1-Which of the following extensions point to an executable string of code?

1. 	A.	.bat
   	B.	.exe
   	C.	.docx
   	D.	None of the above

   2-which is following is true about DIMM technologies?

   	A.	DDR2 uses 184 pins
   	B.	DDR3 is backward compatible with DDR2
   	C.	SDRAM runs synchronized with the system clock
   	D.	the S in SDRAM stands for static 3-Which of the following is true about DIMM slots?   A. color coding is used to identify the channel   B. DDR2 and DDR3 support triple channels   C. DDR only supports a single channel   D. DDR3 DIMM allows access to four memory chips simultaneously on each DIMM

2. 4-Which type of expansion slot uses a retention mechanism to help stabilize a heavy card?

   	A.	ISA
   	B.	PCI
   	C.	AGP
   	D.	MGA 5-what

   would you install a video card in to get the best performance?

   	A.	AGP
   	B.	PCI
   	C.	ISA
   	D.	PCI-e