1.1 Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts Flashcards
Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts
What is MTU?
Maximum Transmission Unit is the largest size a data unit can be passed from a source to a destination without being fragmented.
Host A is communicating with Host B. Host A uses the American Standard Code for Information Interchange (ASCII) and Host B uses Unicode. The clients agree to translate the communication to ASCII. What layer of the Open System Interconnection (OSI) model does the agreement and translation occur?
The Presentation layer (Layer 6) transforms data between the format required for the network and the format required for the application. For example, the Presentation layer is used for character set conversion.
The Application layer (Layer 7) receives the translated data. This protocol does not encapsulate any other protocols or provide services to any protocol.
The Session layer (Layer 5) represents the dialog control functions that administer the process of establishing the dialog, managing data transfer, and then ending the session.
The Transport layer (Layer 4) identifies each type of network application by assigning it a port number.
Which Open Systems Interconnection (OSI) layer assumes responsibility for managing network connections between applications?
Most application protocols require the exchange of multiple messages between the client and server. This exchange of such a sequence of messages is called a session, thus, the Session layer. Sessions can work in three modes: simplex, half-duplex, or duplex.
Some form of transmission or physical media creates a link between network nodes. The Physical layer of the OSI model (layer 1) is responsible for the transmission and receipt of bits from one node to another node.
The Network layer (layer 3) transfers information between networks. It is the Session layer that manages connections between applications.
The Data Link layer (layer 2) transfers data between nodes on the same logical segment. Whereas, the Session layer manages connections between applications.
An engineer troubleshoots a network connectivity issue that the server team reported. The engineer notices that the trunk port is down between two routers. After checking the fiber link on the router, the engineer moves the cable and notices that the link light comes on. The issue is MOST likely a part of what layer of the OSI model?
The physical layer of the OSI model is responsible for the transmission and receipt of the signals that represent bits of data from one node to another node.
The network layer is responsible for moving data around a network of networks, known as an internetwork or the Internet.
The data link layer is responsible for transferring data between nodes on the same logical segment.
The session layer (layer 5) represents functions that administer the process of establishing a dialog, managing data transfer, and then ending (or tearing down) the session.
An organization has asked a network administrator to research and submit a purchase order for new network access points. The network administrator is attempting to choose between using wired and wireless access points. Which layer of the OSI model is the administrator making a decision?
The physical layer of the OSI model is responsible for the transmission and receipt of the signals that represent bits of data from one node to another node.
The network layer is responsible for moving data around a network of networks, known as an internetwork or the Internet.
The data link layer is responsible for transferring data between nodes on the same logical segment.
The session layer (layer 5) represents functions that administer the process of establishing a dialog, managing data transfer, and then ending (or tearing down) the session.
