IST 220 Exam 1
What three phases are required in a connection oriented communication network
1. Establish connection 2. Transmission of data 3. Release of connection
The minimum size of TCP header is ___________________ bytes
20 bytes
The minimum size of UDP header is ___________________ bytes
8 bytes
is an example of low frequency communication
AM Radio
_____________is used to resolve an IP address into a MAC address.
ARP
_________________ field in the TCP header allows a sender to determine when to retransmit a lost packet.
Acknowledgment number
ARP stands for
Address Resolution Protocol
__________ is an example of a modulation scheme to convert input data into analog signals
Amplitude Shift Keying
_______________ is the top most layer of the TCP/IP reference model
Application layer
_______________provides an interface to end-users, so that end users can interact with rest of the layers of the TCP/IP reference model
Application layer
______________is one of the layers in the TCP/IP reference model that provides support to variety of users applications and protocols running at the top most layer of the TCP/IP reference model.
Application layer
is an example of radio communication
Broadcasting
________________is an example of a Metropolitan Area Network
Campus network
_________________ field in the TCP header allows a receiver to ensure the integrity of received data (i.e., detecting bit-errors in the received TCP segments).
Checksum
In a ______________________, data packets arrived at the destination host in the order in which they were transmitted from the source host.
Circuit switched network
__________________ is an example of a connection oriented communication network
Circuit switched network
is a transmission medium commonly used for distributing TV signals (i.e., cable TV)
Coaxial
We need a _________________ to convert input data into Digital Signals.
Codec
What is meant by a "dedicated communication line"
Connection Established between source/destination is referred as "dedicated communication line" - means that it is reserved only for a particular source/destination and cannot by used by another communication entity
________________is an application layer protocol that assigns leased IP addresses to devices at run time.
DHCP
__________________ is an application layer protocol use to resolve/convert an Host Name into an IP address
DNS
is an example of microwave communication
Dish network and point to point device communications
DNS stands for
Domain Name System
DHCP stands for
Dynamic Host Configuration Protocol
_______________is an application layer protocol that allows users to transfer data files from one computer to others.
FTP
A digital communication system carries analog signals all the way from local consumer to service provider.
False
An Increase in noise power increases the value of SNR (assume a constant signal power)
False
Coaxial cable is one of least expensive wired medium for building Ethernet based local area networks (LANs).
False
DHCP assigns leased static IP addresses to devices at run time (T/F)
False
Fiber optics is more vulnerable to noise/interference than coaxial due to the sensitivity of its glass fiber
False
In a circuit switched network, the dedicated communication line is shared among multiple users. (T/F)
False
In circuit switched network, source and destination can exchange data without establishing a dedicated connection/circuit. (T/F)
False
Signal to noise ratio is directionlly proportional to noise power of a signal (T/F)
False
Signals transmit at microwave frequency band can be received by a destination system without the line of sight transmission. (T/F)
False
Telnet is an application layer protocol that allows users to connect to a remote server over a secure tunnel. (T/F)
False
e Twisted pair can be used to build high speed data networks due its strong resistance against noise and interference.
False
is a transmission medium commonly used in building high speed networks
Fiber Optics
FTP stands for
File Transfer Protocol
Low Frequency signals propagate using ______________ communication
Ground-Wave
________________ is a communication protocol that works with the web browsers to allow users to access web pages stored on the webs servers.
HTTP
________________is an example of a Local Area Network
Home area network
HTTP stands for
Hypertext Transfer Protocol
_____________________is an Internet layer protocol that is used for error reporting.
ICMP
__________________ is used for transmitting the datagrams from one network to another until it gets to the destination network.
IP
_______________ is a type of network that requires out of order sequencing
IP Network
________________is an example of a Wide Area Network
IP Network
IP stands for
Internet protocol
Signals generate at the microwave frequency bands need ________________ method to propagate.
Line of sight
_____________ is responsible to deliver the data packets from one hop to another hop until the data packets reach to the network for which the destination host is attached
Link layer
___________________ is an example of a networking infrastructure where individual LANs are connected together using backbone lines and that covers relatively larger geographical area than a single small network
MAN
We need a _________________ to convert input data into Analog Signals.
Modem
The transmitter could be a ______ or _____ device
Modem; codec
which one of the followings can be used as an encoding scheme
Non-return-to-zero-level and manchester
_____________ Reference model has 7 layers.
OSI
OSI stands for
Open Systems Interconnection
Chances that data packets get lost or delayed during the transmission are high in _____
Packet switched network
In a __________________, each packet might follow a different route to get to the final destination
Packet switched network
______________is one of the layers in the TCP/IP reference model that transmits the data at the byte levels using the communication channel
Physical Layer
Signals generate at _________________ bands are Omni-directional signals (i.e., propagates in all directions across the transmitting antenna). a. Local frequency
Radio Frequency
_____________is a physical layer device.
Repeater
______________is an Internet layer device.
Router
______________________is an application layer protocol that allows users to securely connect to a server remotely over an insecure network
SSH
SSH stands for
Secure Shell
Which field of the TCP header is used to deal with out of order sequencing of data packets?
Sequence number
Signals generate at radio frequency bands need ________________ method to propagates signals
Sky-Wave communication
is one of the elements of a communication model that generates input data that needs to be transmitted
Source
_______________is an intermediate device that provides forwarding functionality to move the data from one hop to other.
Switch
_________________ is referred as a connection oriented protocol that provides end to end message reliability
TCP
__________ reference model has 5 layers.
TCP/IP
________ is a user command program that allows users to remotely connect to a server over an insecure network (i.e., the Internet)
Telnet
TCP stands for
Transmission Control Protocol
TCP/IP stands for
Transmission Control Protocol/Internet Protocol
_______ carries either digital or analog signal depending on in which communication system it is deployed.
Transmission medium
The ______________ is needed to convert the input data into the desired form of signal a.
Transmitter
_____________is one of the layers in the TCP/IP reference model that provides end-to-end message reliability (i.e., reliable delivery of messages all the way from source host to destination host)
Transport layer
In Packet Switched Network, source and destination can exchange data without establishing a dedicated connection/circuit (T/F)
True
In a packet switched network, each packet must contain the source/destination addresses. (T/F)
True
Most service provider's local offices (distribution centers) are interconnected with each other through high speed digital lines
True
SNR is a ratio of signal power to noise power
True
Signals that broadcast at the radio frequency band can be received by anyone who is within the coverage area (vicinity) of the transmitting antenna. (T/F)
True
Signals that propagate at low frequencies (such as AM signals) are highly vulnerable to noise and interference due to their close proximity to the surface of the earth (T/F)
True
The value of SNR is relatively high for the coaxial cable than the twisted pair due to its less vulnerability for noise. (T/F)
True
Twisted pair is relatively more susceptible to noise and interference than fiber optics.
True
is a transmission medium commonly deployed in telephone (or voice) networks
Twister Pair
UDP stands for
User Datagram Protocol
__________________ is an example of a networking infrastructure that covers largest geographical area than any other type of network
WAN
______________is a Link layer (also called network interface layer) device.
bridge and switch
In a ______________________, all required resources are reserved prior to the transmission of data between the source and destination hosts.
circuit switched network
_____________ is a type of network where all the transmitted data packets between the source and destination have to follow a predetermined route.
circuit switched network
________________________can be defined as group of computers and other computing devices connected together over communication channels to facilitate communication
computer networks
__________________ is an example of a connection-less communication network
packet switched network
