C Annex Test 2

Front 1

Client/Server Network

Back 1

Servers run the network services, and clients must request permission for delivery of network resources

Front 2

Peer-to-Peer (PTP) Network

Back 2

There are no dedicated servers, each computer acts as both a client and a server

Front 3

Client/Server Model Advantages

Back 3

1. Centralized security

2. Dedicated servers

3. Easy accessibility and configuration control

4. Easy to backup

Front 4

Client/Server Model Disadvantages

Back 4

1. Dependency upon Administration

2. Complicated Set Up and Maintenance

3. Expensive Servers

Front 5

Peer-to-Peer (PTP) Model Advantages

Back 5

1. Small networks

2. Inexpensive

3. Easy Setup

4. Low Maintenance

Front 6

Peer-to-Peer (PTP) Model Disadvantages

Back 6

1. Scattered Data

2. Weak Security

3. No Central Administration or Control

4. User training

Front 7

Hyper Text Transfer Protocol (HTTP)

Back 7

Contains all of the text, graphics, and animations that will display on a client computer when the web page is downloaded. Resides on web servers and contains the information required to render web pages on client computers.

Front 8

HTTP port

Back 8

Port 80

Front 9

File Transfer Protocol (FTP)

Back 9

An unsecure protocol. There is no encryption of this protocol, and the traffic can be easily monitored.

Front 10

FTP port

Back 10

Ports 20 and 21

Front 11

Simple Mail Transfer Protocol (SMTP)

Back 11

Used to transfer emails from client computers to email servers and to transfer mail between two email servers.

Front 12

SMTP port

Back 12

Port 25

Front 13

Post Office Protocol 3 (POP3)

Back 13

Used to pull messages from an email server

Front 14

POP3 port

Back 14

Port 110

Front 15

Internet Message Access Protocol (IMAP)

Back 15

The third message delivery type from the server to client. More advanced than POP3

Front 16

IMAP port

Back 16

Port 143

Front 17

Exchange/Outlook client Messaging Application Programming Interface (MAPI) Protocol

Back 17

The fourth email delivery protocol, is a Microsoft proprietary protocol used between Microsoft Outlook and Exchange

Front 18

MAPI port

Back 18

Port 135, then the server and outlook client dynamically assign another port number

Front 19

Domain Naming Service (DNS)

Back 19

Resolves IP addresses to fully qualified domain names

Front 20

DNS port

Back 20

Port 53

Front 21

Dynamic Host Control Protocol (DHCP)

Back 21

Allows client computers to automatically pull their IP address configuration from a centrally managed server

Front 22

DHCP port

Back 22

Ports 67 and 68

Front 23

Server Message Block (SMB) Protocol

Back 23

Is used by clients to access shared resources

Front 24

SMB port

Back 24

Port 445

Front 25

Telecomunications Network (TelNet)

Back 25

Is software that allows you to remotely access network systems, allows access to the CLI in Cisco IOS. The client connection is called a Virtual Terminal (VTY) session.

Front 26

TelNet port

Back 26

Port 23

Front 27

User Datagram Protocol (UDP)

Back 27

Is a very low overhead protocol that works well with higher bandwidth applications like voice and video because of the volume of data being sent across the network. Provides fro a simple, connectionless delivery method.

Front 28

Transmission Control Protocol (TCP)

Back 28

Is a connection oriented protocol that incurs over twice the overhead of the other protocol in order to gain additional functionality.

Front 29

UDP provides

Back 29

1. Unreliable delivery

2. No error recovery

3. No Flow control

4. No congestion control

5. No ordered delivery

6. No connection establishment

Front 30

TCP provides

Back 30

1. Reliable delivery

2. Error recovery

3. Flow control

4. Congestion control

5. Ordered delivery

6. Connection establishment

Front 31

The command used to view ports being used on a PC

Back 31

netstat

Front 32

Well known ports

Back 32

Ports 0-1023, are reserved for commonly used services and applications

Front 33

Registered ports

Back 33

Ports 1024-49151, are primarily ports assigned to applications that a user might decide to install

Front 34

Dynamic, or private ports

Back 34

Ports 49152-65535, are usually assigned dynamically to client applications as they initiate connections

Front 35

How ports are used to establish a Transmission Control Protocol (TCP)

Back 35

The client computer will use a unique and random port number as the source port (a dynamic port) and request a web page from a server with the destination of a well-known port. The server will establish a connection with its source port and the destination port being the same random port that originated the request for a web page.

Front 36

Ordered Deliver in relation to the functions of TCP

Back 36

Provides reliable delivery.

Front 37

Step one of the Three-Way Handshake

Back 37

Computer A sends SYNCH, and Computer B receives SYNCH.

Front 38

Step two of the Three-Way Handshake

Back 38

Computer B sends ACK and SYNCH, and Computer A ACK received.

Front 39

Step three of the Three-Way Handshake

Back 39

Computer A Established, and sends SYNCH.

Front 40

Reliable Delivery in relation to the functions of TCP

Back 40

This connection establishment enables it in the three step process known as the TCP three-way handshake.

