OSI Flashcards
What is used to enable the efficient transmission of data among hosts on a network?
OSI model
The OSI model was developed by what organization?
International Organization for Standardization
The OSI model consists of what seven layers?
Application
Presentation
Session
Transport
Network
Data link
Physical
HTTP, FTP, Telnet, NTP, DHCP and PING are found in what three layers of the OSI model?
Application, Presentation, Session
TCP/UDP are found in what layer of the OSI model?
Transport
IP, ARP, ICMP and IGMP are found in what layer of the OSI model?
Network
Ethernet is found in what two layers of the OSI model?
Data Link and Physical
What does OSI stand for?
Open System Interconnection
What model consists of a seven-layer architecture that organizes the sending of data from hosts across a network?
OSI model
Who developed the OSI model?
International Standards Organization (ISO)
How many layers does the OSI model have?
Seven
Which layer in the OSI model is responsible for the physical connections of the devices in the network?
Physical Layer
Which layer of the OSI model uses devices such as hubs. repeaters, modem devices, and physical cabling?
Physical Layer
Which layer of the OSI model is responsible for the error-free delivery of data to the receiving device or node?
Data Link layer
What layer of the OSI model uses devices such as bridge devices, wireless, or wired network cards?
Data Link Layer
Which layer of the OSI model is responsible for the transmission of data between hosts in different networks as well as routing of data packets.
Network Layer
What layer of the OSI model uses devices such as routers and some switches?
Network Layer
What layer of the OSI model provides services to the application layer and receives services from the network layer?
Transport Layer
What layer of the OSI model is responsible for the reliable delivery of data that it segments and reassembles in the correct order for it to be sent to the receiving devices?
Transport Layer
What layer of the OSI model is often called the heart of OSI?
Transport Layer
What layer of the OSI model is responsible for the connection establishment, session maintenance, and authentication?
Session Layer
What layer of the OSI model is responsible for translating data from the application layer into the format required to transmit the data over the network as well as encrypting the data for security?
Presentation Layer
What layer of the OSI model is responsible for network applications (like HTTP or FTP) and their production of data to be transferred over the internet?
Application Layer
What model is widely used throughout networking documentation and discussions?
OSI Model
What number layer of the OSI model involves you opening a web browser on your laptop and typing in www.wgu.edu into the search bar?
Layer 7 (Application Layer)
What number layer of the OSI model sends the search command to be encrypted and decrypted when received by the web browser?
Layer 6 (Presentation layer)
What number layer of the OSI model establishes connection between your laptop and WGU’s server and maintains it while you accomplish your tasks on the website?
Layer 5 (Session layer)
What number layer of the OSI model transfers the data and then is segmented and numbered to send the data across the network in sizes the network can handle and to reassemble it the correct order by the web server?
Layer 4 (Transport Layer)
What number layer of the OSI model receives the segments and transmits them across the networks as packets, adds the source and destination IP address to each individual data packet?
Layer 3 (Network Layer)
What layer of the OSI model receives the packets and adds physical addressing by adding sender and receiver MAC addresses to each packet, called a frame.
Layer 2 (Data Link Layer)
What layer number of the OSI model receives the frames and sends them from local media to the switches, routers, etc along the network path?
Layer 1 (Physical Layer)
How long does it take to travel from top to the bottom of the OSI model?
Microseconds
