week 3 again

Question 1

What is API

Answer 1

API is a set of instructions that allows application layer to communicate with network

Question 2

What are sockets used for

Answer 2

Sockets are used for programmers to access TCP/IP in a manner like reading/writing a file

Question 3

Registered ports are accessible to

Answer 3

network users and processes that do not have special administrative privilege

Question 4

Dynamic/Private ports are accessible to

Answer 4

anyone

Question 5

What does kernel consist of

Answer 5

file, sockets, TCP, IP, Ethernet and device driver

Question 6

What is ARP

Answer 6

Obtains MAC of host by creating a table of mappings of MAC to IP

Question 7

How is ARP used

Answer 7

Static arp entries filled out manually using ARP utility

Question 8

What is meant by validating the packet and frame

Answer 8

Checking if destination address matches and receipt is error free

Question 9

What is Winsock

Answer 9

Winsock is a Windows API that allows developers to write network applications