent vulnerability of embedded devices ?

Unknown environments. Embedded devices are sealed systems , which means that they are typically unknown environments . This means that the security administrator will not always know which hardware is in the device .

Which of the following are options for connecting a computing device , such as a notebook computer or tablet , to a cellular network ? ( Select four . )

Use an integrated cellular antenna to connect the device directly to the cellular network . Use a USB cellular adapter to connect the device directly to the cellular network . Use a USB cable to connect the device to the network through a smartphone . Use the device's Wi - Fi to connect to the network through a cellular Wi - Fi hot spot .

Mini - PCI

Which type of interface is typically used for internal wireless networking cards in laptops ?

DVI

You are helping a customer over the phone . The customer needs to connect a monitor that uses a digital interface . Which port should you instruct them to look for on the back of the PC ?

Forward lookup zone

You are the network administrator for a small consulting firm . The firm has recently rolled out a new intranet site and you are responsible for configuring the DNS . You are able to connect to the intranet site by using the IP address , but you cannot connect by using the hostnam Which of the following do you need to configure to access the site with the hostname ?

Zigbee signals

Zigbee is a specification based on IEEE 802.15.4 that operates on the 2.4 GHz frequency . This means that ZigBee signals can clash with wireless networks and other devices that run at the commonly used 2.4 GHz range .

Mirrored RAID

a type of RAID volume that you can create ( RAID 1 ) . It is not a basic RAID method implementation .

hypervisor

a virtualization component that allows virtual machines to interact with hardware the host machine . Type 1 runs directly on the host machine's hardware to manage the guest VM ( s ) . Type 2 runs on an operating system to manage the guest VM ( s ) . These virtualization types do not determine whether software desktop must run on a desktop or be hosted in the cloud .

Type 2 hypervisor

acts as a software application . It is run on any OS and can run several operating systems on virtual machines .

Type 1 hypervisor

acts as an OS on a physical host machine . Allows virtual machines to interact with hardware on the host machine. It runs directly on the host machine's hardware to manage the guest VMs.

A network adapter

allows a network cable to connect from the computer to another networking device .

Routers

are used to connect multiple networks together . When sending data in between networks , the router is responsible for forwarding the data to the proper network .

802.11b and 802.11g

both operate in the 2.4 GHz to 2.4835 GHz range , which causes interference with the client's wireless phone system .

An overheated CPU

can cause a spontaneous reboot or intermittent system crashes . A spontaneous reboot can also be caused by a bad power supply or device driver .

Unified Threat Management ( UTM ) appliance

combines multiple functions into one single device , including the firewall , IPS , content filtering , VPN support , and much more .

Molex

common type of connector used to power internal computer components .

Platform as a Service PaaS infrastructure

delivers everything a developer needs to build an application on the existing cloud infrastructure . The deployment comes without the cost and complexity of buying and managing the underlying hardware and software layers .

Bluetooth v3 and v4

devices have a maximum transmission speed of 24 Mbps when using High Speed ( HS ) mode .

Bluetooth v2

devices have a maximum transmission speed of 3 Mbps .

A Type 2 hypervisor

does not manage access to software programs on the host .

SATA

frequently used in modern computers to connect hard drives to the motherboard .

A switch offers

guaranteed bandwidth to each port , unlike a hub , which shares bandwidth among all the network ports

Bluetooth v1 devices

have a maximum transmission speed of 1 Mbps

Bluetooth v5 devices

have a maximum transmission speed of 48 Mbps when using High Speed ( HS ) transmission mode .

After hardware installation or removal

incompletely or improperly installed hardware can cause errors that appear to be memory - related .

For building a gamer computer tonuse SLI to improve performance

install multiple video cards and link those cards together so that multiple GPUs draw a single screen . Scalable Link Interface ( SLI ) from NVIDIA and CrossFire from AMD are two different methods for linking video cards . In most cases , you will need to install identical video cards , or at least video cards with very similar specifications . Cards are linked using a special bridge clip or through software ( depending on the implementation ) . Both the motherboard and the video cards must support the selected method ( either SLI or CrossFire ) . The motherboard must have at least two 16x PCIe slots . Some motherboards are able to link an onboard graphic controller and video card installed in a single PCIe slot . Connect the monitor to an output port on the first video card .

Ethernet switch

lets you connect multiple devices to the same network segment , but does not connect the network segments .

After a memory upgrade

memory is incompatible and was not installed and configured properly .

First boot of a new computer

memory is not properly seated , is missing , or the motherboard is defective .

A wireless controller

monitors and manages wireless access points in a wireless network architecture .

802.11a

operates in the 5.725 GHz to 5.850 GHz frequency range , which doesn't interfere with the phone system . However , the maximum speed is limited to 54 Mbps .

SAS

point - to - point interface typically found in enterprise - level storage systems , like RAID and tape drives

An Ethernet patch panel provides

provides an easy way to connect devices and accommodate different types of cabling , such as twisted - pair and fiber optic cables .

IPX

the protocol suite used by legacy NetWare servers .

IP is

the protocol suite used on the internet and is supported by all major operating systems .

Operating system RAID

uses RAID features within the operating system . Performance is typically better than software RAID because of integration with the operating system .

Software RAID

uses a driver and the system CPU for controlling RAID operations . This is the slowest RAID method implementation

SCSI

usually found only in high - end servers , mainframe computers , and RAID storage devices .

VDI ( virtualization desktop infrastructure

virtualization is designed to be the end user's main computer system , which can be accessed from something like a tablet or thin client . In addition , a VDI can be hosted by a cloud service provider .

Ghost images

within 2 to 3 cm of the original image are an indication that the ghosting is caused by the imaging drum . When a drum unit comes to the end of its useable life cycle , it may not discharge properly , leaving behind faint traces of the previous print job . An imaging drum can also become defective and discharge incorrectly between print runs , causing ghosting to occur . In either case , the best solution it to replace the imaging drum .

Software as a Service SaaS

would deliver software applications and services to the employees either over the internet or on a local area network . In addition , providing a simple multi - tenancy implementation would allow employees to have their own resources segregated from other employees . In a fine - grain multi - tenancy solution , resources are shared .

The system case typically includes wires that connect to the motherboard and provide the following functions

• Power switch Reset switch HDD LED activity • Case speaker

Cloud resources offer:

● Flexibility of access • Ease of use • Self - service resource provisioning . API availability • Service metering ● Ability to try out software applications