please answer the following
1) The difference between the Internet and www
2) What is meant by IP addresses, MAC addresses, packets and protocols
3) How to find the MAC and IP address of a device
4) How email is sent and received over the Internet
5)Types of Network-LAN,WAN,MAN.
6)Define the following:
i) Hub/Switch
ii)Router
iii)Server
iv)Client
v)Modem
vi) Web application
vii) Topology
viii) Handshaking process
Answers
Answer:
1)
The Internet is a global network of networks while the Web, also referred formally as World Wide Web (www) is collection of information which is accessed via the Internet. Another way to look at this difference is; the Internet is infrastructure while the Web is service on top of that infrastructure.
2)When sending a packet to a machine on the public Internet, the packet is sent to the MAC address of the router interface that is the default gateway. IP addresses are used to figure out the MAC address to send to using ARP. ARP Basics. ARP stands for Address Resolution Protocol.
3)Tap the “Wi-Fi” option under Wireless & networks, tap the menu button, and then tap “Advanced” to open the Advanced Wi-Fi screen. You'll find the IP address and MAC address displayed at the bottom of this page
4)The SMTP protocol is used to both send and receive email messages over the Internet. When a message is sent, the email client sends the message to the SMTP server. ... Once the IP address has been resolved, the SMTP server connects with the remote SMTP server and the mail is delivered to this server for handling.
5)
A MAN (metropolitan area network) is a larger network that usually spans several buildings in the same city or town. The IUB network is an example of a MAN. ... A WAN connects several LANs, and may be limited to an enterprise (a corporation or an organization) or accessible to the public.
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Answer:
1) The world wide web, or web for short, are the pages you see when you're at a device and you're online. But the internet is the network of connected computers that the web works on, as well as what emails and files travel across. The world wide web contains the things you see on the roads like houses and shops.
2) The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address. ARP was defined in 1982 by RFC 826, which is Internet Standard STD 37.
3)Android Phones/Tablets
1)Locate and tap the Settings app.
2)Scroll to find, then tap About Device (on some phones it will say About Phone).
3)Tap Status.
4)The MAC address is listed under WiFi Address.