Front 41

Port 20

Back 41

FTP Data, TCP

Front 42

Port 21

Back 42

FTP Control, TCP

Front 43

Port 22

Back 43

SSH, TCP

Front 44

Port 23

Back 44

TelNet, TCP

Front 45

Port 25

Back 45

SMTP, TCP

Front 46

Port 53

Back 46

DNS, UDP/TCP

Front 47

Port 67/68

Back 47

DHCP, UDP

Front 48

Port 69

Back 48

TFTP, UDP

Front 49

Port 80

Back 49

HTTP, TCP

Front 50

Port 110

Back 50

POP3, TCP

Front 51

Port 161

Back 51

SNMP, UDP

Front 52

Port 443

Back 52

SSL, TCP

Front 53

Port 16,384-32,767

Back 53

RTP-Based Voice and Video, UDP

Front 54

Window Size

Back 54

Is the amount of data that a source can transmit before an acknowledgment must be received

Front 55

How TCP dynamically changes to overcome network congestion

Back 55

The Window Size will flex to fit the quality of the connection and the bandwidth available

Front 56

Flow Control

Back 56

Together with Window Size, accounts for congestion control

Front 57

TCP header size

Back 57

20 Bytes long

Front 58

UDP header size

Back 58

8 Bytes long

Front 59

Intermediary devices that operate at the Network Layer of the OSI Model

Back 59

Routers and layer-3 switches

Front 60

The Three Basic Characteristics of Internet Protocol Version 4 (IPv4)

Back 60

1. Connectionless

2. A best effort

3. Media independent protocol

Front 61

Actions a router can take with a packet

Back 61

1. Forward the packet out the proper interface

2. Send the packet out to its default route if one is programmed

3. Drop the packet

Front 62

Maximum Transmission Unit (MTU)

Back 62

Limits the size of the PDU, determined by the data link layer

Front 63

Valid IPv4 addresses

Back 63

1. Binary: 11001000.00010100.00010000.00010001

2. Decimal: 200.20.16.17

3. Minimum value for IP 0.0.0.0

4. Maximum value for IP 255.255.255.255

Front 64

Routing

Back 64

The process of moving packets through the network

Front 65

Default Gateway

Back 65

IP address used by a host to forward IP packets that have destination addresses outside of the local network. Address of the router interface connected to the same local network as the source host. If the computer does not know the destination, it routes the packet through this.

Front 66

Routing Table

Back 66

Contains the destination networks, the metric, and the address of the next hop.

Front 67

Static Routing

Back 67

Are a way of manually configuring the routing table in routers. Programming of routers by a network administrator with all of the routes that it needs to know about in order to do its job.

Front 68

Dynamic Routing

Back 68

Allow routers to learn about other networks from other routers automatically. The routers share their networks with other routers to automatically build and complete topology of the network, and automatically adjust to traffic changes.

Front 69

Time-to-Live (TTL)

Back 69

Describes the maximum number of hops the packet can take before it is considered "lost" or undeliverable. This keeps the internet from becoming cluttered by lost packets and creating such issues as routing loops.

Front 70

Metric

Back 70

Is a calculated number that is used to determine which route to a destination network is best in the event that a router knows about multiple paths to the same network

Front 71

Network Address

Back 71

The first available IP address in the network range. Used to represent the network as a whole. Also known as the Net ID.

Front 72

Broadcast Address

Back 72

The last available IP address in the network range. Used to send traffic to all of the devices in the network.

Front 73

Host Addresses

Back 73

The rest of the IP addresses that fall between the network and broadcast ID. Usable IP addresses that you can assign to devices within your network.

Front 74

Class A

Back 74

1.X.X.X - 126.X.X.X

Front 75

Class B

Back 75

128.X.X.X - 191.X.X.X

Front 76

Class C

Back 76

191.X.X.X - 223.X.X.X

Front 77

Class D

Back 77

225.X.X.X - 239.X.X.X

Front 78

Private Address

Back 78

Must rely on Network Address Translation to be routable on the internet. Do not need to be globally unique. IP addresses that are designated for use within a private network.

Front 79

Public Address

Back 79

Addresses designated for use in networks that are accessible on the internet. This means that routers will route these outside of your internal network.

Front 80

Unicast

Back 80

Point to point communications from one host to another over the network. Most of the IP traffic you will encounter. "one-to-one"

Front 81

Broadcast

Back 81

If a computer or network device sends IP traffic to this address, all of the computers and network devices on that IP network will receive the traffic. "one-to-many"

Front 82

Multicast

Back 82

When a host sends out a data stream that multiple hosts can receive. "one-to-many"

Front 83

Ping

Back 83

Used to test whether or not a path through the network exists to a destination network or computer

Front 84

Network Address Translation (NAT)

Back 84

Changes the private space addresses in the IPv4 packet header to a public space address. Regardless of how many devices you have on your private LAN, the internet sees all of your traffic as the (1) public IP address your ISP provided.

Front 85

Valid Internet Protocol Version 6 (IPv6) addresses

Back 85

8 fields of 4 hexadecimal numbers per field