Networking Fundamentals And Security Practice Test Practice Tests

Question 1

A file of 24 MB is transmitted over a network with a bandwidth of 2 Mbps. Calculate the minimum time in seconds required for the complete file transfer. (Note: 1 MB = 8 Mb)

Accepted Answer

96

Question 2

A network has a latency of 50 ms. If a packet of 1000 bytes is sent, what is the one-way transmission delay in seconds, assuming the speed of light is $3 \times 10^8$ m/s and the distance is negligible?

Accepted Answer

A. 0.05

Answer

B. 0.1

Answer

C. 0.005

Answer

D. 0.5

Question 3

A subnet mask is configured as 255.255.255.0. How many usable host addresses are available in this subnet?

Accepted Answer

C. 254

Answer

A. 256

Answer

B. 255

Answer

D. 253

Question 4

In a star topology, a failure in the central hub or switch will not affect the entire network.

Accepted Answer

True

Answer

False

Question 5

Which of the following layers are part of the TCP/IP model?

Answer

A. Application

Answer

B. Transport

Answer

C. Internet

Answer

D. Network Access

Answer

E. Session

Answer

F. Presentation

Question 6

Calculate the signal-to-noise ratio (SNR) in decibels (dB) if the signal power is 100 milliwatts (mW) and the noise power is 1 mW. Use the formula: $SNR_{dB} = 10 \log_{10}(\frac{P_{signal}}{P_{noise}})$

Accepted Answer

20

Question 7

A network administrator needs to connect two networks that operate on different physical layers but use the same network protocol. Which device is most suitable for this task?

Accepted Answer

B. Router

Answer

A. Hub

Answer

C. Switch

Answer

D. Repeater

Question 8

Given an IPv4 address of 172.16.5.25 with a subnet mask of /20, what is the network address?

Accepted Answer

172.16.0.0

Question 9

Which routing protocol is a distance-vector protocol that uses hop count as its primary metric?

Accepted Answer

A. RIP

Answer

B. OSPF

Answer

C. BGP

Answer

D. ICMP

Question 10

A hub intelligently forwards data packets only to the intended recipient, reducing network congestion.

Accepted Answer

True

Answer

False

Question 11

Which of the following are advantages of using IPv6 over IPv4? (Select all that apply)

Answer

A. Larger address space

Answer

B. Native backward compatibility with IPv4

Answer

C. Simplified header format

Answer

D. Guaranteed better security

Question 12

A network has the address 192.168.1.0/27. How many usable host addresses are available in this subnet?

Accepted Answer

30

Question 13

Which network device operates at the data link layer and filters traffic based on MAC addresses?

Accepted Answer

C. Bridge

Answer

A. Router

Answer

B. Hub

Answer

D. Repeater

Question 14

A network administrator observes a sudden surge in network traffic originating from multiple internal hosts, all directed towards a single external server. Analysis reveals that the traffic consists of seemingly random requests. Which type of attack is MOST likely occurring?

Accepted Answer

C. DDoS (Distributed Denial-of-Service)

Answer

A. Phishing

Answer

B. Malware infection

Answer

D. SQL injection

Question 15

A company's firewall is configured to block all incoming traffic on port 25. Which type of traffic is being blocked?

Accepted Answer

B. SMTP (Simple Mail Transfer Protocol)

Answer

A. HTTP (Hypertext Transfer Protocol)

Answer

C. DNS (Domain Name System)

Answer

D. SSH (Secure Shell)

Question 16

A network administrator needs to implement a security measure that allows remote users to securely access the company network over the internet. Which of the following technologies is MOST suitable for this purpose?

Accepted Answer

C. VPN (Virtual Private Network)

Answer

A. Firewall

Answer

B. IDS (Intrusion Detection System)

Answer

D. Load balancer

Question 17

Regular software updates are crucial for maintaining network security because they patch vulnerabilities that could be exploited by attackers.

Accepted Answer

True

Answer

False

Question 18

A user reports that they cannot access any websites. The network administrator suspects a DNS issue. Which command-line tool can be used to verify if the user can resolve domain names to IP addresses?

Accepted Answer

C. nslookup

Answer

A. ping

Answer

B. traceroute

Answer

D. ipconfig

Question 19

A network link has a bandwidth of 100 Mbps. If the measured throughput is 60 Mbps, calculate the percentage of bandwidth utilization. Express your answer as a percentage rounded to two decimal places. Use the formula: Utilization = (Throughput / Bandwidth) * 100

Accepted Answer

60.00%

Question 20

Which of the following steps are part of a systematic troubleshooting methodology?

Answer

A. Identify

Answer

B. Isolate

Answer

C. Resolve

Answer

D. Verify

Answer

E. Ignore

Networking Fundamentals And Security Practice Test Practice Tests

Practice Tests

Networking Fundamentals and Security Practice Test

Generate Networking Fundamentals And Security Practice Test practice tests with AI