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Question 1

What is the definition of a network?

Answer 1

A network is a group of interconnected computers, devices, and resources enabling communication and data exchange.

Question 2

Why is networking important?

Answer 2

Crucial for communication, information sharing, collaboration, and underpins modern technologies like cybersecurity, cloud computing, and IoT.

Question 3

List three functions of a network as a platform.

Answer 3

• Communication: Instant messaging, email, VoIP, social media
• Collaboration: Online tools, project management, virtual meetings, file sharing
• Resource Sharing: Printers, scanners, centralized servers, databases, internet access

Question 4

What unique identifiers do devices use in a network?

Answer 4

IP addresses.

Question 5

What communication protocols are commonly used in networks?

Answer 5

TCP/IP.

Question 6

What is the largest WAN?

Answer 6

The Internet.

Question 7

What is a LAN?

Answer 7

Local Area Network: Small, limited area (home, office). E.g., Home Wi-Fi.

Question 8

What is a MAN?

Answer 8

Metropolitan Area Network: Larger than LAN, smaller than WAN (city-wide).

Question 9

What defines a WAN?

Answer 9

Wide Area Network: Large geographical distances (cities, countries). E.g., The Internet.

Question 10

What is a PAN?

Answer 10

Personal Area Network: Small-scale, personal devices (Bluetooth, wireless keyboards).

Question 11

What is the difference between physical and logical topology?

Answer 11

• Physical Topology: Actual arrangement of devices and cables.
• Logical Topology: How data flows, independent of physical design.

Question 12

Name a common characteristic of bus topology.

Answer 12

All devices on a single cable.

Question 13

What is a star topology?

Answer 13

All devices connect to a central device (switch/router).

Question 14

What is a ring topology?

Answer 14

Devices connected circularly, data flows in one direction.

Question 15

Describe mesh topology.

Answer 15

Every device connected to every other device, high redundancy, but high cost and complexity.

Question 16

What are the key characteristics for SMBs in network design?

Answer 16

• Reliability: Continuous uptime is critical.
• Scalability: Must expand easily with business growth.
• Security: Strong firewalls, encryption, authentication for data protection.
• Performance: Fast, low-latency for real-time operations.

Question 17

What was the standard for wired LANs developed in the 1970s?

Answer 17

Ethernet.

Question 18

What is Wi-Fi, and when was it introduced?

Answer 18

Wi-Fi (IEEE 802.11) was introduced in the late 1990s for wireless LANs.

Question 19

What is TCP/IP?

Answer 19

Standard for global interconnectivity.

Question 20

What is the role of routers in a network?

Answer 20

Direct data packets between different networks, determine best path.

Question 21

What is the function of switches in a network?

Answer 21

Connect multiple devices within the same LAN, forward data to correct destination.

Question 22

What are the differences between TCP and UDP?

Answer 22

• TCP: Reliable, connection-oriented, guarantees delivery, order, error checking.
• UDP: Faster, connectionless, no guarantees.

Question 23

What are the two types of network media?

Answer 23

• Wired Media (Bounded/Guided)
• Wireless Media (Unbounded/Radiated)

Question 24

What is the advantage of fiber optic cables?

Answer 24

High bandwidth, low attenuation, immunity to EMI, security, lightweight/compact.

Question 25

What are the two main types of fiber optic cables?

Answer 25

* Single-Mode Fiber (SMF) * Multi-Mode Fiber (MMF)

Question 26

What is attenuation in networking?

Answer 26

Loss of signal strength.

Question 27

What are the steps to create network cables using T568A and T568B standards?

Answer 27

Follow specific wiring standards for both T568A and T568B.

Question 28

What does a router use to determine the best path for data packets?

Answer 28

Routing tables.

Question 29

What are the types of cables used in networking?

Answer 29

* Roll Over Cable * Cross Over Cable * Straight Cable

Question 30

What is the purpose of ARP in networking?

Answer 30

Maps IP addresses to MAC addresses.

Question 31

What does the OSI model represent?

Answer 31

7-layer conceptual framework for data communication.

Question 32

Fill in the blank: The ______ layer in the OSI model ensures complete data transfer.

Answer 32

Transport

Question 33

True or False: The Internet is a private network.

Answer 33

False.

Question 34

What is the primary function of a firewall?

Answer 34

Monitor/control traffic based on rules.

Question 35

What is the role of a modem in networking?

Answer 35

Convert digital data to analog signals for transmission (and vice versa).

Question 36

What are the disadvantages of static routing?

Answer 36

Doesn't scale well, requires manual updates for topology changes.

Question 37

What is the command to configure a static route for network 192.168.2.0/24 through next-hop IP 192.168.1.2?

Answer 37

ip route 192.168.2.0 255.255.255.0 192.168.1.2

Question 38

What does FTP stand for?

Answer 38

File Transfer Protocol

Question 39

What is the first step to set up FTP file sharing?

Answer 39

Set up FTP server

Question 40

What is the command to enter privileged EXEC mode in Cisco IOS?

Answer 40

Router> enable

Question 41

What command is used to configure the terminal in Cisco IOS?

Answer 41

Router# configure terminal

Question 42

How do you set a hostname in Cisco IOS?

Answer 42

Router(config)# hostname [hostname]

Question 43

What command configures the IP address on an interface in Cisco IOS?

Answer 43

Router(config-if)# ip address [IP address] [subnet mask]

Question 44

What command verifies the configuration of IP interfaces in Cisco IOS?

Answer 44

Router# show ip interface brief

Question 45

What does the PING command test?

Answer 45

Network connection between two devices

Question 46

What does a successful PING response indicate?

Answer 46

Connectivity is established

Question 47

What is the purpose of ARP?

Answer 47

Maps IP addresses to MAC addresses

Question 48

What are the two sublayers of the Data Link Layer?

Answer 48

* LLC (IEEE 802.2) * MAC (IEEE 802.3)

Question 49

What does the MAC sublayer do?

Answer 49

Controls media access, frame transmission, addressing

Question 50

What are the wiring standards for UTP CAT5e cables?

Answer 50

* T568A * T568B

Question 51

What type of cable is used to connect a computer to a router or switch for configuration?

Answer 51

Roll Over Cable

Question 52

What is the principle for light travel in fiber optics?

Answer 52

Total Internal Reflection

Question 53

What are the two types of fiber optic cables?

Answer 53

* Single-Mode Fiber (SMF) * Multi-Mode Fiber (MMF)

Question 54

What does attenuation refer to in networking?

Answer 54

Loss of signal strength

Question 55

What is the difference between TCP and UDP?

Answer 55

* TCP: Reliable, connection-oriented, 3-way handshake * UDP: Faster, connectionless, less reliable

Question 56

What does the OSI Model consist of?

Answer 56

* Application * Presentation * Session * Transport * Network * Data Link * Physical

Question 57

What is the role of the Default Gateway?

Answer 57

Router IP for communication outside local network

Question 58

What is a Routing Table?

Answer 58

Database of network paths

Question 59

What does LAN stand for?

Answer 59

Local Area Network

Question 60

What are the characteristics of a Star Topology?

Answer 60

Central device, central device failure risk

Question 61

What is the maximum speed and distance of CAT 5e cable?

Answer 61

1 Gbps / 100m

Question 62

What is the primary function of the Transport Layer in the OSI model?

Answer 62

End-to-end communication, segmentation, error detection, flow control

Question 63

What is the command to test network connectivity using PING?

Answer 63

ping [IP address]

Question 64

What command shows the current device configuration in Cisco IOS?

Answer 64

show running-config