1.3.6--15

-Network

At what OSI layer does a router operate to forward network messages? -Physical -Data Link -Session -Network -Transport

-Physical

At which layer of the OSI model do hubs operate? -Data Link -Layer 3 -Physical -Internet

-Routes messages between networks

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

-Integration of network functionality into the host operating system -Enabling communication between network clients and services

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

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

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

-Application ---------(-Application, -Presentation, -Session) -Transport -----------(-Transport) -Internet -------------(-Network) -Network Interface --(-Data Link) (Hardware) -----------(-Physical)

Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once. -Network Interface -------Presentation -Application --------------Data Link -Internet ------------------Application -Transport -----------------Session -Network -Transport

(Device or Function) ----(OSI Model Layer) -HTTP --------------------Application -ASCII --------------------Presentation -Session ID number -----Session -Port numbers -----------Transport -Router -------------------Network -Switch -------------------Data Link -Wireless access point ---Physical

Match the networking function or device on the left with the OSI model layer it is associated with on the right. -Application ----Session ID number -Presentation ---Wireless access point -Session --------Router -Transport ------Switch -Network -------Port numbers -Data Link ------ASCII -Physical -------HTTP

-LLC -MAC

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

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

Which of the following are functions of the MAC sublayer? (Select two.) -Defining a unique hardware address for each device on the network -Mapping hardware addresses to linklayer addresses -Creating routing tables based on MAC addresses -Letting devices on the network have access to the LAN

-Transport

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

-Network interface card -Switch

Which of the following devices operate at OSI model layer 2? (Select two.) -Hub -Repeater -Router -Network interface card -Switch -Firewall

-Movement of data across network cables

Which of the following functions are performed at the Physical layer of the OSI model? -Conversation identification -Enablement of network services -Movement of data across network cables -Provision of an environment in which to run network applications -Data translation

-Switches -Network interface cards (NICs) -Bridges

Which three of the following devices operate at the Data Link layer of the OSI model ? -Switches -Repeaters -Hubs -Network interface cards (NICs) -Routers -Bridges

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

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

-Data Link

Your company purchases a new bridge, which filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning? -Transport -Data Link -Presentation -Session