Module 4 v1
OSI Model v2
OSI Model v3
TCP/IP v4
TCP/IP v5
100

Fill in the word.
Blank cabling supports higher bandwidth than UTP for longer distances. Blank is immune to EMI and RFI, but costs more, requires more skill to install, and requires more safety precautions.

What is fiber-optic cabling

Fiber-optic cabling supports higher bandwidth than UTP for longer distances. Fiber is immune to EMI and RFI, but costs more, requires more skill to install, and requires more safety precautions.

This item references content from the following areas:


ITN

1.4.5 Fiber-Optic Cabling

100

Fill in the blank:
blank layer contains protocols used for process-to-process communications.

What is the Application Layer

The application layer is used by end-user software such as web browsers and email clients. It provides protocols that allow software to send and receive information and present meaningful data to users. A few examples of application layer protocols are the Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), Post Office Protocol (POP), Simple Mail Transfer Protocol (SMTP), and Domain Name System (DNS).

Ref 3.5.2

100

Fill in the blank:
The blank layer protocols describe methods for exchanging data frames between devices over a common media

What is the data link layer

The data link layer establishes and terminates a connection between two physically-connected nodes on a network. It breaks up packets into frames and sends them from source to destination. This layer is composed of two parts—Logical Link Control (LLC), which identifies network protocols, performs error checking and synchronizes frames, and Media Access Control (MAC) which uses MAC addresses to connect devices and define permissions to transmit and receive data.

Ref 3.5.2

100

This TCP/IP model layer Represents data to the user, plus encoding and dialog control.

-application

-transport

-internet

-network access

What is the application layer

The application layer is the highest abstraction layer of the TCP/IP model that provides the interfaces and protocols needed by the users. It combines the functionalities of the session layer, the presentation layer and the application layer of the OSI model. It facilitates the user to use the services of the network.

100

UDP and TCP belong to which layer of the TCP/IP protocol?

Application
Transport
Internet
Network Access

What is the transport layer

TCP and UDP are both transport layer protocols

200

What are two characteristics of fiber-optic cable? (Choose two.)

It is not affected by EMI or RFI.

Each pair of cables is wrapped in metallic foil.

It combines the technique of cancellation, shielding, and twisting to protect data.

It typically contains 4 pairs of fiber-optic wires.

It is more expensive than UTP cabling is.

What is
It is not affected by EMI or RFI
and
It is more expensive than UTP cabling is.

Fiber-optic cabling supports higher bandwidth than UTP for longer distances. Fiber is immune to EMI and RFI, but costs more, requires more skill to install, and requires more safety precautions.

4.5 Fiber-Optic Cabling

200

Fill in the blank:

The blank layer provides for common representation of the data transferred between application layer services.

What is the presentation layer

The presentation layer prepares data for the application layer. It defines how two devices should encode, encrypt, and compress data so it is received correctly on the other end. The presentation layer takes any data transmitted by the application layer and prepares it for transmission over the session layer.

Ref 3.2.5

200

Fill in the blank:
The blank layer protocols describe the mechanical, electrical, functional, and procedural means to activate, maintain, and de-activate physical connections for a bit transmission to and from a network device.

What is the physical layer protocol

The physical layer is responsible for the physical cable or wireless connection between network nodes. It defines the connector, the electrical cable or wireless technology connecting the devices, and is responsible for transmission of the raw data, which is simply a series of 0s and 1s, while taking care of bit rate control.

Ref 3.5.2

200

This TCP/IP protocol model, Supports communication between various devices across diverse networks.

What is the transport layer

The TCP/IP transport layer ensures that packets arrive in sequence and without error, by swapping acknowledgments of data reception, and retransmitting lost packets. This type of communication is known as end-to-end.


200

Which two protocols belong in the TCP/IP model application layer?

EIGRP
DNS
OSPF
ICMP
DHCP

What is DNS and DHCP

The DHCP and DNS are both application layer protocols

300

What is a primary role of the Physical layer in transmitting data on the network?

-create the signals that represent the bits in each frame on to the media

-provide physical addressing to the devices

-determine the path packets take through the network

-control data access to the media

What is
create the signals that represent the bits in each frame on to the media

The OSI physical layer provides the means to transport the bits that make up a frame across the network media. This layer accepts a complete frame from the data link layer and encodes it as a series of signals that are transmitted to the local media.

This item references content from the following areas:

ITN

1.4.1 Purpose of the Physical Layer

300

Fill in the blank:
The blank layer provides services to the presentation layer to organize its dialogue and to manage data exchange.


