What is WDM?
WDM is conceptually the same as FDM, except that the multiplexing and demultiplexing
involve light signals transmitted through fiber optics channel.
What is TDM?
TDM is a digital process that can be applied when the data rate capacity of the transmission
medium is greater than the data rate required by the sending and receiving devices.
What is Synchronous TDM?
In STDM, the multiplexer allocates exactly the same time slot to each device at all times,
whether or not a device has anything to transmit.
List the layers of OSI
a. Physical Layer
b. Data Link Layer
c. Network Layer
d. Transport Layer
e. Session Layer
f. Presentation Layer
g. Application Layer
Which layers are network support layers?
a. Physical Layer
b. Data link Layer and
c. Network Layers
Which layers are user support layers?
a. Session Layer
b. Presentation Layer and
c. Application Layer
Which layer links the network support layers and user support layers?
The Transport layer links the network support layers and user support layers.
What are the concerns of the Physical Layer?
Physical layer coordinates the functions required to transmit a bit stream over a physical medium.
a. Physical characteristics of interfaces and media
b. Representation of bits
c. Data rate
d. Synchronization of bits
e. Line configuration
f. Physical topology
g. Transmission mode
What are the responsibilities of Data Link Layer?
The Data Link Layer transforms the physical layer, a raw transmission facility, to a reliable link and
is responsible for node-node delivery.
a. Framing
b. Physical Addressing
c. Flow Control
d. Error Control
e. Access Control
What are the responsibilities of Network Layer?
The Network Layer is responsible for the source-to-destination delivery of packet possibly across multiple
networks (links).
a. Logical Addressing
b. Routing
What are the responsibilities of Transport Layer?
The Transport Layer is responsible for source-to-destination delivery of the entire message.
a. Service-point Addressing
b. Segmentation and reassembly
c. Connection Control
d. Flow Control
e. Error Control
What are the responsibilities of Session Layer?
The Session layer is the network dialog Controller. It establishes, maintains and synchronizes the interaction
between the communicating systems.
a. Dialog control
b. Synchronization
WDM is conceptually the same as FDM, except that the multiplexing and demultiplexing
involve light signals transmitted through fiber optics channel.
What is TDM?
TDM is a digital process that can be applied when the data rate capacity of the transmission
medium is greater than the data rate required by the sending and receiving devices.
What is Synchronous TDM?
In STDM, the multiplexer allocates exactly the same time slot to each device at all times,
whether or not a device has anything to transmit.
List the layers of OSI
a. Physical Layer
b. Data Link Layer
c. Network Layer
d. Transport Layer
e. Session Layer
f. Presentation Layer
g. Application Layer
Which layers are network support layers?
a. Physical Layer
b. Data link Layer and
c. Network Layers
Which layers are user support layers?
a. Session Layer
b. Presentation Layer and
c. Application Layer
Which layer links the network support layers and user support layers?
The Transport layer links the network support layers and user support layers.
What are the concerns of the Physical Layer?
Physical layer coordinates the functions required to transmit a bit stream over a physical medium.
a. Physical characteristics of interfaces and media
b. Representation of bits
c. Data rate
d. Synchronization of bits
e. Line configuration
f. Physical topology
g. Transmission mode
What are the responsibilities of Data Link Layer?
The Data Link Layer transforms the physical layer, a raw transmission facility, to a reliable link and
is responsible for node-node delivery.
a. Framing
b. Physical Addressing
c. Flow Control
d. Error Control
e. Access Control
What are the responsibilities of Network Layer?
The Network Layer is responsible for the source-to-destination delivery of packet possibly across multiple
networks (links).
a. Logical Addressing
b. Routing
What are the responsibilities of Transport Layer?
The Transport Layer is responsible for source-to-destination delivery of the entire message.
a. Service-point Addressing
b. Segmentation and reassembly
c. Connection Control
d. Flow Control
e. Error Control
What are the responsibilities of Session Layer?
The Session layer is the network dialog Controller. It establishes, maintains and synchronizes the interaction
between the communicating systems.
a. Dialog control
b. Synchronization
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