Network Architecture: Master the Design and Structure of Computer Networks

Question 1

To safeguard a network against external threats, which strategy is most effective?

Accepted Answer

Deploy robust firewalls and intrusion detection systems.

Answer

Neglect security measures to enhance network efficiency.

Answer

Disable security updates and patches to prevent system disruptions.

Answer

Educate users about security but refrain from enforcing security policies.

Question 2

In computer networks, protocols play a crucial role. What is their primary function?

Accepted Answer

Define rules and formats for data transmission, ensuring interoperability between devices.

Answer

Used exclusively in wireless networks, not wired networks.

Answer

Optional components that can be omitted during network design.

Answer

Provide security measures for data transmission.

Question 3

In the OSI model, which layer is accountable for establishing, maintaining, and terminating network connections?

Accepted Answer

Transport Layer

Answer

Network Layer

Answer

Application Layer

Answer

Data Link Layer

Question 4

Which network topology features devices connected to a central hub, resembling a star shape?

Accepted Answer

Star Topology

Answer

Mesh Topology

Answer

Ring Topology

Answer

Bus Topology

Question 5

For transmitting data across the Internet, which communication protocol is predominantly employed?

Accepted Answer

TCP/IP

Answer

UDP

Answer

FTP

Answer

HTTP

Question 6

Which security measure employs encryption techniques to safeguard data during transmission, preventing unauthorized access?

Accepted Answer

Encryption

Answer

Authentication

Answer

Intrusion Detection Systems

Answer

Firewalls

Question 7

Which network device serves as a gateway between disparate networks, enabling communication across different subnets?

Accepted Answer

Router

Answer

Switch

Answer

Modem

Answer

Hub

Question 8

In network performance evaluation, which metric quantifies the time required for a data packet to traverse from one point to another?

Accepted Answer

Latency

Answer

Throughput

Answer

Bandwidth

Question 9

For monitoring and managing network performance, troubleshooting issues, and maintaining network health, which network management tool is commonly utilized?

Accepted Answer

Network Management System (NMS)

Answer

Packet Sniffers

Answer

Network Analyzers

Answer

IP Scanners

Question 10

Which type of firewall employs stateful inspection techniques to filter network traffic based on specific criteria, including IP addresses, port numbers, and protocols?

Accepted Answer

Stateful Firewall

Answer

Application-Level Firewall

Answer

Proxy Firewall

Answer

Packet Filter Firewall

Question 11

In the realm of wireless networking, which standard offers enhanced bandwidth and extended range, catering to the needs of mobile devices?

Accepted Answer

Wi-Fi 6 (802.11ax)

Answer

Wi-Fi 3 (802.11g)

Answer

Wi-Fi 5 (802.11ac)

Answer

Wi-Fi 4 (802.11n)

Question 12

In a star network topology, devices are connected to a central hub. Which of the following most accurately describes the characteristics of star topologies?

Accepted Answer

Single point of failure, easy to manage, and scalable

Answer

Robust, high bandwidth, and difficult to troubleshoot

Answer

Fast data transfer, low power consumption, and secure

Answer

Low latency, low cost, and high reliability

Question 13

Which communication protocol provides a reliable and connection-oriented service for data exchange over a network?

Accepted Answer

TCP

Answer

ICMP

Answer

UDP

Answer

HTTP

Question 14

Which security measure is primarily responsible for preventing unauthorized access to a network from external threats?

Accepted Answer

Firewall

Answer

Intrusion detection system

Answer

Encrypted passwords

Answer

Antivirus software

Question 15

Which network architecture model defines a hierarchical framework of layers, each performing specific functions in network communication?

Accepted Answer

OSI model

Answer

TCP/IP model

Answer

Wireless model

Answer

Ethernet model

Question 16

Which networking device is responsible for directing network traffic based on destination IP addresses?

Accepted Answer

Router

Answer

Hub

Answer

Switch

Answer

Modem

Question 17

Which wireless network standard is known for providing a high data transfer rate and is commonly used in home and office environments?

