Review for Final #4
In an analog addressable system, the determination of the alarm state is performed by the
control panel
The data bus serves as a
parallel data path
An access control method that depends on a random time interval delay to recover from a data collision is known as the
stochastic method
To facilitate parallel communications, data is divided into multiple
streams
The maximum data transfer rate available with USB 2.0 is
480Mbps
An RS-232 cable can be used for distances up to
50 feet
Which is the following is a correct statement about power line carrier systems?
A computer can be used to program and monitor PLC systems
The layer of the OSI model that directly interacts with user's software programs is the
Application layer
In the OSI model, the layer that forms information into strings or blocks and puts each piece of information in the right place is the
Data link layer
The IP portion of TCP/IP provides
Data segmentation
Which of the following correctly describes a power line carrier system function?
Data signals are imposed on the AC power wiring
The disadvantage of a ring network is
If a node fails, the network is at least partially disabled
In the OSI model, cables and connectors are considered part of the
Physical layer
In a distributed control system, access to the medium is controlled at each
Station or Node
A system that permits discrete identification of alarm signals at the detector level is a(n)
addressable
A device used to link networks that use different protocols is a
bridge
A secondary bus is connected to a primary bus by a communication module that is sometimes called a
bridge
The joining of two or more computers with a communication link forms a(n)
network
A token-passing access scheme handles emergency conditions through the use of
priority settings
A receiving device has a set of memory locations called
registers
To prevent the potential bottlenecks of the star topology, some networks arrange their nodes in a
ring topology
The device used to link multiple data paths through a series of interconnected networks is the
router
Which of these network devices often includes a firewall?
router
The type of network technology that requires a hub is the
star network
Controllers in a network can share information because
they use a common language
