1.3 The OSI Model
- Physical
At which layer of OSI do hubs operate? - Physical - Layer 3 - Data Link - Internet
- Enabling communication between network clients and services - Integration of network functionality into the host operating system.
In the OSI Model, which of the following functions are performed at the Application Layer? (select All that apply) - Data translation - Enabling communication between network clients and services - Conversation Identification - Integration of network functionality into the host operating system.
- specify data format (such as file formats) - encrypt and compress data
In the OSI Model, which of the following functions are performed at the Presentation Layer? - Maintain separate client connections - transmit data frames - provide network services - specify data format (such as file formats) - encrypt and compress data - Handle general network access, flow control, and error recovery.
Explanation: Device/Function OSI Layer HTTP >>> Application ASCII >>> Presentation Session ID Number >>> Session Port Numbers >>> Transport Router >>> Network Switch >>> Data Link Wireless Access Point >>> Physical
Matching Question - Network Functions/Devices and OSI Model
- Defining a unique hardware address for each device on the network - Letting devices on the network have access to the LAN
Which of the following are functions of the MAC sublayer? (Select two) - Defining a unique hardware address for each device on the network - Letting devices on the network have access to the LAN - Mapping hardware addresses to the link-layer addresses - Creating routing tables based on the MAC addresses
- Movement of data across network cables
Which of the following are performed at the Physical layer of the OSI Model? - Enablement of network services - Provision of an environment in which to run network applications - Movement of data across network cables - Data Translation
- Switch - NIC
Which of the following devices operate at the OSI Model later 2? (Select 2) - Router - Switch - Firewall - Hub - NIC - Repeater
- Switches - Repeaters
Which three of the following devices operate at the Data Link layer of OSI? - Switches - Bridges - NIC - Routers - Repeaters - Hubs
- Identifying physical Drives - Controlling how messages are propagated through the network
Which two of the following are included as part of the Data Link Layer specifications? - Identifying physical Drives - Controlling how messages are propagated through the network - Composition of electrical signals as the pass through the transmission medium - Synchronizing individual bits as they are transmitted through the network
- Data Link
Your company purchases a new bridge, which filters packets based on MAC Address of the destination computer. On which OSI layer is this device functioning? - Data Link - Session - Presentation - Transport
- Network
At what OSI Layer does a router operate to forward network messages: - Data Link - Network - Transport - Physical - Session
- Routes messages between networks
In the OSI Model, what is the primary function of the Network layer? - Transmits data frames - Allows applications to establish, use and end a connection - Routes messages between networks
Explanation: TCP/IP OSI Application >> Application Application >> Presentation Application >> Session Transport >> Transport Internet >> Network Network Interface >> Data Link
Match each layer of the TCP/IP model on the left w the corresponding layer of the OSI Model on the right. Each option on the left can be used more than once.
- MAC - LLC
The Data Link Layer of the OSI Model is comprised of two sublayers. What are they? (select two) - MAC - DLC - LLC - SAN - LAT
- Transport
Which OSI Model layer is responsible for guaranteeing reliable message delivery? - Data Link - Session - Application - Transport