CompTia A+

which of the following channels would commonly be used on an 802.11 wireless network?

6

ANT+ protocol (Advanced and adaptive Network Technology plus protocol)

A 2.4 GHz radio protocol that operates at low speeds over distances up to 30 meters, and is used primarily to manage sensors such as fitness trackers, medical devices, and watches.

SSID (Service Set Identifier)

A 32-bit alphanumeric string that identifies a WAP and all devices attached to it.

tracert command

A Microsoft Windows-based command that displays every router hop along the path from a source host to a destination host on an IP network. Information about a router hop can include such information as the IP address of the router hop and the round-trip delay of that router hop.

SaaS (Software as a Service)

A form of cloud computing where a firm subscribes to a third-party software and receives a service that is delivered online.

IaaS (Infrastructure as a Service)

A method that provides network resources such as for storage and allow the client can deploy software and add network components such as firewalls.

WPS (Wi-Fi Protected Setup)

A network security standard that allows non-technical users of home networks to easily control network access.

PaaS (Platform as a Service)

A service model in which various platforms are provided virtually, enabling developers to build and test applications within virtual, online environments tailored to the specific needs of a project.

NFC (Near Field Communication)

A set of standards used either for small amounts of data or else for configuration data that can bootstrap a faster Bluetooth or Wi-Fi connection. Devices are placed within close proximity within line of site for sharing data wirelessly.

RFID (Radio Frequency Identification)

A technology that allows identification and communication between nodes using electromagnetic fields.

Spread Spectrum

A wireless technology that breaks the transmission into a large number of subchannels on nearby frequencies.

MIMO (Multiple-Input and Multiple-Output)

A wireless technology that uses multiple antennas to simultaneously transmit and receive separate data streams on the same channel.

Which of the following cables would BEST support an application that requires a 600 mbps throughput and lowest price point?

CAT 5e

A projector's image begins to flicker during a presentation. The laptop display does not produce this issue. When a technician changes the resolution on the laptop, the issue persists. Which of the following is the NEXT step the technician should take?

Check the connectivity of the VGA cable

DaaS (data as a service)

Cloud computing service that allows users and applications to access a company's data.

A customer accidentally drops a laptop while it is charging. The next day, the customer notices the laptop will not turn on and calls a technician to investigate. The technician confirms the laptop will not turn on and calls a technician to investigate. The technician confirms the laptop will not turn on even though it is connected to the power adapter. Which of the following components is the MOST likely cause of this behavior?

DC jack

A server needs a RAM upgrade, and a technician has been tasked with retrieving the RAM from storage and then installing it. Which of the following is the BEST RAM type for the technician to retrieve?

DDR4

IR

Devices use haptic confirmation for sharing data wireless.

A technician is replacing a broken screen on a new company laptop but does not have repair information from the vendor. What is the BEST way to proceed?

Document and label the cable and screw locations.

A user wants to print a large print job on both the front and back sides of the paper. Which of the following settings should the technician advise the user to change the printer to?

Duplex

A network administrator must install a device that will proactively stop outside attacks from reaching the LAN. Which of the following devices would BEST meet the organization's needs?

IPS

A user reports that printing on heavy card stock paper results in the image smearing if touched. When printing on plain paper, the problem does not occur. What is the NEXT troubleshooting step that should be performed?

Increase the fuser temperature

A technician wants to block remote logins to a server. Which of the following ports should be blocked?

Port 23 (Telnet)

Which of the following cloud computing concepts allows scalable services to be provided to the client?

Rapid elasticity

ipconfig /all

Show all TCP/IP details

USB-C

The newest, and most versatile, type of USB connector. Non-directional connector.

A user is having a problem with printing a specific document type. The network printer OCP shows that the printer is online with no errors. Other users are not having the same issue. The user sends the document to another printer and the document prints. Which of the following should a technician do FIRST in troubleshooting the problem?

Verify the user is sending the document to the correct printer queue.

A technician is setting up a VM for use in testing software deployments. The VM is offline, but the hypervisor is not. Which of the following settings should the technician change to resolve this issue?

Virtual CPU

ipconfig /release

command releases any IP configurations received from DHCP server

Tethering

devices that are connected via a wire for sharing data wirelessly.

ipconfig/flushdns

empties the DNS cache

The feature that allows users to store files in cloud-based when necessary, but can removed when space is freed up, is known as:

on-demand

Bluetooth

standard designed for wireless PAN applications that operates in the same 2.4 GHz RF band used by Wi-Fi, and is commonly used to connect peripherals to computers and mobile devices. Paired using a code to share data wirelessly.

Which of the following devices can be used to connect multiple devices within broadcasting to every network port?

unmanaged switch