OSI, TCP/IP Flashcards
ISO-OSI layers 1,2,3 together called
1) network support layers
2) user support layers
network support layers
ISO-OSI layers 5,6,7 together called
1) network support layers
2) user support layers
user support layers.
they allow interoperability among unrelated software systems
________ensures end-to-end reliable data transmission
1) Data link layer
2) Network Layer
3) Transport layer
ransport layer
Entities in the same layer on different computers are called _______ entities
1) peer
2) equivalent
peer
OSI interface data unit (IDU) consists of
1) protocol data unit (PDU)
2) interface control information (ICI)
3) both
both
________ layer defines the direction of transmission between two devices: simplex, half-duplex etc
1) Physical layer
2) Data link layer
3) Network Layer
Physical layer
________ layer defines the network topology star, mesh etc.
1) Physical layer
2) Data link layer
3) Network Layer
Physical layer
____ is responsible for node-to-node delivery
1) Physical layer
2) Data link layer
3) Network Layer
Data link layer
____ is responsible for source-to destination delivery
1) Physical layer
2) Data link layer
3) Network Layer
4) Transport layer
Network Layer
______ ensures that messages are delivered error-free, in sequence, and
with no losses or duplications
1) Physical layer
2) Data link layer
3) Network Layer
4) Transport layer
Transport layer
_______ can be either connectionless or connection-oriented.
1) Physical layer
2) Data link layer
3) Network Layer
4) Transport layer
Transport layer
Error control is performed in
1) Physical layer
2) Data link layer
3) Network Layer
4) Transport layer
2 and 4
Data link layer - across a link
Transport layer - end to end
_______ is the network dialog controller
1) Network Layer
2) Transport layer
3) Session layer
4) Presentation layer
Session layer
________ allows a process to add checkpoints (synchronization points) into a stream of data.
1) Network Layer
2) Transport layer
3) Session layer
4) Presentation layer
Session layer
______ allows the communication between two processes to take place either in half-duplex or full-duplex
??
Session layer
(dialog control)
_________is concerned with the syntax and semantics of the information
exchanged between two systems.
1) Transport layer
2) Session layer
3) Presentation layer
4) Application Layer
Presentation layer
____ allows encryption, decryption and compression
1) Transport layer
2) Session layer
3) Presentation layer
4) Application Layer
Presentation layer
no headers or trailers are added at this layer
1) Transport layer
2) Session layer
3) Presentation layer
4) Application Layer
Application Layer
______ allows FTAM
1) Transport layer
2) Session layer
3) Presentation layer
4) Application Layer
Application Layer
File transfer, access, and management (FTAM)
The TCP/IP protocol suite
maps to a four-layer conceptual model known as the _______ model
1) DAPRA
2) DARPA
DARPA
named after the U.S. government agency that initially developed TCP/IP.
TCP four layers are
Application,
Transport,
Network or Internet
and __
1) Physical
2) Data link or network interface
Data link or network interface
________ resolves the network layer address to a link layer address such as a hardware address.
1) TCP
2) ARP
3) ICMP
4) IGMP
Address Resolution Protocol (ARP)
_____ reports errors and other information to help you diagnose unsuccessful packet delivery.
1) TCP
2) ARP
3) ICMP
4) IGMP
Internet Control Message Protocol (ICMP)
______ manages IP multicast groups.
1) TCP
2) ARP
3) ICMP
4) IGMP
Internet Group Management Protocol (IGMP)
