TOPIC 3: OSI Quiz

Removed

In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______. a. rearranged b. added c. removed d. modified

Presentation

In the OSI model, encryption and decryption are functions of the ________ layer. a. transport b. application c. session d. presentation

process-to-process message delivery

In the OSI model, what is the main function of the transport layer? a. process-to-process message delivery b. synchronization c. updating and maintenance of routing tables d. node-to-node delivery

Session

In the OSI model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's _______ layer. a. presentation b. session c. physical d. transport

transport

The_________ layer is responsible for the delivery of a message from one process to another. Select one: a. network b. physical c. transport d. none of the choices

seven

The OSI model consists of _______ layers.

network

The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver. Select one: a. none of the choices b. physical c. data link d. network

Session

The ______ layer establishes, maintains, and synchronizes the interactions between communicating devices. Select one: a. network b. session c. transport d. physical

data link

The ______ layer is responsible for moving frames from one hop (node) to the next. Select one: a. none of the choices b. transport c. data link d. physical

network

The ______ layer is responsible for the source-to-destination delivery of a packet across multiple network links. Select one: a. physical b. data link c. network d. transport

Physical

The _______ layer changes bits into electromagnetic signals. Select one: a. Transport b. None of the choices c. Physical d. Data link

Physical

The _______ layer coordinates the functions required to transmit a bit stream over a physical medium. Select one: a. network b. transport c. physical d. data link

presentation

The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format. Select one: a. data link b. transport c. presentation d. network

data link

The _______ layer is responsible for delivering data units from one station to the next without errors. Select one: a. network b. physical c. data link d. transport

Physical

The _______ layer is the layer closest to the transmission medium. Select one: a. Physical b. Data link c. Transport d. Network

Transport

The _______ layer lies between the network layer and the application layer. Select one: a. Physical b. Data link c. Transport d. None of the choices

transport

The _______ layer links the network support layers and the user support layers. Select one: a. session b. transport c. network d. data link

OSI

The _______ model shows how the network functions of a computer ought to be organized. Select one: a. ISO b. CCITT c. OSI d. ANSI

Transport

The ________ layer is responsible for the process-to-process delivery of the entire message. Select one: a. transport b. data link c. network d. physical

Application

The _________ layer enables the users to access the network. Select one: a. transport b. application c. physical d. data link

bits

The physical layer is concerned with the movement of _______ over the physical medium. a. bits b. protocols c. programs d. dialogs

network

The physical, data link, and network layers are the ______ support layers. a. user b. network c. neither user nor network d. both user and network

Transport Layer

Which OSI layer is responsible for the reliability of the data sent between hosts? Select one: a. Presentation layer b. Transport layer c. Application layer d. Network layer

Layer 2

Which layer of the OSI model is responsible for converting the packet to an electrical signal that will be placed on the wire? Select one: a. Layer 1 b. Layer 3 c. Layer 2 d. Layer 4

1. Compression 2. Converting the message to a format that is understood by the destination 3. Encryption

Which of the following functions can be performed at layer 6 of the OSI model? (Select all that apply.) Select one or more: a. Routing of the message b. Compression c. Converting the message to a format that is understood by the destination d. Encryption

Data transmission

Which of the following is NOT a layer in the OSI model? Select one: a. Physical b. Data transmission c. Transport d. Network

TCP

Which of the following protocols are transport-layer protocols? (Choose two.) Select one or more: a. IPX b. SPX c. IP d. TCP

192.168.3.200

Which of the following represents a layer-3 address? a. 192.168.3.200 b. 00-02-3F-6B-25-13 c. COMPUTER1 d. www.myvirtuallearning.tk

SMTP

Which of the following represents an application-layer protocol? Select one: a. SMTP b. IP c. TCP d. SPX

Standards were needed to allow any two systems to communicate

Why was the OSI model developed? Select one: a. Manufacturers disliked the TCP/IP protocol suite. b. The rate of data transfer was increasing exponentially c. Standards were needed to allow any two systems to communicate d. None of the choices