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WorksheetsNF: Unit 3 Review
Total questions: 15
Worksheet time: 8mins
Which layer of the OSI model is responsible for translating data formats between a network service and an application?
Application layer
Presentation layer
Session layer
Transport layer
What does the 'P' in the OSI model mnemonic stand for?
Physical
Data Link
Presentation
Application
Which layer of the OSI model is responsible for data presentation?
Presentation
Application
Session
Transport
What is the function of the Data Link layer in the OSI model?
Error detection and correction
Routing data packets
Data encryption
Interface for end-user processes
Which of the following devices is used to repeat signals in Layer 1?
Modem
Transceiver
Repeater
Switch
Which of the following is NOT a function of the physical layer?
Transmitting bits
Managing data encryption
Using cables for data transmission
Employing wireless media
What is the primary function of the Data Link layer?
Transfers data between nodes on the same logical segment using hardware addresses
Encrypts data for secure transmission
Routes data between different networks
Manages user sessions and connections
Which of the following is NOT an example of a Data Link layer device?
NIC
Bridge
Switch
Router
What type of addresses does the Data Link layer use to transfer data?
IP addresses
MAC addresses
Domain names
Port numbers
Which device is used to connect multiple hosts in a network at the Data Link layer?
Router
Switch
Firewall
Modem
Which of the following is NOT a function of the Data Link layer?
Transferring data between nodes
Organizing bits into frames
Routing data between networks
Using hardware addresses
What is the function of a basic firewall at Layer 3?
To encrypt data
To block unauthorized access
To store data
To provide internet access
Which of the following is a key feature of Layer 3?
Data compression
Packet forwarding
Signal modulation
User authentication
What is the main purpose of using a destination IP address in networking?
To encrypt data
To identify the source of data
To forward packets to the correct network
To manage user access
Which port is used by host 2.3 to send email traffic to host 2.1?
80
445
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