Font size
WorksheetsOSI Layer
Total questions: 48
Worksheet time: 2hrs 36mins
Routers operate at which layer of the OSI model?
physical
transport
network
MAC sublayer of the data link layer
session
Bits are packaged into frames at which layer of the OSI model?
data link
transport
physical
presentation
application
Which of the following are benefits of using a layered network model?
A . it specifies how changes to one layer must be propagated through the other layers
B . it facilitates troubleshooting
C . it focuses on details rather than general functions of networking
D . it breaks the complex process of networking into more manageable chunks
E . it allows layers developed by different vendors to interoperate.
A and B only
B, D, and E
A and C only
none of the above
all of the above
The layers of the OSI model, from the top down, are:
application, presentation, session, transport, network, data link, physical
session, presentation, data transport, MAC, network, physical
physical, data link, network, transport, session, presentation, application
presentation, application, session, network, transport, data link, physical
application, encryption, network, transport, logical link control, physical
Encryption takes place at which layer?
application
presentation
session
transport
data link
True or False: The network layer uses physical addresses to route data to destination hosts.
True
False
Which layer establishes, maintains, and terminates communications between applications located on different devices?
application
presentation
session
network
data link
IP is implemented at which OSI model layer?
transport
session
data link
network
logical link control
Which layer handles the formatting of application data so that it will be readable by the destination system?
application
presentation
session
transport
data link
Packets are found at which layer?
data link
transport
network
session
physical
What does OSI stand for?
International Standards Organization
Open Systems Interconnect
Operating Standard Information
Operating System Interconnection
Open Systems Interface
Repeaters and hubs operate at which layer?
network
data link
transport
physical
session
Bit synchronization is handled at which layer?
data link
session
transport
presentation
physical
True or False: most logical addresses are preset in network interface cards at the factory
True
False
Bridges operate at which layer of the OSI model?
physical
data link
transport
network
session
What are the sublayers of the data link layer?
MAC and IPX
hardware and frame
MAC and LLC
WAN and LAN
TFTP and telnet
Which OSI layer header contains the address of a destination host that is on another network?
application
transport
network
physical
data link
What layer are the RJ-45 connectors found?
transport
network
physical
data link
What layer are NICs found?
Layer 1
Layer 7
Layer 4
Layer 2
Layer 5
Which layer in the OSI model covers routing between networks?
Physical
Data Link
Network
Transport
Which layer in the OSI model do MAC addresses and switches use?
Physical
Data Link
Network
Transport
Which layer of the OSI model is used to create a connection so that a host can transfer files?
Physical
Session
Application
Presentation
Which layer in the OSI model is responsible for logging on and off?
Physical
Session
Application
Presentation
Which layer in the OSI model is used to encrypt data?
Physical
Session
Application
Presentation
Which layer in the OSI model includes the cable and network adapters?
Physical
Session
Application
Presentation
How many layers does the TCP/IP model have?
3
4
6
7
Which layer in the OSI model is included in the TCP/IP model?
Physical
Data Link
Transport
Application
Which protocol is used to translate IP addresses to MAC addresses?
RARP
ARP
DNS
WINS
The OSI model is made up of _____ ordered layers
five
seven
four
six
Layer 3 uses the services provided by ______
layer 2
layer 4
layer 3
layers 2 and 4
Trailers are usually added only at layer ______
2
3
4
5
______ are added to the data at layers 6, 5, 4, 3, and 2
headers
trailers
trailers and headers
none of the choices
_______ layer ensures reliable transmission on a node to node link
physical
data-link
network
transport
_______ layer ensures end-to-end reliable data transmission.
physical
data-link
network
transport
______ layer is mostly hardware
physical
data-link
network
transport
The upper OSI layers are almost always implemented in _______.
hardware
software
hardware and software
firmware
Lower layers are a combination of _______
hardware
software
software and hardware
firmware
The data-link layer divides the stream of bits received from the network layer into manageable data units called _______
frames
datagram
packet
bytes
Network layer oversees end-to-end delivery of individual ______
data
frames
packets
bytes
The _______ layer establishes, maintains, and synchronizes the interaction between communicating systems
transport
application
presentation
session
The _______ layer is connected with the syntax and semantics of the information exchanged between two systems
session
transport
presentation
application
The ______ layer decides the location of synchronization points
transport
session
presentation
application
Decryption and encryption of data are the responsibility of the ____ layer
physical
data-link
presentation
session
Dialog control is the function of the ______ layer
transport
session
presentation
application
Mail services and directory services are available to network users through the ______ layer.
data-link
session
transport
application
As the data packet moves from the lower to the upper layers, headers are ______
added
subtracted
rearranged
modiified
Describe the headers and trailers and how do they get added and removed in internetworking.
Headers and trailers are control data added at the beginning and the end of each data unit at each layer of the sender and removed at the corresponding layers of the receiver
Headers and trailers are control data added at the beginning and the end of each data unit at each layer of the receiver and removed at the corresponding layers of the sender
They provide source and destination addresses, synchronization points, information for error detection, etc.
They are preview or coming attraction for the upcoming data.
Match the following to one or more layers of the OSI model:
i. Route determination
ii. Flow control –
iii. Interface to transmission media
iv. Provides access for the end user
i. data link and transport layer
ii. network layer
iii. physical layer
iv. application layer
i. network layer
ii. data link and transport layer
iii. application layer
iv.physical layer
i. application layer
ii. data link and transport layer
iii. physical layer
iv. network layer
i. network layer
ii. data link and transport layer
iii. physical layer
iv. application layer
