1.3 Network Protocols and Layers Flashcards

1
Q

What is an IP address?

A

IP address is a unique address assigned to each device in a network.

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2
Q

What is the difference between IPv4 and IPv6 addressing?

A

In IPv4, each device is assigned a 32-bit address. Whereas in IPv6, each device is assigned a 128-bit address.

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3
Q

What is static IP addressing?

A

IP addresses assigned by a network administrator, which remain unused when the device is not in use is static IP addressing.

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4
Q

What is dynamic IP addressing?

A

IP addresses assigned by DHCP, which can be reused when the device is not in use is dynamic IP addressing.

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5
Q

What are the contents of a data packet?

A

Source, destination, packet sequence, data and error checking.

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6
Q

List few languages used to create and update web pages.

A

HTML, XML and CSS

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7
Q

What is https?

A

A protocol that is a secured form of http. It is used in banking websites.

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8
Q

What are cascaded style sheets (CSS) used for?

A

CSS is used to edit the appearance of the HTML components such as buttons, text boxes, etc.

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9
Q

List some protocols used for email communication.

A

SMTP, POP3 and IMAP.

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10
Q

What are the different layers of TCP/IP suite of protocols?

A

Application layer
Transport layer
Internet layer
Link layer

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11
Q

What is the function of an application layer?

A

This layer is responsible for ensuring that the data supplied by the sender from his application can be viewed at the receiver’s end using his application.

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12
Q

What is the function of a transport layer?

A

Segmentation, sending acknowledgements ,requesting retransmission in case of missed packets determining the communication protocol, size of packets and data speed.

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13
Q

What is the function of an Internet layer?

A

Identifies sender’s and receiver’s addresses. Routes the data packet from sender to receiver.

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14
Q

What is the function of a link layer?

A

Error detection, hardware addressing, media access control and defining physical layer standards.

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15
Q

What is the significance of adding information at each layer of TCP/IP stack?

A

This information will be used by the receiver to process the data packets and retrieve the information correctly.

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16
Q

What is encapsulation?

A

Encapsulation is the process of adding information to data in each layer of TCP/IP stack