1.3 Network Protocols and Layers Flashcards
What is an IP address?
IP address is a unique address assigned to each device in a network.
What is the difference between IPv4 and IPv6 addressing?
In IPv4, each device is assigned a 32-bit address. Whereas in IPv6, each device is assigned a 128-bit address.
What is static IP addressing?
IP addresses assigned by a network administrator, which remain unused when the device is not in use is static IP addressing.
What is dynamic IP addressing?
IP addresses assigned by DHCP, which can be reused when the device is not in use is dynamic IP addressing.
What are the contents of a data packet?
Source, destination, packet sequence, data and error checking.
List few languages used to create and update web pages.
HTML, XML and CSS
What is https?
A protocol that is a secured form of http. It is used in banking websites.
What are cascaded style sheets (CSS) used for?
CSS is used to edit the appearance of the HTML components such as buttons, text boxes, etc.
List some protocols used for email communication.
SMTP, POP3 and IMAP.
What are the different layers of TCP/IP suite of protocols?
Application layer
Transport layer
Internet layer
Link layer
What is the function of an application layer?
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.
What is the function of a transport layer?
Segmentation, sending acknowledgements ,requesting retransmission in case of missed packets determining the communication protocol, size of packets and data speed.
What is the function of an Internet layer?
Identifies sender’s and receiver’s addresses. Routes the data packet from sender to receiver.
What is the function of a link layer?
Error detection, hardware addressing, media access control and defining physical layer standards.
What is the significance of adding information at each layer of TCP/IP stack?
This information will be used by the receiver to process the data packets and retrieve the information correctly.