/
GitHubInstagramXGitBook

Networking Mock Questions (Solve)

Unit 5 mock

Posted on 3/20/2025

Networking Mock Questions

Question 1

How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.259.0?

  • a. 510
  • b. 2048
  • c. 1024
  • d. 1022 ✓

Question 2

Match the protocol with its associated port number:

  • FTP: 21
  • DNS: 53
  • SMTP: 25
  • Telnet: 23
  • DHCP: 67/68

Question 3

Which of the following statements describes a WAN?

  • a. 60 computer systems connected through switches and hubs spread over many buildings
  • b. Provides connectivity on a LAN
  • c. Many networks connected in a small campus or building
  • d. Provides connectivity over a large geographic area ✓

Question 4

What is the key difference between TCP and UDP?

  • a. TCP is connection-oriented, while UDP is connectionless ✓
  • b. TCP is used for local networks, while UDP is used for the internet
  • c. TCP requires a three-way handshake, while UDP does not
  • d. UDP guarantees data delivery, while TCP does not

Question 5

Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

  • a. Layer 2
  • b. Layer 3
  • c. Layer 4 ✓
  • d. Layer 7

Question 6

What is the maximum recommended length for a single segment of UTP cable in a LAN?

  • a. 90 meters
  • b. 50 meters
  • c. 100 meters ✓
  • d. 200 meters

Question 7

In the IPv6 address structure, how many bits are included in each field (hexadecimal)?

  • a. 4
  • b. 128
  • c. 24
  • d. 3
  • e. 16 ✓

Question 8

What device is considered an intermediary device?

  • a. Routers ✓
  • b. Wireless Access Points ✓
  • c. Printers
  • d. Switches ✓
  • e. Loops
  • f. PCs
  • g. File servers

Question 9

What is the role of the presentation layer in the OSI model?

  • a. Encrypting and compressing application layer data ✓
  • b. Assigning IP addresses to devices
  • c. Handling error detection and correction
  • d. Routing data between networks

Question 10

In VLSM, how does subnetting contribute to efficient IP address allocation?

  • a. Minimizes IP address wastage ✓
  • b. Creates smaller collision domains
  • c. Maximizes the security
  • d. Minimizes broadcast domains

Question 11

What is the main limitation of classful IPv4 addressing?

  • a. It wastes IP addresses due to fixed network sizes ✓
  • b. It only works with IPv6
  • c. It does not support routing protocols
  • d. It supports too many hosts per network

Question 12

What is the function of a gateway in a network?

  • a. To store routing tables for all network devices
  • b. To connect two different networks and forward packets between them ✓
  • c. To assign IP addresses to devices dynamically
  • d. To encrypt data for secure transmission

Question 13

What is the purpose of the Dynamic Host Configuration Protocol (DHCP)?

  • a. To establish and maintain network connections
  • b. To dynamically assign IP addresses to network devices ✓
  • c. To translate domain names to IP addresses
  • d. To transfer files between computers

Question 14

Packet Switching Achievements (Choose 2):

  • a. Secures the communication as only packets from one source use the communications link
  • b. Increases the reliability of network communications ✓
  • c. Separate pieces of each message can travel across different paths to destination ✓
  • d. Reduces the amount of overhead that is needed in the communication

Question 15

Multiplexing and demultiplexing are the services facilitated by the transport layer.

  • True ✓
  • False

Question 16

What is the prefix length notation for the subnet mask 255.255.255.224?

  • a. /27 ✓
  • b. /26
  • c. /25
  • d. /28

Question 17

TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol.

  • True ✓
  • False

Question 18

Which IPv6 address type is globally unique and routable over the Internet?

  • a. Global unicast address ✓
  • b. Link-local address
  • c. Multicast address
  • d. Anycast address

Question 19

In a subnetted network, what does borrowing bits from the host portion achieve?

  • a. Increases the number of available hosts
  • b. Creates smaller subnets ✓
  • c. Prevents broadcast traffic
  • d. Converts IPv4 addresses into IPv6

Question 20

Why do large networks divide hosts into sub-networks?

  • a. To increase the number of IP addresses available
  • b. To eliminate the need for routing
  • c. To reduce the number of MAC addresses in the network
  • d. To improve performance and security ✓

Question 21

Which sentence gives the correct definition for scalability in the network?

  • a. Limits the impact of hardware or software failures and provides failure recovery mechanisms
  • b. Supports expansion of the network infrastructure to support new users and applications ✓
  • c. Provides confidential and business critical information to users without alteration

Question 22

Which protocol is responsible for sending email messages?

  • a. SMTP ✓
  • b. FTP
  • c. POP3
  • d. IMAP

Question 23

A network administrator divides the 192.168.10.0/24 network into subnets using /26 masks, How many subnets of equal size are created?

  • a. 4 ✓
  • b. 62
  • c. 64
  • d. 8

Question 24

Match the related network and broadcast address in the diagram above.

Network 1: 192.168.45.0 - 192.168.45.255 Network 2: 163.15.0.0 - 163.15.255.255 Network 3: 10.0.0.0 - 10.255.255.255 Network 4: 172.16.0.0 - 172.16.255.255

Question 25

How many usable hosts are available in a subnet with a /30 mask?

  • a. 2 ✓
  • b. 4
  • c. 6
  • d. 8

Question 26

What is the subnet mask for a network that allows for 500 usable hosts?

  • a. 255.255.255.0
  • b. 255.255.254.0 ✓
  • c. 255.255.252.0
  • d. 255.255.248.0

Question 27

Which of the following is a benefit of using NAT (Network Address Translation)?

  • a. Increases network security
  • b. Allows multiple devices to share a single public IP address
  • c. Enables private IP addresses to be used on the public Internet
  • d. All of the above ✓

Question 28

What type of network topology connects all devices to a central hub?

  • a. Star ✓
  • b. Ring
  • c. Bus
  • d. Mesh

Question 29

What is the primary function of a router?

  • a. To connect devices within the same local network
  • b. To forward data packets between different networks ✓
  • c. To filter traffic based on MAC addresses
  • d. To provide wireless connectivity

Question 30

Which layer of the OSI model is responsible for establishing, maintaining, and terminating connections?

  • a. Application Layer
  • b. Transport Layer ✓
  • c. Network Layer
  • d. Data Link Layer

Question 31

ServerA is attempting to reach PC1. Which two statements correctly indicate the address that ServerA will generate during the process? (Choose two)

  • a. ServerA will generate a frame with the destination MAC address of Switch 2
  • b. ServerA will generate a packet with the destination IP address of Router 1
  • c. ServerA will generate a frame with the destination MAC address of Router 1
  • d. ServerA will generate a packet with the destination IP address of PC1 ✓
  • e. ServerA will generate a packet with the destination IP address of Router 2
  • f. ServerA will generate a frame with the destination MAC address of Router 2 ✓