WorksheetsNMK20403-PRACTISE QUIZ
Total questions: 61
Worksheet time: 47mins
Name
Class
Date
1.
Please type your FULL NAME AND METRIC NUMBER
4 lines
2.
Which of the following are main components of a network architecture?
a)
Routers
b)
Firewalls
c)
Switches
d)
Transmission Media
e)
Clients
3.
Which of the following are types of transmission media?
a)
Twisted Pair Cable
b)
Coaxial Cable
c)
Fiber Optic Cable
d)
Wireless
e)
Ethernet
4.
What are the primary functions of the main components of a network architecture?
a)
Routers: Direct data packets between different networks
b)
Switches: Connect devices within the same network and direct data packets within the network
c)
Transmission Media: Physical pathways for data transmission
d)
Servers: Provide resources and services to clients
e)
Firewalls: Monitor and control network traffic based on security rules
5.
How do the main components of a network architecture work together to provide network services?
a)
Routers manage data traffic between different networks, ensuring data reaches its destination.
b)
Switches handle communication within a single network, directing data packets to the correct devices.
c)
Transmission Media serves as the physical conduit for data to travel between network components.
d)
Servers host applications and data, making them accessible to clients over the network.
e)
Clients initiate requests for resources and services from servers.
6.
Identify All application that uses Transmission Control Protocol (TCP)
a)
HTTP
b)
DNS
c)
FTP
d)
VoIP
e)
SMTP
7.
Why do certain applications prefer Transmission Control Protocol (TCP)?
a)
Ensures data integrity
b)
Provides reliable data transfer
c)
Maintains data order
d)
Offers faster transmission speeds
e)
Requires less bandwidth
8.
Why do certain applications prefer User Datagram Protocol (UDP)?
a)
Lower latency
b)
Faster data transmission
c)
Connectionless protocol
d)
Ensures data integrity
e)
Suitable for real-time applications
9.
Check all key differences between circuit switching and packet switching in communication networks.
a)
Circuit switching establishes a dedicated path
b)
Packet switching divides data into packets
c)
Circuit switching is more efficient for voice communication
d)
Packet switching is more efficient for data transmission
e)
Packet switching requires a dedicated path
10.
Why is packet switching more effective for modern internet usage, including streaming, browsing, and VoIP?
a)
More efficient use of network resources
b)
Allows multiple users to share the same network path
c)
Provides consistent and predictable network performance
d)
Supports dynamic routing of data packets
e)
Enables real-time communication without delays
11.
What are the advantages of packet switching over circuit switching in handling internet traffic?
a)
Better handling of bursty data traffic
b)
More resilient to network failures
c)
Lower latency for all types of data
d)
Easier to scale with increasing network demands
e)
Ensures complete data delivery in sequence
12.
How does packet switching enhance streaming services compared to circuit switching?
a)
Allows buffering to prevent interruptions
b)
Adapts to varying network conditions
c)
Provides dedicated bandwidth throughout the session
d)
Enables faster data retrieval
e)
Supports on-demand content delivery
13.
Which of the following are key standards in network technology?
a)
IEEE 802.11
b)
ISO/IEC 27001
c)
ITIL
d)
IEEE 802.3
e)
COBIT
14.
Which of the following are standards bodies in network technology?
a)
IEEE
b)
IETF
c)
ITU
d)
ISACA
e)
NIST
15.
What is the significance of standards in ensuring interoperability across devices and networks?
a)
Enables devices from different manufacturers to work together
b)
Ensures consistent performance and reliability
c)
Reduces development and maintenance costs
d)
Limits innovation and technological advancement
e)
Enhances security and data integrity
16.
How do standards contribute to the reliability of network devices and systems?
a)
Define minimum performance requirements
b)
Establish common protocols for communication
c)
Ensure compatibility with existing infrastructure
d)
Promote proprietary solutions
e)
Facilitate troubleshooting and maintenance
17.
Why are standards important for the future growth of network technology?
a)
Provide a foundation for developing new technologies
b)
Ensure global compatibility and adoption
c)
Encourage competition and innovation
d)
Restrict market access to specific vendors
e)
Simplify integration of new devices and systems
18.