What is the session layer

The session layer creates communication channels, called sessions, between devices. It is responsible for opening sessions, ensuring they remain open and functional while data is being transferred, and closing them when communication ends. The session layer can also set checkpoints during a data transfer—if the session is interrupted, devices can resume data transfer from the last checkpoint.

300

Which OSI layer is responsible for breaking up data into segments?

1) Network layer

2) Transport layer

3) Presentation layer

4) Data link layer

What is the transport layer

The transport layer is responsible for taking data and breaking it up into smaller chunks. When data is transferred across a network, it is not transferred as one packet. To make transfers more efficient and faster, the transport layer breaks data into smaller segments.

300

This TCP/IP protocol Determines the best path through the network.

What is the internet layer

The internet layer, also known as the network layer, controls the flow and routing of traffic to ensure data is sent speedily and accurately. This layer is also responsible for reassembling the data packet at its destination.

300

Which protocol operates at the network access layer of the TCP/IP model?

HTTP
IP
DNS
ETHERNET

What is Ethernet

The ethernet is a network access layer protocol


400

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

-the magnetic field around the adjacent pairs of wire

-the use of braided wire to shield the adjacent wire pairs

-the reflection of the electrical wave back from the far end of the cable

-the collision caused by two nodes trying to use the media simultaneously

What is
Crosstalk is a type of noise, or interference that occurs when signal transmission on one wire interferes with another wire. When current flows through a wire a magnetic field is produced. The produced magnetic field will interface the signal carried in the adjacent wire.

This item references content from the following areas:

ITN

1.4.4 UTP Cabling

400

Fill in the blank:
blank layer defines services to segment, transfer, and reassemble the data for individual communications between the end devices.

What is the transport layer

The transport layer takes data transferred in the session layer and breaks it into “segments” on the transmitting end. It is responsible for reassembling the segments on the receiving end, turning it back into data that can be used by the session layer. The transport layer carries out flow control, sending data at a rate that matches the connection speed of the receiving device, and error control, checking if data was received incorrectly and if not, requesting it again.

Ref 3.5.2

400

Layer 2 of the OSI model is also known as:

1) Transport layer

2) Network layer

3) Data link layer

4) Physical layer

What is the data link layer

The data link layer, or layer 2, is the protocol layer that transfers data between nodes on a network segment across the physical layer, or what is commonly known as a host's physical address.

400

Which TCP/IP model layer Controls the hardware devices and media that make up the network. 

What is the network access layer

The network access layer is the lowest layer in the Internet reference model. This layer contains the protocols that the computer uses to deliver data to the other computers and devices that are attached to the network.

400

A device receives a data link frame with data and processes and removes the Ethernet information. What information would be the next to be processed by the receiving device?

IP at the internet layer
UDP at the internet layer
TCP at the transport layer 

What is IP at the internet layer

Data is de-encapsulated so the next layer to receive the data would be the internet layer

500

In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose two.)

-crosstalk

-bandwidth

-size of the network

-signal modulation technique

-electromagnetic interference

What is
crosstalk and electromagnetic interference

Copper media is widely used in network communications. However, copper media is limited by distance and signal interference. Data is transmitted on copper cables as electrical pulses. The electrical pulses are susceptible to interference from two sources:

Electromagnetic interference (EMI) or radio frequency interference (RFI) - EMI and RFI signals can distort and corrupt the data signals being carried by copper media.

Crosstalk - Crosstalk is a disturbance caused by the electric or magnetic fields of a signal on one wire interfering with the signal in an adjacent wire.

This item references content from the following areas:


ITN

1.4.3 Copper Cabling

500

Fill in the blank:
The blank layer provides services to exchange the individual pieces of data over the network between identified end devices.

What is the network layer

The network layer has two main functions. One is breaking up segments into network packets, and reassembling the packets on the receiving end. The other is routing packets by discovering the best path across a physical network. The network layer uses network addresses (typically Internet Protocol addresses) to route packets to a destination node.

Ref 3.5.2

500

In the OSI model, data compression takes place at the:

1) Presentation layer

2) Session layer

3) Network layer

4) Physical layer

 

What is the presentation layer is responsible for translation, encryption, and compression of data.


500

What is a protocol data unit (PDU)?

What is the combination of data from the next higher communications layer and control information.

In networking, a protocol data unit (PDU) is the basic unit of exchange between entities that communicate using a specified networking protocol. When working with a multilayer protocol stack, like the TCP/IP networking suite, use of the correct PDU is important when discussing protocol interactions.

500

Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)

File Transfer
Routing Protocols
Messaging
Internet Protocol

What is routing protocols, messaging, and internet protocol

The IP (internet protocol), ICMP (messaging), and routing protocols are services provided at the internet layer