Unit 2 : Networks

Multiple Choice

__________are devices that are connected to a network. These can include computers, Servers, Printers, Routers, Switches, and other devices.

• Network

• Nodes

• Protocols

• Terminologies

Multiple Choice

A ________ is a set of rules and standards that govern how data is transmitted over a network.

• Network

• Nodes

• Protocol

• Terminologies

Multiple Choice

•A _______ is a collection of computers and devices that are connected together to enable communication and data exchange.

• Network

• Nodes

• Protocol

• Terminologies

Multiple Choice

•Computers, Servers, Printers, Routers, Switches are eamples on:

• Network

• Nodes

• Protocol

• Terminologies

Multiple Choice

•Computers, Servers, Printers, Routers, Switches are eamples on:

• Network

• Nodes

• Protocol

• Terminologies

Multiple Choice

Examples of ________ include TCP/IP, HTTP, and FTP.

• Network

• Nodes

• Protocols

• Topologies

Multiple Choice

•__________: These types of Networks give permission to take Network Capacity and Functionality on lease from the Provider. ________ include Wireless Communications, Data Carriers, etc.

• Topology

• Service Provider Networks

• IP Address

• Nodes

Multiple Choice

•___________is a unique numerical identifier that is assigned to every device on a network. _________ used to identify devices and enable communication between them.

• Topology

• Service Provider Networks

• IP Address

• Nodes

Multiple Choice

•Network ________ refers to the physical and logical arrangement of nodes on a network.

• Topology

• Service Provider Networks

• IP Address

• Nodes

Multiple Choice

The common network _________ include bus, star, ring, mesh, and tree.

• Topologies

• Service Provider Networks

• IP Addresses

• Nodes

Multiple Choice

A________ is a security device that is used to monitor and control incoming and outgoing network traffic

• Firewall

• DNS

• Service Provider Network

• Protocol

Multiple Choice

A__________is a protocol that is used to translate human-readable domain names (such as www.google.com) into IP addresses that computers can understand.

• Firewall

• DNS

• Service Provider Network

• TCP/IP

Multiple Choice

•A_________ is a physical device that is used to connect other physical devices on a network.

• Firewall

• DNS

• Service Provider Network

• Network device

Multiple Choice

_________ are used to protect networks from unauthorized access and other security threats

• Firewalls

• DNS

• Service Provider Networks

• Network devices

Multiple Choice

•__________used to connect computers, printers, laptops and other electronic devices to a network

• Firewalls

• DNS

• Service Provider Networks

• Network devices

Multiple Choice

Which one of the following is not feature of the network devices?

• Allow a greater number of nodes to be connected to the network

• Reduce and minimise the distance between the deviecs

• Localize traffic on the network.

• Can merge existing networks.

• Isolate network problems so that they can be diagnosed more easily.

Multiple Choice

Which one of the network devices is used as a central device.It is a simple devices that direct data packets to all devices connected to it.and regenerate and retime network signals

• HUB

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

Which one of the network devices is a relatively simple network device that amplifies the signal it receives in order to allow it to cover a longer distance?

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

They are really multi-port repeaters

• Hubs

• Routers

• Bridges

• Switchs

Multiple Select

Which of the following the Hub can not do? (May be more than one option)

• •direct data packets to all devices connected to the hub.

• regenerate and retime network signals

• filter network traffic

• •determine best path

Multiple Choice

•A______ enables networked computers and devices to talk to each other efficiently.

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

•A______ enables networked computers and devices to talk to each other efficiently.

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

Hubs and switchs can send and recieve data simultaneously

• True

• False

Multiple Choice

•________is allow communication between hosts on different networks and act as a gatway to other networks

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

•________It connects two segments of the same network.

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

•________is a networking device that connects multiple layers

• Hub

• Router

• Repeater

• Gateway

• Switch

Multiple Choice

_______has a small level of intellegance, it can open the message,check the IP address and direct the message packets tothe port on which the device with that IP address resides.

• Repeater

• Router

• Switch

• Modem

Multiple Choice

_______is a piece of network hardware that is used to convert digital signals

into analog signals, in order to transmit them over analog telephone

lines. When the signals arrive at the destination, another _______ will

convert the analog signals back to a digital format.

• Repeater

• Router

• Switch

• Modem

Multiple Choice

_______can read IP addresses and direct the messages to another network with different IP addresses to the orginating network.______ can build up adress table so that it knows where other devices are.

• Repeater

• Router

• Switch

• Modem

Multiple Choice

_______is in its simplest form. just like mains multi plug unit, there is no intellegence or circuitry in it

• Hub

• Router

• Switch

• Modem

Multiple Choice

The_____ is used to change data from a host device into a signal that

can be sent over a network.

• Bridge

• NIC

• Modem

• Hub

Multiple Choice

________ are Operates in both the PHYSICAL and the data link layer.

• Bridges

• NICs

• Modems

• Hubs

Multiple Choice

________ is used to connect hosts or network segments together.

• Bridge

• NIC

• Modem

• Hub

Multiple Choice

________changes signals that are received

into data that host devices can understand. Each______ has a unique

identifier called a MAC address.

• Bridge

• NIC

• Modem

• Hub

Multiple Choice

________can be used to divide larger networks into smaller ones, by

sitting between network devices and regulating the flow of traffic.

