Study Guide for IT 4323 Test 1
In a fully connected mesh topology with six computers, we need ________ links.
15
Which of the following is not one of the characteristics of a data communication system?
All o the choices are correct
Data can flow in both direction all of the times in a _________ mode.
Full-duplex
_______transmission guarantees the data arrive at a fixed rate, such as with TV broadcasts.
Isosynchronous
Data can flow only in one direction all of the times in a _________ mode.
Simplex
In _________transmission, the bit stream is combined into longer frames which may contain multiple bytes.
Synchronous
In the TCP/IP protocol suite, which of the following is an application layer protocol?
The File Transfer Protocol (FTP)
In the TCP/IP protocol suite, which of the following is a network layer protocol?
The Internet Protocol (IP)
In the TCP/IP protocol suite, which of the following is a transport-layer protocol?
The Transmission Control Protocol (TCP)
An ARP reply is normally _______.
Unicast
The transport-layer packet in the TCP/IP protocol suite is called _______________.
a segment or a user datagram
The application layer in the TCP/IP protocol suite is usually considered to be the combination of ________layers in the OSI model.
application, presentation, and session
__________means loss of energy in a signal.
attenuation
Transmission impairment can be caused by ___________.
attenuation & distortion
Analog to analog conversion (modulation) is the representation of analog information by an analog signal. We need modulation if the medium is _________ in nature or if it is the only type of channel available.
bandpass
___________is the range of frequencies contained in a composite signal.
bandwidth
The ____________defines the number of bits that can fill the link between a sender and receiver.
bandwidth-delay product
____________ transmission refers to sending a signal over a channel without changing it to an analog signal.
baseband
For a digital signal, the number of bits sent in 1 second is referred to as the ____________.
bit rate
In baseband communication, the required bandwidth is proportional to the ____________.
bit rate
In the TCP/IP protocol suite, the physical layer is concerned with the movement of _______ over the physical medium.
bits
_________coding provides redundancy and provides inherent error detecting.
block
An ARP request is normally _______.
broadcast
A _______defines the number of data elements sent in 1s.
data rate
In TCP/IP, a message belonging to the network layer is decapsulated from a packet at the ________ layer.
data-link
In the TCP/IP protocol suite, the ______ layer is responsible for moving frames from one hop (node) to the next.
data-link
_________________is the process of changing one of the characteristics of an analog signal based on the information in the digital data.
digital to analog
____means the signal changes in form or shape.
distortion
The TCP/IP protocol suite consists of _______ layers.
five
__________defines how long it takes for an entire message to completely arrive at the destination from the time the first bit is sent out from the source.
latency
A ________ is a local address. Its jurisdiction is over a local network.
link-layer address
Media access control can be presented only in a __________ link(s).
multicast
In TCP/IP, a logical connection between an entity at the network layer can be made with another entity at the ________ layer.
network
In the TCP/IP protocol suite, a logical address is the identifier at the _______________.
network layer
Communication at the data-link layer is ___________________.
node-to-node
In ________mode, one bit is sent with each clock tick across the wire.
serial
If the sender is a host and wants to send a packet to another host on the same network, the logical address that must be mapped to a physical address is ______.
the destination IP address in the datagram header
__________is a measure of how fast we can actually send data through a network.
throughput
Frequency is the rate of change with respect to _______.
time
The_________ layer is responsible for the delivery of a message from one process to another.
transport
In the TCP/IP protocol suite, a port number is the identifier at the____________.
transport layer
Data-link layer of a broadcast link has __________ sublayer(s).
two
