Chapter 1 Flashcards
(25 cards)
What does the OSI model stand for?
Open Systems Interconnection model
How many layers are in the OSI model?
Seven
Which OSI layer is responsible for routing and logical addressing?
Network layer (Layer 3)
Which OSI layer handles MAC addresses and framing?
Data Link layer (Layer 2)
Which layer of the OSI model is responsible for end-to-end connections?
Transport layer (Layer 4)
Which layer of the OSI model manages sessions between applications?
Session layer (Layer 5)
What protocol automatically assigns IP addresses?
DHCP
What port does HTTPS use?
443
What port does HTTP use?
80
What protocol translates domain names to IP addresses?
DNS
What type of traffic is sent to all devices on a subnet?
Broadcast
What type of traffic is sent to a specific device?
Unicast
What type of traffic is sent to a group of devices?
Multicast
What protocol is used for web traffic over an encrypted connection?
HTTPS
What is the function of the Application layer in OSI?
Provides network services to end-user applications
What does TCP stand for?
Transmission Control Protocol
What does IP stand for?
Internet Protocol
What is the main difference between TCP and UDP?
TCP is connection-oriented; UDP is connectionless
Which OSI layer is responsible for encryption and compression?
Presentation layer (Layer 6)
What is the function of the Physical layer?
Transmits raw bitstream over physical medium
What protocol uses port 53?
DNS
What protocol uses port 25?
SMTP
Which OSI layer would a switch primarily operate at?
Data Link layer (Layer 2)
Which OSI layer would a router primarily operate at?
Network layer (Layer 3)
