Extron

The human eye can differentiate individual picture frames at which of the following rates?

10-12 frames per second

Which of the following is the average rate of speed at which sound travels through air, measured at sea level and 70F/20C degrees?

1128 feet/second (343 meters/second)

An omnidirectional microphone pickup pattern has a coverage of:

360 degrees

Which of the following can be found in various Extron Pro Series control processors for communication to external supported devices, such as TouchLink Pro touchpanels and user interfaces?

AV LAN port

Which one of the following is caused when a light wave of a given frequency strikes a material with a molecular structure of the same frequency, converting light energy into heat as it interacts with the material?

Absorption

Which of the following defines the science or study of sound, how it's created, its ability to travel within a space, and the way it's managed?

Acoustics

Which of the following describes signal processing?

All of the above Completely reformat a signal Amplifying or peaking a signal Converting signals from one format to another

Which of the following can negatively affect system performance?

All of the above Long cable runs Low quality cables Source devices with poor signal output

Which one of the following is an advantage of using fiber optics over twisted pair copper wire?

All of the above Minimal Data Errors Immunity to Electromagnetic Interference - EMI Longer Distance Capability

When designing a network, which of the following is important to consider throughout the design process?

All of the above Physical & Logical Device Topology Security & Quality Implementation Maintenance & Expansion Consideration

Which of the following capabilities are provided by Extron matrix switchers?

All of the above Source selection for each input and output Status LEDs that indicate the current switching & source status IR and RS-232 signal support

Which of the following are helpful considerations when selecting any type of Switcher?

All of the above The number of inputs and outputs The interface connector types The signal types

Which of the following is related to the amount of energy that a sound wave carries?

Amplitude

Which of the following is the amount of energy that a signal waveform carries, measured in Volts?

Amplitude

Which one of the following describes the relationship of width and height of an image?

Aspect Ratio

Which of the following refers to any reduction in signal strength due to the natural consequence of transmission over long distance, sometimes called loss?

Attenuation

Which one of the following is the loss of signal power over the length of the cable, due to the quality of the glass, absorption, scattering, or excessive bending within the fiber?

Attenuation

Which of the following has a ground wire, and carries analog signals as one hot wire and one cold wire in reverse polarity to cancel noise and interference?

Balanced cables

Which of the following describes a device's limited range of frequencies in which it can successfully operate?

Bandwidth

Which of the following network topologies daisy-chains the devices to a common medium where information travels along a backbone?

Bus Topology

Category cable wire pairs are twisted together for which of the following purposes?

Cancel out EMI from external sources

Which one of the following surrounds the center part of the glass fiber to cause reflection, keeping the light travelling down the fiber?

Cladding

Which of the following relationships describes the basic network operations of sending and receiving bidirectional data messages?

Client-Server

Which of the following is a device or program with technologies that compresses a signal for more efficient transmission, then decompresses it for viewing or editing?

Codec

Which one of the following indicates the amount of data used per pixel to present color information?

Color Bit Depth

Chroma Subsampling is a form of:

Compression

Which one of the following is the center part of the glass fiber that carries the light signals?

Core

Which one of the following is a reflective surface made up of thousands of tiny mirrors, each representing a single pixel?

DLP

Which one of the following digital broadcast standards is adopted in Europe, Asia, and Africa?

DVB

Which of the following layers of the OSI Model handles error detection with CRC checksums and flow control on a local network?

Data Link Layer 2

Which of the following streaming functions analyzes, de-compresses, and reconstructs the received packets, and delivers the signal to the end-point?

Decode

Which one of the following works to reverse the first two phases of the streaming process, reconstruct the signal, and deliver it to the end-point?

Decode

Which of the following can be used as an intermediate router for the subnet when an IP address is not within the network?

Default Gateway

Which of the following interfaces renders images as micro packets similar to network data?

DisplayPort

Which of the following is an undesirable alteration in the original waveform of an audio or video signal?

Distortion

Which of the following is an example of dropping the sound levels for background music, to focus the audio on an important voice-over announcement?

Ducking

Which one of the following types of IP Addresses are automatically assigned to network devices using a DHCP server?

Dynamic IP Address

Which of the following work as transmitter and receiver pairs to facilitate digital signal transmission over long distances via shielded or unshielded twisted pair, or fiber optic cable?

Extenders

Which one of the following is a collective term for bringing all possible fiber topologies from the telecom or cable carrier to its customers, based on the location of the termination point?

Fiber to the X - FTTX

The rate at which the sound vibrations repeat is called:

Frequency

When a microphone signal first enters a mixer, which of the following is used to control the input level of the audio.

Gain

Which of the following is used to increase the voltage (amplitude) level of an analog signal at the beginning of a long cable run and is measured in decibels (db)?

Gain

Which of the following is designed to capture spoken words limited to the speaker, commonly found on podiums or in conference rooms and boardrooms?

Gooseneck microphone

Which one of the following is a digital transmission interface for uncompressed video, multi-channel audio, and control data that also supports High-bandwidth Digital Content Protection - HDCP?

HDMI

Which of the following is referred to as the safety zone that allows audio peaks to exceed the nominal level without clipping?

