Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
Layer 1 |
Physical |
|
|
Layer 2 |
Data Link |
|
|
Layer 3 |
Network |
|
|
Layer 4 |
Transport |
|
|
Layer 5 |
Session |
|
|
Layer 6 |
Presentation |
|
|
Layer 7 |
Application |
|
|
The layer that provides interfaces for applications to access the network, such as file sharing, message handling, and database access. |
Application - Layer 7 |
|
|
PDU at the application layer is called _____ |
data |
|
|
data that is divided into units suitable for each layer |
PDU - protocol data unit |
|
|
HTTP, FTP, SMB/CIFS, TFTP, and SMTP are some of the protocols found in which layer? |
Application - Layer 7 |
|
|
Layer that handles data formatting and translation |
Presentation - Layer 6 |
|
|
Layer that handles protocol conversion, data encryption and decryption, data compression and decompression, data representation incompatibilities between OS's, and graphics commands. |
Presentation - Layer 6 |
|
|
Layer that permits two computers to hold ongoing communications across a network |
Session - Layer 5 |
|
|
layer that handles name lookup, user logon and logoff. DNS and other name resolution protocols work in part at this layer. |
Session - Layer 5 |
|
|
Layer that manages data transfer from one application to another across a network. |
Transport - Layer 4 |
|
|
In order to meet a network technology's maximum transmission unit (MTU) the transport layer (layer 4) breaks long data streams into chunks called _____ |
segments |
|
|
The Transport layer's (4) PDU |
segment |
|
|
Components working at the Transport layer (layer 4) |
TCP and UDP |
|
|
Transport Layer header include: |
-Source and destination port numbers. -Sequence and acknowledgement numbers (TCP), used to ensure all data sent is received. -Window Size |
|
|
Layer that handles logical addressing, translates logical network addresses (IP's) into physical addresses (MAC's), and performs best path selection and routing. |
Network - Layer 3 |
|
|
PDU at the Network Layer (3) |
packet |
|
|
Software components that work on layer 3 the network layer. |
IP, ARP, and ICMP |
|
|
Devices that work on the network layer (3) |
Routers, firewalls, and some remote access devices, such as VPN servers. |
|
|
Layer that works with frames and defines how computers access the network medium, also called "media access control" |
Data Link - Layer 2 |
|
|
Software component operating at the data link layer (2)
|
NIC driver |
|
|
hardware components operating at the data link layer(2) |
NIC's and switches |
|
|
Layer that converts bits into signals for outgoing messages and signals into bits for incoming messages |
Physical - Layer 1 |
|
|
components working at the physical layer (1) |
cables, connectors, repeaters, and hubs. |
|
|
IEEE 802.3 |
Ethernet LAN from 10 Mbps to 10 Gbps |
|
|
IEEE 802.11 |
Wireless networks |
|
|
Data Link sub-layer that handles error free delivery and controls the flow of frames between sender and receiver across a network |
Logical Link Control (LLC) sub-layer |
|
|
Data Link sub-layer that handles accessing network media and mapping between logical and physical network addresses for NIC's |
Media Access Control (MAC) sub-layer |
