1.3.6 Practice Questions ISO

Which OSI model layer is responsible for guaranteeing reliable message delivery? Session Application Transport Data Link

Transport

Which of the following functions are performed at the Physical layer of the OSI model? Moving data across network cables. Data translation Conversation identification Enabling network services Provisioning environments where you can run network applications

Moving data across network cables.

HTTP

Application Layer

Which of the following tasks is associated with the Session layer? Acknowledgement coordination Transmission synchronization Host ID number assignment Connection establishment

Connection establishment

Packets

Network Layer

Internet TCP/IP Layer

Network OSI Layer

Router

Network layer layer

In the OSI model, what is the primary function of the Network layer? Transmit data frames Allows applications to establish, use and end a connection. Routes messages between networks. Ensures that packets are delivered with no loss or duplication.

Routes messages between networks.

Which of the following are included as part of Data Link layer specifications?(Select two.) Controlling how messages are propagated through the network. Synchronizing individual bits as they are transmitted through the network. Identifying physical network devices. Composing electrical signals as they pass through the transmission medium.

Controlling how messages are propagated through the network. Identifying physical network devices.

What is the basic purpose of the OSI Physical layer? Coordinates rules for managing network servers. Coordinates rules for routing packets. Defines basic physical structures, such as disks. Coordinates rules for transmitting bits.

Coordinates rules for transmitting bits.

Frames

Data Link Layer

Network Access TCP/IP Layer

Data Link OSI Layer

Switch

Data Link layer

In the OSI model, which of the following functions are performed at the Application layer?(Select all that apply.) Enabling communication between network clients and services Conversation identification Integrating network functionality into the host operating system Data translation

Enabling communication between network clients and services Integrating network functionality into the host operating system

Which of the following functions are performed by the OSI Transport layer?(Select three.) Consistent data formatting between dissimilar systems End-to-end flow control Data segmentation and reassembly Control media access, logical topology, and device identification Format packets for delivery through the media Reliable message delivery Path identification and selection

End-to-end flow control Data segmentation and reassembly Reliable message delivery

The Data Link Layer of the OSI model is comprised of two sublayers. What are they?(Select two.) SAN DLC LAT LLC MAC

LLC MAC

Which of the following are functions of the MAC sublayer? Letting devices on the network have access to the LAN Defining a unique hardware address for each device on the network Creating routing tables based on MAC addresses Mapping hardware addresses to link layer addresses

Letting devices on the network have access to the LAN Defining a unique hardware address for each device on the network

Bits

Physical Layer

Modem

Physical Layer

Application TCP/IP Layer

Presentation OSI Layer Application Session

ASCII

Presentation layer

Session ID number

Session layer

In the OSI model, which of the following functions are performed at the Presentation layer?(Select two.) Specify data format (such as file formats) Provide network services Maintain separate client connections Handle general network access, flow control, and error recovery Transmits data frames Encrypt and compress data

Specify data format (such as file formats) Encrypt and compress data

Segments

Transport Layer

Host-to-Host TCP/IP Layer

Transport OSI Layer

Port numbers

Transport layer