• Bridge

• NIC

• Modem

• Hub

Multiple Choice

Which one of the following statements is wrong?

• OSI stands for Operating Systems Internet.

• OSI was developed by ISO – ‘International Organization for

  Standardization’, in the year 1984.

• OSI is a 7-layer architecture with each layer having specific functionality

  to perform.

• 7 layers work collaboratively to transmit the

  data from one person to another across the globe.

Multiple Choice

The lowest layer of the OSI reference model

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

The second layer of the OSI reference model

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

Hub, Repeater, Modem, and Cables are

_________ devices.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

The ____________ contains information in the form of bits.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

It is responsible for the actual physical connection between the

devices.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

________is responsible for the node-to-node delivery of the

message.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

Switch & Bridge are _________ devices.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

Hub, Repeater, Modem, and Cables are

_________ devices.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

When a packet arrives in a network, it is the responsibility of the ________

to transmit it to the Host using its MAC address.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

The main function of ___________ is to make sure data transfer is

error-free from one node to another, over the physical layer.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

The ____________ works for the transmission of data from one host

to the other located in different networks.takes care of packet routing i.e. selection of the shortest path to

transmit the packet, from the number of routes available

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

____________adds Source and Destination port numbers in its header and

forwards the segmented data to the Network Layer.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

The____________ also provides the acknowledgment of the

successful data transmission and re-transmits the data if an error is

found.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Multiple Choice

_________________: is a signal that a device sends to indicate that data

has been received successfully.

• Packet

• Message

• Acknowledgment

• DLL

Multiple Select

Which of the following are functions of the session layer? (You may choose more than one)

• Session establishment, maintenance, and termination

• Acknowledgment

• Synchronization

• Dialog Controller

Multiple Choice

___________ establishment, maintenance, and termination: The layer allows

the two processes to establish, use and terminate a connection.

• Session Layer

• Transport Layer

• Network Layer

• Data Link Layer

Multiple Choice

The main function of ____________ is to make sure data transfer is

error-free from one node to another, over the physical layer.

• Session Layer

• Transport Layer

• Network Layer

• Data Link Layer

Multiple Choice

__________allows a process to add checkpoints that are

considered synchronization points in the data. These synchronization

points help to identify the error so that the data is re-synchronized

properly, and ends of the messages are not cut prematurely and data

loss is avoided.

• Session Layer

• Transport Layer

• Network Layer

• Data Link Layer

Multiple Choice

______________allows a process to add checkpoints that are

considered synchronization points in the data. These synchronization

points help to identify the error so that the data is re-synchronized

properly, and ends of the messages are not cut prematurely and data

loss is avoided.

• Synchronization

• Packet

• Acknowledgment

• Dialog Controller

Multiple Choice

The _________ allows two systems to start

communication with each other in half-duplex or full-duplex.

• Session Layer

• Transport Layer

• Network Layer

• Data Link Layer

Multiple Select

Which of the following are the functions of Presentation Layer? (You may choose more than one)

• Translation

• Encryption/ Decryption

• Compression

• Synchronization

Multiple Choice

__________translates the data into

another form or code.

• Presentation Layer

• Session Layer

• Transport Layer

• Network Layer

Multiple Choice

_________________Reduces the number of bits that need to be transmitted

on the network.

• Presentation Layer

• Session Layer

• Transport Layer

• Network Layer

Multiple Choice

____________Reduces the number of bits that need to be transmitted

on the network.

• Synchronization

• Acknowledgment

• Compression

• Encryption/ Decryption

Multiple Choice

The encrypted data is known as the _________

• ciphertext

• plain text.

Multiple Choice

The decrypted data is known as _____________

• ciphertext

• plain text.

Multiple Choice

______________serves as a window for the application services to access the network

and for displaying the received information to the user.

• Transport Layer

• Session Layer

• Presentation Layer

• Application Layer

Multiple Choice

Which layer is replonsible about Translation: For example, ASCII to EBCDIC?

• Transport Layer

• Session Layer

• Presentation Layer

• Application Layer

Multiple Select

The main functions of application layer are : (You may select more than one function)

• Network Virtual Terminal

• Translation

• FTAM- File transfer access and management

• Mail Services

Multiple Choice

FTAM- File transfer access and management means______

• It allows a user to log on to a remote

  host

• Reduces the number of bits that need to be transmitted

  on the network.

• allows a user to access file in a remote host, retrieve files in remote

  host and manage or

  control files from a remote computer.

• Provide email service.

Multiple Choice

Network Virtual Terminal means______

• It allows a user to log on to a remote

  host

• Reduces the number of bits that need to be transmitted

  on the network.

• allows a user to access file in a remote host, retrieve files in remote

  host and manage or

  control files from a remote computer.

• Provide email service.

Multiple Choice

Which one of the following statements is incorrect?

• The basic difference between TCP

  and IP is in the transmission of data.

• IP finds the destination of the mail and TCP has the

  work to send and receive the mail.

• TCP and IP are same protocols of Computer Networks.

• UDP is another protocol, which does not require IP to communicate

  with another computer.

Multiple Choice

TCP and IP are different protocols of Computer Networks.

• True

• False