OSI

Question 1

What is used to enable the efficient transmission of data among hosts on a network?

Answer 1

OSI model

Question 2

The OSI model was developed by what organization?

Answer 2

International Organization for Standardization

Question 3

The OSI model consists of what seven layers?

Answer 3

Application
Presentation
Session
Transport
Network
Data link
Physical

Question 4

HTTP, FTP, Telnet, NTP, DHCP and PING are found in what three layers of the OSI model?

Answer 4

Application, Presentation, Session

Question 5

TCP/UDP are found in what layer of the OSI model?

Answer 5

Transport

Question 6

IP, ARP, ICMP and IGMP are found in what layer of the OSI model?

Answer 6

Network

Question 7

Ethernet is found in what two layers of the OSI model?

Answer 7

Data Link and Physical

Question 8

What does OSI stand for?

Answer 8

Open System Interconnection

Question 9

What model consists of a seven-layer architecture that organizes the sending of data from hosts across a network?

Answer 9

OSI model

Question 10

Who developed the OSI model?

Answer 10

International Standards Organization (ISO)

Question 11

How many layers does the OSI model have?

Answer 11

Seven

Question 12

Which layer in the OSI model is responsible for the physical connections of the devices in the network?

Answer 12

Physical Layer

Question 13

Which layer of the OSI model uses devices such as hubs. repeaters, modem devices, and physical cabling?

Answer 13

Physical Layer

Question 14

Which layer of the OSI model is responsible for the error-free delivery of data to the receiving device or node?

Answer 14

Data Link layer

Question 15

What layer of the OSI model uses devices such as bridge devices, wireless, or wired network cards?

Answer 15

Data Link Layer

Question 16

Which layer of the OSI model is responsible for the transmission of data between hosts in different networks as well as routing of data packets.

Answer 16

Network Layer

Question 17

What layer of the OSI model uses devices such as routers and some switches?

Answer 17

Network Layer

Question 18

What layer of the OSI model provides services to the application layer and receives services from the network layer?

Answer 18

Transport Layer

Question 19

What layer of the OSI model is responsible for the reliable delivery of data that it segments and reassembles in the correct order for it to be sent to the receiving devices?

Answer 19

Transport Layer

Question 20

What layer of the OSI model is often called the heart of OSI?

Answer 20

Transport Layer

Question 21

What layer of the OSI model is responsible for the connection establishment, session maintenance, and authentication?

Answer 21

Session Layer

Question 22

What layer of the OSI model is responsible for translating data from the application layer into the format required to transmit the data over the network as well as encrypting the data for security?

Answer 22

Presentation Layer

Question 23

What layer of the OSI model is responsible for network applications (like HTTP or FTP) and their production of data to be transferred over the internet?

Answer 23

Application Layer

Question 24

What model is widely used throughout networking documentation and discussions?

Answer 24

OSI Model

Question 25

What number layer of the OSI model involves you opening a web browser on your laptop and typing in www.wgu.edu into the search bar?

Answer 25

Layer 7 (Application Layer)

Question 26

What number layer of the OSI model sends the search command to be encrypted and decrypted when received by the web browser?

Answer 26

Layer 6 (Presentation layer)

Question 27

What number layer of the OSI model establishes connection between your laptop and WGU’s server and maintains it while you accomplish your tasks on the website?

Answer 27

Layer 5 (Session layer)

Question 28

What number layer of the OSI model transfers the data and then is segmented and numbered to send the data across the network in sizes the network can handle and to reassemble it the correct order by the web server?

Answer 28

Layer 4 (Transport Layer)

Question 29

What number layer of the OSI model receives the segments and transmits them across the networks as packets, adds the source and destination IP address to each individual data packet?

Answer 29

Layer 3 (Network Layer)

Question 30

What layer of the OSI model receives the packets and adds physical addressing by adding sender and receiver MAC addresses to each packet, called a frame.

Answer 30

Layer 2 (Data Link Layer)

Question 31

What layer number of the OSI model receives the frames and sends them from local media to the switches, routers, etc along the network path?

Answer 31

Layer 1 (Physical Layer)

Question 32

How long does it take to travel from top to the bottom of the OSI model?

Answer 32

Microseconds