Hex, Binary, ASCII, Unicode

Let’s Talk Hex, Binary, Ascii,

Unicode

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Question Sets From Class

Convert the Following to Base-10

0x21

Multiple Choice

Convert the following to Base-10

0x21

• 31

• 32

• 33

• 34

Convert the Following to Base-10

Convert the Following to Base-10

0x15

Multiple Choice

Convert the following to Base-10

0x15

• 21

• 22

• 23

• 24

Convert the Following to Base-10

0x33

Multiple Choice

Convert the following to Base-10:

0x33

• 50

• 51

• 52

• 53

Convert the Following Binary to Base-10

0100 0011

(This is a single 8-bit

number)

Multiple Choice

Convert the following Binary to Base-10:

0100 0011

• 65

• 66

• 67

• 68

Convert the Following Binary to Base-10

0100 0011

Convert the Following Binary to Base-10

1011

(This is a single 4-bit

number)

Multiple Choice

Convert the following Binary to Base-10:

1011

• 10

• 11

• 12

• 13

Please Open:

Unicode Chart

Ascii Chart

How many bits make up a Hexadecimal Character?

Multiple Choice

How many bits make up a Hexadecimal Character?

• 1

• 4

• 8

• 12

How many bits make up a
Hexadecimal Character?

4 Bits

0000 = 0

1111 = F (15)

How many bits make up an Ascii character?

Multiple Choice

How many bits make up an Ascii character?

• 1

• 4

• 8

• 12

How many bits make up an Ascii character?

Every ASCII character is represented by 2 HEX characters.

8 bits or 1 byte

How many HEX Characters make up a unicode (UTF-8)

character?

Multiple Choice

How many HEX Characters make up a unicode (UTF-8) character?

• 1

• 4

• 8

• 12

How many HEX Characters make up a unicode (UTF-8)

character?

Every unicode (UTF-8) character is represented by

4 Hex Characters

How many bytes is this?

Multiple Choice

How many Bytes make up 4 Hex characters?

• 1

• 2

• 4

• 8

How many HEX Characters make up a unicode (UTF-8)

character?

Every unicode (UTF-8) character is represented by

4 Hex Characters

How many bytes is this?

16 bits or 2 bytes

How many bytes in 7 ASCII characters?

Multiple Choice

How many Bytes are in 7 ASCII characters?

• 1

• 4

• 7

• 8

How many bytes in 7 ASCII characters?

Every ASCII character is 2 HEX characters.

(8 bits/1 byte)

7 bytes

How many bytes in 7 Unicode characters?

Multiple Choice

How many Bytes are in 7 Unicode characters?

• 7

• 8

• 14

• 16

How many bytes in 7 Unicode characters?

Every Unicode Character is 4 Hex Characters

4 Hex Characters is 2 Bytes. (16 bits)

14 bytes

non-repudiation

-Video Surveillance

-Digital Signature

-Actual Signature

(Witnessed by a notary: even better!)

True/False

A MAC Address is assigned to a computer when it is

powered on.

Multiple Choice

A MAC address is assigned to a computer when it is powered on

• True

• False

True/False

A MAC(Media Access Control) Address is a unique identifier
assigned to a network interface controller(NIC). Every

device that has access to the internet has a MAC address.

DIFFERENT THAN IP ADDRESS!!

A user tries to access a document, but is presented with an

error message, ‘Access Denied!’

Which one applies:

Authorization

Authentication

Multiple Choice

A user tries to access a document, but is presented with an error message, ‘Access Denied!’

Which one applies:

• Authorization

• Authentication

• Accounting

A user tries to access a document, but is presented with an

error message, ‘Access Denied!’

Which one applies:

Authorization

Fill in the Blank

A Microwave or Cordless Phone (Not Cell Phone) will

sometime cause wifi signal ___________________

Fill in the Blank

A Microwave or Cordless Phone (Not Cell Phone) will

sometime cause signal interference

DOCSIS:

What type of network technology are we talking about here?

Multiple Choice

What type of networking technology are we referring to with DOCSIS

• DNS Server

• Cable Internet

• DSL

• Fiber

DOCSIS:

What type of network technology are we talking about here?

Data Over Cable Services Interface Specification

This is going to be Cable Internet

DOCSIS:

What kind of Connector would you expect to connect to the

WAN port of a Cable Internet Modem?

Multiple Choice

What connector would you use to connect to the WAN port of a Cable Internet Modem?

• RJ-11

• RJ-45

• Coaxial

• Fiber

Coaxial Cable:

What kind of Connector would you expect to connect to the

WAN port of a Cable Internet Modem?

DOCSIS:

What speed is going to be the most common for DOCSIS

(Cable) Internet

A.) 10 Mbps

B.) 100 Mbps

C.) 1 Gbps

D.) 10Gbps

Multiple Choice

What speed is going to be the most common for DOCSIS (cable) internet?