Accepted Answer

Wi-Fi 6

Answer

NFC

Answer

Bluetooth

Answer

Zigbee

Question 18

Which network performance metric measures the delay experienced by data packets as they traverse a network?

Accepted Answer

Latency

Answer

Bandwidth

Answer

Jitter

Answer

Throughput

Question 19

Which network security technique transforms data into an unreadable format to protect its confidentiality?

Accepted Answer

Encryption

Answer

Intrusion detection

Answer

Authentication

Answer

Firewalls

Question 20

Which network design principle emphasizes the ability of a network to withstand and recover from failures and maintain service continuity?

Accepted Answer

Resiliency

Answer

Scalability

Answer

Manageability

Answer

Security

Question 21

In a network topology, which one provides a fully interconnected structure where each device is directly connected to every other device?

Accepted Answer

Mesh Topology

Answer

Bus Topology

Answer

Ring Topology

Answer

Star Topology

Question 22

Among the routing protocols, which one employs a distance vector algorithm to calculate the best path to a destination network?

Accepted Answer

RIP

Answer

OSPF

Answer

EIGRP

Answer

BGP

Question 23

In the context of network security, which measure enables the control of access to a network or resource based on user identity and authorization?

Accepted Answer

Access Control List

Answer

Firewall

Answer

Virtual Private Network

Question 24

Which network device serves as an intermediary between different network segments, allowing data exchange among them?

Accepted Answer

Router

Answer

Hub

Answer

Bridge

Answer

Switch

Question 25

In data transmission, what is the process known as Fragmentation?

Accepted Answer

Breaking up large data into smaller, manageable units called packets

Answer

Encapsulating data with additional headers and footers

Answer

Modulating signals for transmission over a medium

Answer

Dividing data into logical segments for storage and access

Question 26

Which network protocol is utilized for translating domain names, such as 'example.com', into numerical IP addresses?

Accepted Answer

DNS

Answer

DHCP

Answer

HTTP

Answer

FTP

Question 27

What is the primary purpose of a MAC address?

Accepted Answer

To uniquely identify a specific device on a network

Answer

To assign IP addresses to devices on a network

Answer

To provide encryption for secure network communication

Answer

To route network traffic based on destination addresses

Question 28

In network architecture, which type features a central authority that manages all devices and controls network traffic?

Accepted Answer

Centralized

Answer

Peer-to-Peer

Answer

Decentralized

Answer

Hierarchical

Question 29

What is the primary function of a subnet mask in a network?

Accepted Answer

To divide a network into smaller, logical subnetworks

Answer

To filter and block unauthorized network traffic

Answer

To assign IP addresses to individual devices on a network

Question 30

In network architecture, which topology connects all network nodes directly to a central device?

Accepted Answer

Star

Answer

Bus

Answer

Ring

Answer

Mesh

Question 31

Which protocol is primarily responsible for routing data across the internet?

Accepted Answer

TCP/IP

Answer

SMTP

Answer

HTTP

Answer

DHCP

Question 32

What is the primary function of a firewall in network security?

Accepted Answer

Monitoring and controlling incoming and outgoing network traffic

Answer

Detecting and removing viruses

Answer

Managing user access to network resources

Answer

Encrypting data transmissions

Question 33

Which layer of the TCP/IP model is responsible for establishing and maintaining connections between applications?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Physical Layer

Answer

Network Layer

Question 34

What is the purpose of a MAC address in network communication?

Accepted Answer

To uniquely identify a network interface card (NIC)

Answer

To control access to network resources

Answer

To determine the path of traffic across a network

Answer

To provide encryption for data transmissions

Question 35

Which network architecture is best suited for large and complex networks, often employing a hierarchical structure?

Accepted Answer

Hierarchical

Answer

Bus

Answer

Ring

Answer

Flat

Question 36

What is the primary purpose of a VPN (Virtual Private Network)?

Accepted Answer

To establish a secure and private connection over a public network

Answer

To increase the speed of network connections

Answer

To manage user accounts and permissions on a network

Answer

To provide access to geographically restricted content

Question 37

Which metric measures the delay in data transmission over a network?

