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Progression Field Tech IV - V Exam Questions And Correct Answers
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Progression Field Tech IV - V Exam Questions AndCorrect Answers 2024-2025
Baseband signaling - Answer is predominant in Ethernet networks.
two ways we can use a flow of energy to carry data - Answer Analog and digital
Simplex - Answer A signal may flow in only one direction. A commercial radio station
uses simplex communication, because listeners cannot transmit radio signals back to the
station.
Half-duplex -Answer Signals may flow in either direction, but not simultaneously.
Example a two-way radio allows only one user to speak at any one time.
Full-duplex - Answer Signals can travel in both directions at the same time. The best
example of full-duplex communications is the telephone. One wire carries a signal from
the telephone company to your home, and another wire carries a separate signal from
your home back to the telephone company. This way you can hear and talk at the same
time.
Synchronous - Answer The effective communicating parties or endpoints use time to
arrange the communication. The two communicating computers in a data network use
each clock "tick" to detect whether a digital bit is a 1 or 0. In other words, at each interval
of time, a computer measures the voltage on the network cable to check whether it is
high (binary 1) or low (binary 0). Because the timing determines the meaning of the
signal, it is required that the endpoints are synchronized to the same clock before the
signals are sent.
Asynchronous - Answer Bits are not sent on any strict schedule. For example, a
computer modem normally represents one character or letter using 8 bits. The modem
sending the character sends out a "start" bit to alert the end device that a signal is
coming. After the last, or eighth, bit of the character has been transmitted, the sending
modem sends out a "stop" bit indicating it has finished sending the character. Each
character sent by the modem follows this pattern. Hence, a receiving modem must 'stay
in step' with the signal only long enough to send out 8 bits. If the sending and receiving
clocks are off just a trifle, such brief transmissions will work.
,Which of the following are MOST characteristic of a broadband network? -Multiple analog
channels -(END
Data bus size - Answer The size of the bus indicates how many bits of data a CPU can
operate on at any one time
Clock speed - Answer The clock speed indicates the number of instructions per second
the processor can process. Each "tick" of the clock is termed a cycle, hence clock speed
is measured in cycles per second. A cycle per second is called 1 hertz, 1000 cycles per
second is 1 kilohertz, 1 million cycles per second is called 1 megahertz, and 1 billion
cycles is called 1 gigahertz. A CPU that runs at 400,000,000 cycles per second is a
400-MHz processor.
storage - Answer used to describe media that hold data for longer periods, even when the
power goes off.
What hardware components are present in all computer systems? (Select all that apply.) -
Answer Processor
Memory
Storage
I/O
I/O - Answer Input / Output
A NIC is used for: - Answer Signaling
What general type of computer component is a sound card? - Answer Input/output
Distributed applications - Answer Applications can be distributed on the network based
on their resource requirements. An example would be an application that provides
computing-intensive services, and hence it can be installed on a computer that has very
high processing capacity. At the workstation, the user's client application is installed,
,which can provide high end graphical display capabilities.
Resource sharing - A server process can often serve many clients. Thus, client/ server
architecture is a good way to share many types of resources across an organization.
Applications - software programs used to perform work.
Peer-to-peer networking software; Part of the answer comes with most popular desktop
OSs. Each individual user configures software settings to allow or disallow the sharing of
that computer's resources by other users. There is no central authority that decides what
users may have access to what resources.
A network OS-OSNOS-Answer also called a client/server OS, provides centralized control
of all network resources. A network administrator can decide what each user may see
and do on the network. By far, the most common NOS packages are Microsoft and
UNIX/Linux servers.
Which of the following is managed by the OS?-Answer Keyboard input
Screen display
File I/O
Peripheral control
The primary purpose of a device driver is to control hardware under the supervision of
the OS. True or False? - Answer True
Most LANs - Answer use star bus topologies.
Personal Area Networks (PAN) - Answer are small and local. PANs connect by means of
Bluetooth wireless and can connect phones, tablets, mice, keyboards, and more.
Local Area Networks (LAN) - Best answer might be a few nodes in a home office, to
, hundreds of nodes in a corporation. However, a LAN is typically confined to a single
building.
Campus Area networks (CAN) - Best answer include LANs connected across multiple
buildings, using transmission links owned by the company that owns the network.
Metropolitan Area Networks (MAN) - Answer are several LANs connected together, often
in different locations throughout a city or small region. The interconnections between the
various LANs are usually leased from companies that provide telephony and data
services.
Wide Area Networks (WAN) - Answer are similar to MANs, except that the ranges of
distances are greater. A WAN may encompass sites in the same country, or other
countries.
The Global Area Networks (GAN) - Answer are designed in such a way that they provide
unlimited network access to users without any disruption anywhere around the globe
through the LAN, wireless, cellular, and satellite connections.
Which of the following network topologies forms a closed loop? - Answer Ring topology
Which of the following network topologies connects devices to a shared straight-line
cable? - Answer Bus topology
Twisted pair - Answer is the most common type of copper cable used in networks.
There are two major ways to limit noise and crosstalk in a cable design: - Answer
Shielding
Cancellation
Coaxial Ethernet networks must obey the "5/4/3 rule:" - Answer Up to five segments can
be connected in a series between transmitter and receiver.
Up to four signal-repeating devices (repeaters, hubs, bridges, or switches) may be used
to connect segments.
Only three segments may contain Ethernet nodes.
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