• 10 Mbps

• 100 Mbps

• 1 Gbps

• 10 Gbps

DOCSIS:

What speed is going to be the most common for DOCSIS

(Cable) Internet

A.) 10 Mbps

B.) 100 Mbps

C.) 1 Gbps

D.) 10Gbps

100 Mbps is the most common with Cable. 1 Gbps is
possible, but not common here. Remember, Cable TV
also uses the same wire!

Fiber

Quick Note:

Fiber Optic Internet will most likely be 1 Gbps

Fiber:

Which of the following is the most common type of Fiber?

A.) FTTH

B.) FTTC

Multiple Choice

Which is the most common type of Fiber?

• FTTH

• FTTC

Fiber:

Which of the following is the most common type of Fiber?

A.) FTTH

B.) FTTC

FTTC: (Fiber Optic to Curb) –Cheapest/Serves Neighborhoods

FTTH: (Fiber Optic to Home) -Expensive: Dedicated Line to a
Home that otherwise wouldn’t have it.

About how many Terabytes are in a Petabyte:

A.) 100

B.) 1,000

C.) 1,000,000

D.) 100,000,000

Multiple Choice

About how many Terabytes are in a Petabyte?

• 100

• 1,000

• 1,000,000

• 14

How many Terabytes are in a Petabyte:

A.) 100

B.) 1,000 (1024)

C.) 1,000,000

D.) 100,000,000

What Type of HyperVisor is VirtualBox or VMWare Workstation?

A.) Type I

B.) Type II

Multiple Choice

What Type of HyperVisor is VirtualBox or VMWare Workstation?

• Type 1

• Type 2

What Type of HyperVisor is VirtualBox or VMWare Workstation?

A.) Type I

B.) Type II

Type I: vCenter/eSXI: Provides Virtual Machines direct access
to the underlying hardware

Type II: Relies on the underlying operating system to provide
virtual resources for the VM.

Which of the following describes all properties of an

object:

A.) Attributes
B.) Functions
C.) Methods
D.) Vectors

Multiple Choice

Which of the following describes all properties of an object:

• Attributes

• Functions

• Methods

• Vectors

Which of the following describes all properties of an

object:

A.) Attributes

Click Here

Put this link in your notes

In Fact:

If you are a test taker:

You should take the time to completely read

4.1, 4.2, and 4.3

HERE

Which of the following programming constructs will ensure that a function is executed a specific number of times:

A.) If … else
B.) for i in range(11)
C.) while …
D.) if …

Multiple Choice

Which of the following programming constructs will ensure that a function is executed a specific number of times:

• If....else

• for i in range(11)

• while....

• If.....

Which of the following programming constructs will
ensure that a function is executed a specific number of
times:

A.) If … else
B.) for i in range(11)
C.) while …
D.) if …

a = 0;
do {
print(“The value of the variable is” + a);
a = a + 1;
} while( a < 20 );

What will this program print?

Multiple Choice

a = 0;

do {

print(“The value of the variable is” + a);

a = a + 1;

} while( a < 20 );

What will this program print?

• The numbers 1-20

• The numbers 0-20

• The numbers 0-19

• The numbers 1-19

• Nothing.

a = 0;
do {
print(“The value of the variable is” + a);
a = a + 1;
} while( a < 20 );

What will this program print?

0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19

Once the variable 'a' is equal to 20, the program will stop and it will not print the number 20.

Which of the following has moving parts?

A.) SSD
B.) RAM
C.) M.2
D.) HDD

Multiple Choice

Which of the following has moving parts?

• SSD

• RAM

• M.2

• HDD

Which of the following has moving parts?

A.) SSD
B.) RAM
C.) M.2
D.) HDD

​SSD, RAM, and M.2 all use flash memory and have no moving parts.

HDDs having spinning disks

What is the primary purpose of an operating system?

A.) Provide users access to applications
B.) Provide applications access to hardware
C.) Locate the first boot device
D.) Provide users with internet access

Multiple Choice

What is the primary purpose of an Operating System?

• Provide users access to applications

• Provide applications access to hardware

• Locate the first bootable device

• Provide users with internet access

What is the primary purpose of an operating system?

A.) Provide users access to applications
B.) Provide applications access to hardware
C.) Locate the first boot device
D.) Provide users with internet access

When running many programs at once on a computer, which component will be the most limiting factor?

A.) CPU
B.) RAM
C.) NIC
D.) Bus Speed

Multiple Choice

When running many programs at once on a computer, which component will be the most limiting factor?

• CPU

• NIC

• RAM

• Bus Speed

When running many programs at once on a computer, which component will be the most limiting factor?

A.) CPU
B.) RAM
C.) NIC
D.) Bus Speed

​RAM handles all of the current processes that are running on a computer. The more programs that are running, the more RAM needs to be utilized