Networked AV Systems
If text will be displayed during a presentation, the farthest viewer distance should be no more than ?
150 times the height of the text
How can you address ambient noise issues in a room?
Use acoustically absorptive materials in the room
Bit depth is defined as the number of states you have in which to describe the sampled signals _________
Voltage level
In order to accurately capture an analog signal, the minimum sampling rate must be _______ the frequency being sampled ?
at least twice
Which of the following statements accurately describes L2TP?
is a layer 5 protocol that allows remote users to establish a VPN tunnel using only a web browser.
Ambient light can be described as _____
light in the presentation environment other than the displayed light
A two conductor circuit is said to be balanced if _____
the conductors impedance are the same with respect to ground and each other
HDCP is a protocol supported by _____
Display port, DVI, and HDMI
The required height of a display should be based on________
Farthest viewer distance and viewer task
Domain Name System (DNS) is used to convert a ________to an IP address.
Fully Qualified Domain Name (FQDN)
What is a logic network diagram used for in AV management activities?
Helps in sequencing project milestones
The digital waveform is represented by a ________.
Square wave
______firewalls monitor addresses, ports and connection data to determine if a packet is part of an existing communication stream or a new stream.
Stateful
Which of the following best describes a function of a Network Address Translation (NAT)
-Allows multiple computers on a network to connect to the Internet using a single IP address -Converts IPv4 addresses to IPv6 -Enables devices with unregistered IP addressees to connect to the Internet
Which of the following best describes the function of Address Resolution Protocol (ARP)?
ARP matches IP addresses to the appropriate link layer addresses
Telnet and Secure Shell (SSH) operate at which layer of the OSI Model?
Application Layer
Which signal processor best compensates for the sound pressure level differences between loud and soft spoken presenters ?
Automatic gain controller
________ determines the range of frequencies that can pass through a circuit.
Bandwidth
A multiplayer switch is so named because it ______
Can perform functions at OSI Model Layers 2,3 and sometimes higher
Audioconferencing equipment includes either line or acoustic echo_________technology.
Cancellation
A ______ is a piece of equipment or software that uses an algorithm to decode or encode a signal.
Codec
_______ is/are a common firewall feature and /or security device that can block restricted websites or content
Content filtering
Which of the following statements accurately describes IPv6?
IPv6 uses three types of addresses: unicast, multicast and anycast
______ conferencing uses a switched telephone network to simultaneously share voice, video, and data among participants.
ISDN
Which of the following statements best describes the function of the proxy sever?
It replaces a clients address and other identifying information with its own before forwarding the clients request to a remote host
A ______is hardware or software that is designed to divided network activity between multiple hosts
Load balancer
MP3 and MPEG-4 files are examples of files using ______ compression
Lossy
Configuring a firewall for security may involve ______
Manually allowing and denying services and ports
Fault tolerance is best addressed by which network topology?
Mesh
If supported by the equipment, VLANs allow
Multiple separate broadcast domains to be defined on the same equipment
_____ is a general term for all protocols, polices, software and hardware that manage access to a network .
Network Access Control (NAC)
Bit rate is a measurement of the quantity of information ______in a digital signal stream and quantified in bits per second.
Over time
_____is a bandwidth optimization method that allows a network administrator to assign classes to certain types of traffic to ensure that bandwidth is available for high priority traffic
Quality of Service (QoS)
A_____examines the contents of a physical layer payload and then forwards packets to the appropriate address using the best available path.
Router
In order to securely connect to a remote host to execute command line commands, a network administrator would use ____
SSH
IPsec and SSL/TLS can be used for ______
Secure VPN connections
In the program phase, what must be determined to assure that a functional AV system scope will be created?
The specific tasks, functions, and applications of the end users
_______transport is preferable for live streaming video applications.
UDP (User Datagram Protocol
The use of an RCA connector, or phono connector, indicates a _____ circuit.
Unbalanced
