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CodeHS 8.10

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Same key used for encryption and decryption.

a)

symmetric

b)

asymmetric

2.

Different key used for encryption and decryption.

a)

symmetric

b)

asymmetric

3.

Alice requests _______ key from Bob. Alice encrypts with this and sends message to Bob. Bob decrypts with _______ key. This is called _________.

a)

private; public; Private Key Encryption

b)

public; private; Private Key Encryption

c)

public; private; Public Key Encryption

d)

public; private; Symmetric

4.

What is the key used today?

a)

2^40

b)

2^128

c)

2^256

d)

2^512

5.

How many different digits are used in the Hexadecimal number system?

a)

2

b)

10

c)

12

d)

16

6.

How many different values can be represented using 4 bits?

a)

4

b)

8

c)

16

d)

32

7.

What is the answer to this run length encoding HaaaaaaHaaaaaa?

a)

Ha6Ha6

b)

H1a6H1a6

8.

_________ is time it takes from bit to get from sender to receiver.

a)

banwidth

b)

bit rate

c)

latency

9.

Do we want low or high latency?

a)

low

b)

high

10.

What version of IP addresses are we currently in?

a)

IPV4

b)

IPV6

11.

93.184.216.34 represents how many bits for each number and how many total?

a)

4 bits per number; total of 8 bits

b)

8 bits per number; total of 32 bits

c)

32 bits for the number; 32 bits for the total

12.

IPV 6 is a _________ bit version.

a)

32

b)

64

c)

128

13.

With IPV4, how many addresses are available?

a)

1 billion

b)

32 billioni

c)

4 billion

14.

IPV6 is made up of what?

a)

8, 4 digit hexadecimal values

b)

8, 4 digit binary values

c)

32 bits

15.

The IETF is an open community of engineers, designers, vendors, and researchers that are concerned with evolution of internet. What does it stand for?

a)

International Engineering Task Force

b)

Internet Engineering Task Force

c)

Internet Evironment Task Force