WorksheetsDDC_Midterm Quiz
Total questions: 20
Worksheet time: 20mins
What is the purpose of the physical layer in the OSI model?
To deliver packets from the source host to the destination host
To provide services to the user
To control and synchronize the dialog
To move individual bits from one hop to the next
Which layer in the OSI model is responsible for reliable process-to-process delivery of a message?
Physical Layer
Transport Layer
Network Layer
Data Link Layer
What is the function of the session layer in the OSI model?
To move frames from one hop to the next
To provide translation, compression, and encryption
To deliver individual packets from the source host to the destination host
To control and synchronize the dialog
Which layer in the OSI model is responsible for translation, compression, and encryption?
Presentation Layer
Application Layer
Transport Layer
Data Link Layer
What is the main responsibility of the application layer in the OSI model?
To move individual bits from one hop to the next
To provide services to the user
To control and synchronize the dialog
To deliver packets from the source host to the destination host
How many layers are there in the OSI model?
Four
Five
Six
Seven
Which protocol suite does not exactly match the layers in the OSI model?
TCP/IP Protocol Suite
OSI Model
ISO
International Standards Organization
What are the four levels of addresses used in an internet employing the TCP/IP protocols?
Physical, Logical, Port, and Specific
Physical, Network, Transport, and Application
Physical, Data Link, Network, and Transport
Physical, Internet, Transport, and Application
What type of address is a 16-bit address represented by one decimal number?
Physical Address
Logical Address
Port Address
Specific Address
What are sets of clearly defined rules, regulations, standards, and procedures that enable hardware and software developers to make devices and applications that function properly at a particular layer?
Protocol
TCP/IP
Networks
Interconnection
What does the term telecommunication mean?
Communication between two devices
Communication at a distance
Communication using wire cables
Communication via optical fiber
What is data communications?
The exchange of data between two devices
The exchange of information between two parties
The exchange of data using wire cables
The exchange of information via optical fiber
What is a network?
A set of devices connected by communication links
A set of computers connected by communication links
A set of printers connected by communication links
A set of devices capable of sending and receiving data
What is the performance criteria of a network?
Depends on network elements
Measured in terms of delay and throughput
Measured in terms of availability/robustness
Data protection against corruption/loss of data
What is the type of connection in a point-to-point network?
Multiple recipients of single transmission
Single transmitter and receiver
Connection of devices
Type of transmission - unicast, multicast, broadcast
What is the physical topology of a star network?
All devices connected to a single cable
Devices connected in a circular manner
Devices connected to a central connection point
A combination of star and bus networks
What is the category of network that provides local interconnectivity?
Wide Area Networks (WANs)
Metropolitan Area Networks (MANs)
Local Area Networks (LANs)
Isolated LANs
What is the Internet?
A communication system for organizing data
A set of rules that govern data communications
A network topology for LANs
A set of devices connected by communication links
What are the key elements of a protocol?
Syntax, semantics, and timing
Structure, interpretation, and speed
Data protection, availability, and reliability
Delay, throughput, and security
What does the syntax element of a protocol determine?
How to read the bits - field delineation
Interprets the meaning of the bits
When data should be sent and what
Speed at which data should be sent or received