Accepted Answer

Latency

Answer

Packet loss

Answer

Throughput

Answer

Jitter

Question 38

What is a primary advantage of using a wireless network?

Accepted Answer

Increased mobility and flexibility

Answer

Enhanced reliability

Answer

Higher security

Answer

Lower cost of implementation

Question 39

Which cloud computing model offers the highest level of control and customization over infrastructure?

Accepted Answer

IaaS (Infrastructure as a Service)

Answer

PaaS (Platform as a Service)

Answer

FaaS (Function as a Service)

Answer

SaaS (Software as a Service)

Question 40

Which network topology is characterized by a hierarchical structure, resembling a tree with branches?

Accepted Answer

Tree

Answer

Bus

Answer

Ring

Answer

Mesh

Question 41

Which security measure acts as a barrier between a network and external threats, preventing unauthorized access?

Accepted Answer

Firewall

Answer

Switch

Answer

Router

Answer

Hub

Question 42

Which type of network cable is commonly used for connecting devices within a building, offering a balance of cost and performance?

Accepted Answer

Unshielded Twisted Pair (UTP)

Answer

Serial cable

Answer

Fiber optic cable

Answer

Coaxial cable

Question 43

Which addressing scheme assigns unique logical addresses to devices on a network, enabling communication?

Accepted Answer

IP addressing

Answer

Email addressing

Answer

MAC addressing

Answer

DNS addressing

Question 44

Which protocol is specifically designed for transferring files between computers over a network?

Accepted Answer

File Transfer Protocol (FTP)

Answer

Simple Mail Transfer Protocol (SMTP)

Answer

Hypertext Transfer Protocol (HTTP)

Answer

Domain Name System (DNS)

Question 45

Which network topology connects all devices to a central hub, resembling a star shape?

Accepted Answer

Star

Answer

Mesh

Answer

Ring

Answer

Bus

Question 46

Which network topology offers the highest level of redundancy, ensuring network operation even if multiple connections fail?

Accepted Answer

Mesh

Answer

Star

Answer

Bus

Question 47

In the TCP/IP model, which layer is responsible for routing packets across different networks?

Accepted Answer

Network Layer

Answer

Transport Layer

Answer

Data Link Layer

Answer

Application Layer

Question 48

A company needs to securely connect a remote employee's computer to its private network. Which technology provides a secure, encrypted connection over the public internet?

Accepted Answer

VPN (Virtual Private Network)

Answer

LAN (Local Area Network)

Answer

WAN (Wide Area Network)

Answer

PAN (Personal Area Network)

Question 49

What is the primary function of a subnet mask in network addressing?

Accepted Answer

To identify the network portion of an IP address.

Answer

To translate domain names into IP addresses.

Answer

To prevent unauthorized access to a network.

Answer

To encrypt data transmitted over a network.

Question 50

Which protocol is primarily responsible for mapping domain names to their corresponding IP addresses?

Accepted Answer

DNS (Domain Name System)

Answer

DHCP (Dynamic Host Configuration Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

FTP (File Transfer Protocol)

Question 51

What is a primary advantage of using fiber optic cables for data transmission?

Accepted Answer

High bandwidth and low signal loss over long distances

Answer

Resistance to electromagnetic interference

Answer

Flexibility and ease of installation

Question 52

Which type of attack attempts to disrupt the normal operation of a network service by flooding it with excessive traffic?

Accepted Answer

Denial-of-Service (DoS) attack

Answer

Man-in-the-middle attack

Answer

Malware infection

Question 53

What is the primary function of Network Address Translation (NAT)?

Accepted Answer

Conserving public IP addresses by allowing multiple devices to share a single public IP

Answer

Translating private IP addresses to public IP addresses

Answer

Encrypting network traffic

Question 54

Which technology is best suited for logically dividing a network into multiple segments to improve security and performance?

Accepted Answer

VLAN (Virtual Local Area Network)

Answer

Router

Answer

VPN (Virtual Private Network)

Answer

Firewall

Question 55

What is a key advantage of using a layered network model?

Accepted Answer

Simplifies network design and troubleshooting by organizing complex processes into logical layers

Answer

Increases network security and reduces network performance