Headroom

192.168.100.101 is an example of which type of address?

IP Address

Interlaced scanning may be described as:

Images drawn in two alternate fields as odd & even numbered lines

Which of the following control methods is a wireless one-way interface designed to control a single device?

Infrared

Which one of the following defines addressing methods and structures for datagram encapsulation that allows the delivery of packets from a source to a destination?

Internet Protocol - IP

Which of the following light sources have a low power output, and wide spectral width that radiates out in all directions, like a light bulb?

LED

Which of the following describes the amount of delay, or the time it takes for video and audio to be delivered from the source to the destination?

Latency

Which of the following are signal amplifiers that drive video, computer graphics, and stereo audio over extended distances?

Line Drivers

Which of the following is the delivery of content in real-time as events happen?

Live Content

Which of the following are protection methods for fiber optic cable?

Loose Tube and Tight Buffered

Which of the following types of compression refers to the loss of data when an approximation of the original image is reconstructed?

Lossy Compression

Which of the following is the last link of the audio signal path?

Loudspeaker

Which of the following file types are part of the Moving Picture Experts Group 1, Audio Layer III encoding techniques?

MP3

Which of the following is in a single enclosure with multiple inputs and outputs, that combines the capabilities of a standard switcher with a distribution amplifier?

Matrix Switcher

Which of the following is a low voltage level that comes out of a microphone when someone speaks into it?

Mic Level

Which one of the following is used in measuring the diameter of a fiber?

Microns

Which one of the following OSI Reference layers provides logical IP addressing for all devices that communicate over a network?

Network Layer 3

Which one of the following consists of thin organic layers between two conductors (transparent anode and metallic cathode) that convert electric current into light?

OLED

Which of the following is used to compensate for the lack of analog bandwidth response in displays, monitors, and projectors, and also the frequency roll-off caused by long cable runs?

Peaking

Which of the following is the smallest component of a digital image, composed of individual Red, Green, and Blue - RGB color elements?

Pixel

Which one of the following is the smallest component of a screen image, composed of individual Red, Green, and Blue - RGB primary colors?

Pixels

Which of the following cables and devices have special flame-resistant materials that are designed to meet safety test standards for resistance to smoke, fire, and heat above the ceiling or in other environmental air spaces?

Plenum-Rated

Within the OSI Model which layer allows for varying operating systems to communicate with each other on the network?

Presentation Layer 6

Which of the following projects a ray of light through a lens to display an image onto a surface?

Projector

Which of the following connector is commonly used for twisted pair cabling that carries digital audio over the network?

RJ-45

Which of the following describes how often the display can redraw the screen to show a new image?

Refresh Rate

Which one of the following measures an image's width and height using pixels?

Resolution

Which one of the following supports communication between subnets and across different networks, by determining the next network point to which a packet is forwarded as its destination?

Routers

Which of the following is the process of converting a video signal from one resolution to another?

Scaling

Which one of the following is caused when a light signal collides with a very small particle or impurity in the glass, knocking it off course in all directions?

Scattering

Which of the following is transmitted as electrical impulses of encoded data?

Signals

Which of the following are the basic types of fiber?

Singlemode and Multimode

Which one of the following compression methods is referred to as Intra-Frame compression?

Spatial Compression

Which one of the following creates a permanent joint between the ends of two fibers by mechanically joining them or fusing together with heat?

Splices

Which one of the following network topologies connects a central node to every device on the network, acting as a multiport repeater?

Star Topology

Which of the following is manually configured as a fixed address for a device, and does not change?

Static IP Address

Which of the following carries two independent channels for left and right audio, and creates the impression of sound heard from various directions?

Stereo sound signals

Which one of the following is a method of transporting media content over a network as a steady, continuous flow, allowing playback to proceed while subsequent data is received?

Streaming

Which one of the following twisted pair wiring standards define the pinouts for a crossover cable connection?

T568A to T568B

DVI and HDMI both use a signaling method known as:

TMDS

When the angle at which light strikes the cladding is low enough, what occurs when all of the light is reflected back into the core?

Total Internal Reflection

Which one of the following protocols is responsible for the actual delivery of data over a network?

Transmission Control Protocol

An acceptable viewing experience for consumer purposes may not meet the needs of professional applications.

True

Fiber optic shards of glass are extremely sharp and can easily penetrate skin?

True

True or False: A single matrix switcher can be used to drive a divisible classroom and operate the space as an independent room or combine it into a single large presentation space.

True

True or False: Progressive Scanning draws each line sequentially from left to right, creating a full image frame in one pass from top to bottom.

True

WANs cover wide geographical areas and are commonly used to link different locations together.

True

Which of the following is used for connecting peripheral devices (keyboard, mouse) to computers, as well as for power to charge portable devices?

USB

Which of the following has two conductor wires, one for the hot audio signal, and one for ground?

Unbalanced cables

Which one of the following uses one-to-one transmission from one point in the network to another?

Unicast

Which of the following allows its users on a less secure network to send and receive data through a safe connection by extending a private network across the Internet?

Virtual Private Network - VPN

Which of the following describes the distance of traveling energy, such as light or sound, in a repeating pattern?

Wavelength