IFSM 370: TELECOMMUNICATIONS IN IT CHAPTER 2.
INSIGHTFUL A+ QUESTIONS AND ANSWERS.
ATM
Asynchronous Transfer Mode for high-speed data transfer.
OSI Reference Model
Seven-layer model for network protocol design.
Service Access Point (SAP)
Interface between layers in the OSI model.
Layering Advantages
Independent layer updates without affecting others.
Application layer
Identifies communication partners and synchronizes communication.
Presentation layer
Handles data coding and conversion for readability.
Session layer
Manages communication sessions between applications.
Transport layer
Controls data flow and error checking during transmission.
Network layer
Responsible for routing and logical addressing.
Data link layer
Ensures reliable data transit across physical links.
Physical layer
Defines specifications for physical network connections.
FTP
File Transfer Protocol for transferring files.
SMTP
Simple Mail Transfer Protocol for email transmission.
TCP
Transmission Control Protocol, ensures reliable data delivery.
UDP
, User Datagram Protocol, allows faster, non-reliable transmissions.
IP
Internet Protocol, handles addressing and routing.
ARP
Address Resolution Protocol, maps IP addresses to MAC.
Data integrity
Protection against modification and destruction of data.
Data confidentiality
Prevents unauthorized disclosure of information.
Authentication
Verifies the identity of communication sources.
Access control services
Regulates user access to resources.
Encapsulation
Wrapping data with headers and trailers from layers.
Headers
Information added to data before transmission.
Trailers
Information added to data after transmission.
LLC sublayer
Manages communications over a single network link.
MAC sublayer
Manages access to the physical network medium.
TCP/IP model
Layered model for Internet communication protocols.
TCP
Transmission Control Protocol for reliable communication.
IP
Internet Protocol for addressing and routing data.
IETF
Internet Engineering Task Force, develops Internet standards.
INSIGHTFUL A+ QUESTIONS AND ANSWERS.
ATM
Asynchronous Transfer Mode for high-speed data transfer.
OSI Reference Model
Seven-layer model for network protocol design.
Service Access Point (SAP)
Interface between layers in the OSI model.
Layering Advantages
Independent layer updates without affecting others.
Application layer
Identifies communication partners and synchronizes communication.
Presentation layer
Handles data coding and conversion for readability.
Session layer
Manages communication sessions between applications.
Transport layer
Controls data flow and error checking during transmission.
Network layer
Responsible for routing and logical addressing.
Data link layer
Ensures reliable data transit across physical links.
Physical layer
Defines specifications for physical network connections.
FTP
File Transfer Protocol for transferring files.
SMTP
Simple Mail Transfer Protocol for email transmission.
TCP
Transmission Control Protocol, ensures reliable data delivery.
UDP
, User Datagram Protocol, allows faster, non-reliable transmissions.
IP
Internet Protocol, handles addressing and routing.
ARP
Address Resolution Protocol, maps IP addresses to MAC.
Data integrity
Protection against modification and destruction of data.
Data confidentiality
Prevents unauthorized disclosure of information.
Authentication
Verifies the identity of communication sources.
Access control services
Regulates user access to resources.
Encapsulation
Wrapping data with headers and trailers from layers.
Headers
Information added to data before transmission.
Trailers
Information added to data after transmission.
LLC sublayer
Manages communications over a single network link.
MAC sublayer
Manages access to the physical network medium.
TCP/IP model
Layered model for Internet communication protocols.
TCP
Transmission Control Protocol for reliable communication.
IP
Internet Protocol for addressing and routing data.
IETF
Internet Engineering Task Force, develops Internet standards.
