ITS Examlet - Section 3 Network Protocols and Services

ape together strong

Class A Public Range

1 - 126

Class A Private Range

10.x.x.x

Class A Default Subnet Mask

255.0.0.0

Class B Public Range

128 - 191

Class B Private Range

172.16.x.x

Class B Default Subnet Mask

255.255.0.0

Class C Public Range

192 - 223

Class C Private Range

192.168.x.x

Class C Default Subnet Mask

255.255.255.0

Class D Public Range

224

What is Class D (224) used for?

Multicast

What is the range for loopback?

127.0.0.1 - 127.255.255.255

What class does the following IP address belong to:

133.0.0.0

Class B Public

What class does the following IP address belong to:

244.0.0.0

Multicast

What class does the following IP address belong to:

200.0.0.0

Class C Public

What class does the following IP address belong to:

63.0.0.0

Class A Public

What class does the following IP address belong to:

172.16.11.1

Class B Private

Every IP address is made up of a ___ ID and a ___ ID

Network, Host

Identify the Network ID and Host ID of the following IP Address:

IP: 172.16.11.1

Subnet Mask: 255.255.0.0

Network ID: 172.16

Host ID: 11.1

Identify the Network ID and Host ID of the following IP Address:

IP: 10.5.5.25

Subnet Mask: 255.255.255.0

Network ID: 10.5.5

Host ID: 25

What is NAT/PAT

Network Address Translation/Port Address Translation

It masks internal IP addresses (private/public)

How many bits make up an IPv6 Address?

128 bits (Only 1 set of :: made up of 8 - 16bit blocks)

0:0:0:0:0:0:0:1 OR ::1

IPv6 Loopback Address

TIP: Count the octets and make sure there are 8 sections

FE80:

APIPA address

FECO

Site Local Address

What is the protocol that allows IPv4 to IPv6 tunneling (encapsulates IPv6 packets within IPv4 packets)

Teredo Tunneling Protocol

What is another word for Router Static Route?

Default route/gateway

Who sets the Router Static Route?

The Administrator

What provides fault-tolerance and auto updates like GPS?

Router Dynamic Routing

What is RIP and what does it use?

Router Information Protocol - uses hop count

DHCP

Dynamic Host Configuration Protocol - automatically assigns IP addresses

What does Ipconfig display?

Client IP information

Reservations and Exclusions are specific to which kind of IP address?

Static IP Addresses

169.254.x.x

APIPA - device was unable to receive an IP address from the DHCP server

What 2 options must be selected to get a DHCP server working?

• Select obtain IP address automatically

• Select obtain DNS server automatically

What is DNS and what does it do?

Domain Name Service - Resolves FQDN to IP addresses

What does a DNS Host file do?

Stores all DNS records

A - Record

Domain Name to IP address

A

Host Record

AAAA

IPv6 host record

MX

Email record

CNAME

Alias record

PTR

The reverse IP address to the Domain Name

What does the bolded part of this domain represent?

mail.abc.org

host computer/server

What does the bolded part of this domain represent?

mail.abc.org

domain name

What does the bolded part of this domain represent?

mail.abc.org

TLD (Top Level Domain)

What OSI level do the following devices belong to:

FTP, HTTP, HTTPS, POP3, SMTP, IMAP​, Computer

Layer 7 - Application

What OSI level do the following devices belong to:

Compression, encryption

Layer 6 - Presentation

What layer of the OSI model do the following devices belong to:

Logon/logoff, NetBIOS, Negotiation

Layer 5 - Session

What layer of the OSI model do the following devices belong to:

TCP, UDP

Layer 4 - Transport

What layer of the OSI model do the following devices belong to:

IP, ICMP, ARP, RIP, IPX​​​, Router

Layer 3 - Network

What layer of the OSI model do the following devices belong to:

Ethernet, MAC, Frames, CRC​  NIC, Switch, Bridge, WAPs

Layer 2 - Data Link

What layer of the OSI model do the following devices belong to:

100BaseT, 1000BaseT​​, Hubs, RJ45, Repeater

Layer 1 - Physical

What is the connection-based protocol that guarantees delivery?

TCP (Transmission Control Protocol)

Which protocol is a connection-less protocol that uses best attempt delivery?

UDP (User Datagram Protocol)

Which protocol converts IP addresses to MAC addresses?

ARP (Address Resolution Protocol)

Port 20/21

FTP (File Transfer Protocol)

Port 22

SSH (Secure Shell)

Port 23

Telnet

Port 25

SMTP (Simple Mail Transfer Protocol)

Port 53

DNS (Domain Name Service)

Port 67/68

DHCP (Dynamic Host Configuration Protocol)

Port 80

HTTP (Hypertext Transfer Protocol)

Port 110

POP3

Port 143

IMAP (Internet Message Access Protocol)

Port 161

SNMP (Simple Network Management Protocol)

Port 443

HTTPS (Hypertext Transfer Protocol Secure)

Port 3389

RDP (Remote Desktop Protocol)

What port does SMTP use?

Port 25

What port does FTP use?

Port 21

What port does HTTPS use?

Port 443

What is the connectionless, message-based protocol with best-effort service?

UDP

What is the connection-oriented protocol with guaranteed service?

TCP

Which protocol resolves IP addresses to MAC addresses?

ARP

What is the Loopback IP address range?

127.0.0.0 - 127.255.255.255

What is the Private Network address range?

192.168.0.0 - 192.168.255.255

What is the Multicast address range?

224.0.0.0 - 239.255.255.255

Which class does the following IP address belong to?

IP: 133.234.23.2

Class B

Which class does the following IP address belong to?

IP: 244.100.20.3

Class D

Which class does the following IP address belong to?

IP: 201.111.22.3

Class C

Which class does the following IP address belong to?

IP: 64.123.12.1

Class A

What network allows controlled access for specific business or educational purposes?

Extranet

Which network allows access only to users within an organization?

Intranet

Which network type is a system of interconnected networks?

Internet

Name the topology: Each computer is connected by a single cable

Ring

Name the topology: Each workstation acts as a repeaterr

Ring

Name the topology: Each computer is connected to every other computer

Mesh

Name the topology: There is a central connectivity device

Star

Name the topology: The number of connections equals the total number of computers minus one

Ring

Name the topology: Each node is connected to exactly two other nodes

Ring

Frequency range: 5.0Ghz

Data rate: 54 Mbps

802.11a

Frequency range: 2.4Ghz

Data rate: 11Mbps

802.11b

Frequency range: 2.4Ghz

Data rate: 54Mbps

802.11g

Frequency range: 2.4Ghz / 5.0Ghz

Data rate: 65 - 600 Mbps

802.11n

SSL VPN

allows a remote user to connect to a private network from anywhere on the Internet

Site-to-Site VPN

securely connects two portions of a private network or two private networks

Layer 2 Tunneling Protocol

creates an unencrypted connection between two network devices

The wireless adapter has an IP address configured ______?

a) Manually

b) through DHCP

c) through APIPA

through DHCP

The Ethernet adapter has an IP address configured _______

a) manually

b) through DHCP

c) through APIPA

through APIPA

True or False: 0.0.0.0.0.0.0.1 is the Loopback address for IPv6

True