Networks 2

Question 1

Port 20

Answer 1

FTP Data - TCP - (Action)

Question 2

Port 21

Answer 2

FTP Control - TCP - (Action)

Question 3

Port 22

Answer 3

SSH - TCP - (Action)

Question 4

Port 23

Answer 4

Telnet - TCP - (Action)

Question 5

Port 25

Answer 5

SMTP - TCP - (Service)

Question 6

Port 53

Answer 6

DNS - TCP / UDP - (Service)

Question 7

Port 68/67

Answer 7

DHCP - UDP - (Service)

Question 8

Port 69

Answer 8

TFTP - UDP - (Service)

Question 9

Port 80

Answer 9

HTTP - TCP - (Service)

Question 10

Port 123

Answer 10

NTP - UDP - (Service)

Question 11

Port 143

Answer 11

IMAP - TCP - (Service)

Question 12

Port 443

Answer 12

HTTPS - TCP - (Service)

Question 13

Port 445

Answer 13

Server Message Block - TCP - (Service)

Question 14

Port 161 - 162

Answer 14

Simple Network Management Protocol - UDP - (Service)

Question 15

Port 3389

Answer 15

RDP - TCP - (Action)

Question 16

Port 5060

Answer 16

SIP - TCP / UDP - (VoIP)

Question 17

Port 6970 - 6999

Answer 17

RTP - UDP - (VoIP and Other)

Question 18

Compare “workgroups” and “domains” as they apply to network administration.

Answer 18

Workgroups are small; unmanaged (<15)

Domains are large; centrally managed (>4 billion)

Question 19

How many bits are in an IPv4 address?

Answer 19

32

Question 20

How many bytes/octets are in an IPv4 address?

Answer 20

4

Question 21

How many bits are in an IPv6 address?

Answer 21

128

Question 22

How many bytes/octets are in an IPv6 address?

Answer 22

16

Question 23

What are the 2 portions of an IPv6 address?

Answer 23

Network ID (Network Routing Portion)

Interface ID (Host Portion)

Question 24

An IPv6 address is broken down into two portions. How do I use the MAC address to create one of those portions?

Answer 24

MAC = OUI /slice/ FF:FE /slice/ Interface Specific

Question 25

Break down the IP address classes and their IP addresses. (Only cite the first octet values)

Answer 25

A - 0 - 127
B - 128 - 191
C - 192 - 223
D - 224 - 239

Question 26

List the default subnet masks and CIDR notation for each IP address class.

Answer 26

A - 255.0.0.0 - /8
B - 255.255.0.0 - /16
C - 255.255.255.0 - /24

Question 27

List each of the three Private IP address classes and their associated IP addresses.

Answer 27

A - 10.x.x.x
B - 172.(16-31).x.x
C - 192.168.x.x

Question 28

List at least two “reserved” addresses. You cannot use Private IP addresses in your answer.

Answer 28

Network ID - …0
Broadcast - …255
Loopback - 127.x.x.x

Question 29

What IP addresses are associated with APIPA?

Answer 29

169.254.x.x

Question 30

What protocol header contains the TTL field?

Answer 30

IP

Question 31

What layer of the OSI model does IP appear on?

Answer 31

3

Question 32

What network device acts/uses IP?

Answer 32

Router

Question 33

Why is it important to have a TTL?

Answer 33

Garbage collection (if no packet life then Network gets bogged down by old packets)

Question 34

Sketch out the TCP 3-way handshake process used by all TCP protocols to initiate a session.

Answer 34

Client (Source) Server (Target)

                        Sin
                        --->

                    Sin-Ack