CompTIA N + Exam: N10-007fac.ksu.edu.sa/sites/default/files/images/16209/chapter...Exam: N10-007...

fac.ksu.edu.sa/wdahbour

CompTIA N +

Exam: N10-007

Chapter- 1

Networks and Their Basic Components

1

Eng. Walid Mahmoud Dahbour

King Saud University

Certified Professional Trainer (CPT)-(TTT)-(TOT)

CISCO Academy Instructor

Microsoft Academy Instructor

Cyber Security Trainer

MTA- MOS Trainer CompTIA Network+ Trainer


Chapter Topics

Objectives

• What is the purpose of a network?

• What are some examples of network components?

• How are networks defined by geography?

• How are networks defined by topology?

• How are networks defined by resource location?

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Defining a Network

• A (computer) network is an interconnection of two or more computing devices.

• It can serve a variety of purposes including:

- File sharing between two computers

- Video chatting across different parts of the world

- Surfing the Web

- Instant messaging (IM) between computer with IM software installed.

- E-mail

- Voice over IP (VoIP)

- A converged network is one that transports multiple forms of traffic (video, voice, and

data)

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fac.ksu.edu.sa/wdahbour 4

Network Components: 1-1


Network Components

5

The network components are:

• The physical elements, or hardware such as a laptop, switch, router, wireless access point, the

cabling used to connect the devices, … etc.

• The services, called software, that provide information in response to a request like email hosting

services and web hosting services.


Physical Components of the Network:

6

• End Devices or Hosts: These devices form the interface between users and the underlying

communication network. Examples of end devices are Computers (work stations, laptops, file

servers, web servers), Network printers, VoIP phones, Mobile handheld devices, and … etc.

– A host device is either the source or destination of a message transmitted over the network.

• Intermediary Network Devices: Intermediary devices connect the individual hosts to the

network and can connect multiple individual networks to form an internetwork. Examples of

intermediary devices are switches, wireless access points, routers, firewalls, and … etc.

– These devices use the destination host address to determine the path that messages should take

through the network.

• Network Media: The medium provides the channel over which the message travels from

source to destination. The three types of media are Copper, Fiber Optic, and Wireless.


Network Representations:

7


Network Interfaces Card (NIC):

8

• NIC: is a device installed in a computer, printer, or any other network component

so they can be connected to a network.


Network Components

•Client: The term client defines the device an end user uses to access a network.

9


Network Components

•Server: A server provides resources to a network. (Email, Web pages, or files)

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Hub:

11

• is a device that contains multiple ports to connect multiple computers or network

devices to each other. When a computer transmit data through a hub, the hub will

broadcast the data to all other computers attached to it.

Broadcast: the data are sent to every device on a network.


Switch:

12

• Switch: is a device that contains multiple ports to connect multiple

computers or network devices to each other. Unlike hub, switch can

send the data to only the destined computer.


Bridge:

13

• Bridge: we can say that the bridge is the old version of the switch, where the

bridge works almost like the switch.


Router:

14

• Router: is a device whose primary purpose is to connect two or more networks and determine the next

network point to which the data should be forwarded toward its destination.


Wireless Access Point (WAP)

15


Media:

16


Wide Area Network (WAN) Links

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Network Resources: 1-2


Network Resources

19


Network Resources

20


Network Resources

21


Network Resources

22


Network Resources

23


Network Resources

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Network Geography: 1-3


Network Geography

26


Network Geography

27


Network Geography

28


Network Geography

29


Network Geography

30


Network Geography

31


Wired Network Topology: 1-4


Wired Network Topology

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34



35



36



37



38



39

Simulation of Network Topology

Network-Topology.exe


Wireless Network Topology: 1-5


Wireless Network Topology

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42



43


Internet of Things (IoT): 1-6


Internet of Things (IoT)

45


IoT Technologies

46


IoT Technologies

47


Chapter 1- Questions:


Question#1:

49

In a standard Cisco network diagram, what component does the symbol in the

figure represent?

A. A hub

B. A switch

C. A router

D. A gateway


Question#2:

50

Many network diagrams use Cisco symbols to illustrate the locations and

relationships between network components. Cisco symbols are standardized

pictographs that illustrate the basic function of a network component. In a

network diagram that uses Cisco symbols, what component does the symbol in the

figure represent?

A. A hub

B. A switch

C. A router

D. A gateway


Question#3:

51

Can two connected computers be considered a network?

A. Yes.

B. No.


Question#4:

52

The internet is what type of networks?

A. PAN.

B. LAN.

C. WAN.

D. CAN.


Question#5:

53

_____ Area network covers a large geographical area

A. Local.

B. Metropolitan.

C. Wide.

D. Web.


Question#6:

54

Every NIC has a unique serial number called a...

