Choose the best answer.

1		How many layers are in the Open System Interconnection (OSI) model?
			A)	4
			B)	5
			C)	6
			D)	7
2		What is the hard-coded, unique identifying 48-bit number on a NIC called?
			A)	ARPANET
			B)	IP
			C)	MAC
			D)	HUB
3		All networks transmit data into a container "chunk" called what?
			A)	bit
			B)	file
			C)	folder
			D)	frame
4		Which of the following is the correct sequence of items in a frame?
			A)	source MAC address, destination MAC address, data, CRC
			B)	destination MAC address, source MAC address, data, CRC
			C)	source MAC address, destination MAC address, CRC, data
			D)	destination MAC address, source MAC address, CRC, data
5		What does CRC stand for in computer networking terms?
			A)	cyclic redundancy check
			B)	cross reference check
			C)	computer referral check
			D)	cyclic referral confirmation
6		What is the correct sequence of the OSI model?
			A)	application, physical, session, transport, network, data link, presentation
			B)	application, presentation, session, data link, network, transport, physical
			C)	application, physical, transport, session, network, data link, presentation
			D)	application, presentation, session, transport, network, data link, physical
7		What type of software handles the process of differentiating between various types of connections on a PC?
			A)	application software
			B)	network layer
			C)	operating system
			D)	session software
8		Which layer of the OSI model provides services to programs that users will see?
			A)	application layer
			B)	physical layer
			C)	program layer
			D)	transport layer
9		What device enables one large network to be broken up into many smaller networks?
			A)	broadcast
			B)	hub
			C)	packet
			D)	router
10		What device connects incoming data to all other connections?
			A)	data link
			B)	hub
			C)	router
			D)	sneakernet