Osi Model

Front 1

If you insert a Network Interface Card (NIC) but fail to seat it deeply enough in the PCs circuit board, your PC will experience network problems at which layer?

Back 1

Physical

Front 2

Repeaters and hubs operate at which level?

Back 2

Physical

Front 3

The physical layer is concerned with the movement of _____ over the physical medium?

Back 3

bits

Front 4

What best describes the function of the physical layer?

Back 4

It sends data through the medium and relies on hardware such as: a NIC

Front 5

At which layer are data blocks packaged into individual frames?

Back 5

Data Link

Front 6

The IEEE expanded the OSI Model by separating which layer into two sub layers?

Back 6

Data Link

Front 7

Bits are packaged into fames at this layer?

Back 7

Data Link

Front 8

The data link layer is only able to do what with errors?

Back 8

Detect errors

Front 9

What are the sublayers of the data link layer?

Back 9

Logical link control (LLC) & Media access control (MAC)

Front 10

The Network layer passes the data blocks, with their addressing identifications, to which layer?

Back 10

Data link

Front 11

What device operates at the Data Link layer of the OSI model?

Back 11

switches

Front 12

What protocal maps a logical address to a MAC address?

Back 12

ARP

Front 13

The Network layer adds addressing info to the data it receives from which layer?

Back 13

transport layer

Front 14

The Network uses physical addresses to route data to destination hosts. T or F?

Back 14

False: The network uses logical address to route data to destination hosts

Front 15

IP is implemented at which OSI layer?

Back 15

Network

Front 16

Which layer translates between the Physical MAC and logical addressing?

Back 16

Network layer

Front 17

Bridges operate at which layer of the OSI model?

Back 17

Network

Front 18

Which OSI layer routes data by the best path to specific network destinations?

Back 18

Network layer

Front 19

What protocols operate at the network layer in the OSI model?

Back 19

IP, ARP, RIP, OSPF

Front 20

What layer of the OSI model provides connectivity and path selection between 2 end systems where routing occurs?

Back 20

Network

Front 21

What operates at the network layer of the OSI model?

Back 21

Routers

Front 22

What layer is sometimes compared to a telephone operator?

Back 22

Session

Front 23

One of the Session layer's functions is to synchronize the dialog between the 2 nodes. T or F?

Back 23

TRUE

Front 24

Which layer establishes, maintains, & terminates communication between apps located on different devices?

Back 24

Session, Layer 5

Front 25

The Presentation layer compresses or encrypts data and passes the request onto which layer?

Back 25

Session, Layer 5

Front 26

The primary function of protocols at the session layer is to translate network address into their physical counterparts and decide how to route data from the sender to the receiver. T or F?

Back 26

False

Front 27

What are some of the responsibilities the session layer provides?

Back 27

Communication link, & duration of session

Front 28

What IP headers decide when the packet should be discarded?

Back 28

Time To Live (TTL)

Front 29

Transport layer services break arbitrarily long packets into?

Back 29

Maximum Transmission Units (MTU's)

Front 30

What is the process by which the Transport Layer service of the sending node divides the sending node's data, and assigns numbers to each piece so that the data can be reassembled in the correct order by the receiving node's Transport later service?

Back 30

Segmentation

Front 31

The Transport later passes the data blocks, one at a time, to which layer?

Back 31

Network

Front 32

What protocol does the transport layer use?

Back 32

TCP/UDP

Front 33

Flow control takes place at which layer?

Back 33

Transport

Front 34

Error detection and error correction takes place at which layer?

Back 34

Transport

Front 35

Packets are found at this layer?

Back 35

Transport (although they are found at the network layer as well)

*Transport layer deals with segments, however, they also deal with packets when the network layer passes it the transport layer.

Front 36

Which layer is responsible for packet sequencing, acknowledgements, & requests for re-transmission?

Back 36

Transport, layer 4

Front 37

The network layer adds addressing info to the data it receives from which layer?

Back 37

Transport

Front 38

In the OSI model, what is the main function of the transport layer?

Back 38

Node to node delivery

Front 39

OSI layer responsible for error checking frames & adding MAC addresses to its tables?

Back 39

Transport