A. WAN

B. MAC address

C. IP address


Question#7:

55

MAC stands for …………

Media Access Control


Question#8:

56

A NIC is...

A. A computer card that offers dedicated full time access to the network.

B. A computer card that offers as needed access to the internet.

C. A computer card that offers a modem connection.


Question#9:

57

NIC stands for …………

Network Interface Card


Question#10:

58

A Firewall considered as:

A. End Device.

B. Intermediary Device.

C. Network Media.


Question#11:

59

In computer networking, the term "Collision" refers to a situation in which two or

more demands are made simultaneously on an equipment that can handle only

one request at any given moment.

A. True.

B. False.


Question#12:

60

Which of the following network topologies is most commonly used in

contemporary Ethernet LANs?

A. Bus topology

B. Star topology

C. Ring topology

D. Mesh topology


Question#13:

61

A network topology in which each node connects to exactly two other nodes is

referred to as:

A. Partial mesh topology

B. Ring topology

C. Full mesh topology

D. Star topology


Question#14:

62

A network topology in which each node has a direct physical connection to every

other node is known as:

A. Star

B. Partial mesh

C. Bus

D. Full mesh

E. Ring


Question#15:

63

Which type of network topology provides the highest level of redundancy?

A. Star

B. Bus

C. Mesh

D. Ring


Question#16:

64

Which of the following answers lists the number of connections in a full mesh

network consisting of 10 nodes?

A. 21

B. 28

C. 36

D. 45


Question#17:

65

In which type of network topology, the main network cable becomes a single point

of failure?

A. Star

B. Full mesh

C. Bus

D. Partial mesh


Question#18:

66

A network connecting computers within a small geographical area such as a

building or group of buildings is known as:

A. PAN

B. LAN

C. MAN

D. WAN


Question#19:

67

A type of network consisting of computers and peripheral devices that use high-

frequency radio waves to communicate with each other is called:

A. MAN

B. WLAN

C. LAN

D. VLAN


Question#20:

68

A computer network connecting multiple LANs over an area of a city or campus is

referred to as:

A. PAN

B. LAN

C. MAN

D. WAN


Question#21:

69

In terms of size and reach, a Metropolitan Area Network (MAN) can be placed

between a LAN (smaller type of network) and a WAN (larger type of network).

A. True

B. False


Question#22:

70

A computer network connecting multiple smaller networks over very large

geographical areas is known as:

A. PAN

B. LAN

C. MAN

D. WAN


Question#23:

71

The Internet is an example of a large public WAN.

A. True

B. False


Question#24:

72

A wireless networking topology in which client devices communicate directly with

each other without the use of a controlling Access Point (AP) is called:

A. IEEE 802.3af

B. Star topology

C. Ad hoc mode

D. IEEE 802.3at

E. Infrastructure mode


Question#25:

73

A wireless networking topology consisting of at least one Access Point (AP) is

referred to as:

A. IEEE 802.3af

B. Star topology

C. Ad hoc mode

D. IEEE 802.3at

E. Infrastructure mode


Question#26:

74

Which of the answers listed below refers to a wireless protocol designed to

provide communication between appliances in a home automation network?

A. FCoE

B. SDN

C. Z-Wave

D. SIEM


Question#27:

75

An emerging field of new technologies, such as wearable tech or home

automation is known as:

A. SoC

B. NFC

C. IoT

D. ESN


Question#28:

76

A type of limited-range computer network used for data transmission among

various types of personal devices is generally referred to as:

A. PAN

B. LAN

C. SAN

D. MAN


Question#29:

77

A dedicated local network consisting of devices providing data access is called:

A. PAN

B. CAN

C. SAN

D. MAN


Question#30:

78

Which of the following answers refers to a wireless connectivity technology used

for monitoring sensor data collected from low-powered sports and fitness

equipment?

A. CAN

B. WTLS

C. UAV

D. ANT+


Question#31:

79

A popular, short-range wireless technology used for connecting various personal

devices in a WPAN is called:

A. 802.11

B. NFC

C. Bluetooth

D. Z-Wave


Question#32:

80

Which of the answers listed below refers to a short distance, line-of-sight

technology used for example in home remote controls?

A. NFC

B. 802.3

C. IR

D. Z-Wave


Question#33:

81

Which of the following wireless technologies enables identification and tracking of

tags attached to objects?

A. WAF

B. RFID

C. GPS

D. WTLS


Question#34:

82

Which type of technology enables contactless payment transactions?

A. NFC

B. SDN

C. PED

D. WAP


End of Chapter (1)

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