Which of the following statements is true:

• DNS is at the same level of abstraction as the IP layer
• The IP layer is a higher level than the TCP layer. 
• The TCP layer is independent of  the IP layer
• The TCP layer is below the DNS layer

What is the number 45 as a binary number?

• 10011111
• 00001100
• 00101101
• 10101010

What is Abstraction?

• The use of computers to solve problems.
• Representing 'real world' problems in a computer using variables and symbols and removing unnecessary elements
• Breaking down a large problem into smaller sub-problems.
• Identifying the steps involved in solving a problem.

What does Protocol mean?

• Security
• Rules
• Orders
• Services

Which of these is NOT part of the TCP header?

• Packet Number
• Sender IP Address
• Size of Packet
• Name of File

This is used to resolve host names to IP addresses

• IP address
• subnet mask
• default gateway
• DNS server

How many bits are in an IPV6 address?

• 32
• 64
• 128
• 256

Which of the following statements is true:

• TCP is a protocol that ensures that internet traffic is routed in the most efficient manner possible.  
• TCP ensures that all packets are received in the correct order.  
• The TCP protocol takes into consideration that packets can be lost. 
• TCP resends packets multiple times to ensure that they are received by the requester.  

The binary number 01000001 represents the letter "A" in ASCII, which of the following represents the letter "B"

• 01000011 
• 01000010 
• 00100001 
• 01000001 

The HTTP protocol: 

• The GET request results in all of the page data being displayed. 
• Data sent by the server is sent in one file, broken up into various packets.
• Data sent by the server is sent in several files broken up into packets.  
• Data sent by the server arrives at the client in the order it is sent.