What is the significance of using utilities like PING, traceroute, and netstat in managing network communications?
a)
PING checks connectivity and measures round-trip time.
b)
Traceroute maps the path packets take to a destination.
c)
Netstat displays active network connections and routing tables.
d)
PING provides detailed information about data paths.
e)
Traceroute ensures secure data transmission.
19.
Which of the following are primary functions of PING in network management?
a)
Test network connectivity
b)
Measure round-trip time
c)
Identify packet loss
d)
Display detailed packet route information
e)
Provide connection status of local ports
20.
How does traceroute assist in network troubleshooting?
a)
Identifies the path packets take to a destination
b)
Locates points of delay or failure along the route
c)
Measures packet loss between each hop
d)
Provides a graphical representation of network paths
e)
Verifies the integrity of data packets
21.
What information can netstat provide to network administrators?
a)
Active network connections
b)
Listening ports
c)
Routing tables
d)
Network interface statistics
e)
Path of data packets to a destination
22.
Given intermittent connectivity issues, what are the steps in a troubleshooting protocol using PING, traceroute, and netstat?
a)
Use PING to check connectivity to the destination.
b)
Use traceroute to map the path and identify points of delay.
c)
Use netstat to check active connections and network statistics.
d)
Reboot the network router.
e)
Verify the integrity of data packets with traceroute.
23.
Which of the following are key communication services?
a)
Email
b)
VOIP
c)
FTP
d)
HTTP
e)
DNS
24.
How does Email utilize network resources to facilitate communication between users?
a)
Uses SMTP to send messages
b)
Uses POP3/IMAP to retrieve messages
c)
Uses HTTP to access webmail interfaces
d)
Utilizes real-time audio transmission
e)
Requires a dedicated communication line
25.
How does VOIP utilize network resources to facilitate communication between users?
a)
Converts voice signals into digital data packets
b)
Uses IP networks to transmit voice data
c)
Requires high bandwidth for video transmission
d)
Uses RTP for real-time voice data delivery
e)
Provides email messaging capabilities
26.
What protocols are typically used by Email services?
a)
SMTP
b)
POP3
c)
IMAP
d)
RTP
e)
SIP
27.
What protocols are typically used by VOIP services?
a)
SIP
b)
RTP
c)
SMTP
d)
IMAP
e)
H.323
28.
Which of the following are the FOUR (4) layers of the TCP/IP model?
a)
Application
b)
Presentation
c)
Transport
d)
Internet
e)
Network Interface
29.
Match each layer of the TCP/IP model to the corresponding layers in the OSI model.
a)
Application - Application, Presentation, Session
b)
Transport - Transport
c)
Internet - Network
d)
Network Interface - Data Link, Physical
e)
Transport - Data Link
30.
How does the encapsulation process work when a data packet traverses through the TCP/IP layers?
a)
Data is wrapped with protocol-specific headers/trailers at each layer
b)
Each layer adds its own header to the data
c)
Data is stripped of headers/trailers as it ascends layers
d)
Encapsulation ensures proper data routing and delivery
e)
Encapsulation removes redundant data
31.
In a scenario where a message is sent from a web client to a server, what steps does the data undergo from the application layer down to the network layer?
a)
Data is formatted for HTTP at the Application layer
b)
Data is segmented and TCP headers are added at the Transport layer
c)
IP addresses are assigned at the Internet layer
d)
Data frames are created and MAC addresses are assigned at the Network Interface layer
e)
Data is encrypted at each layer
32.
Which protocols are involved at each step when a message is sent from a web client to a server?
a)
HTTP at the Application layer
b)
TCP at the Transport layer
c)
IP at the Internet layer
d)
Ethernet at the Network Interface layer
e)
FTP at the Application layer
33.
What are the primary roles of clients in network communication?
a)
Initiate communication with servers
b)
Respond to requests from servers
c)
Request resources or services
d)
Maintain a list of connected clients
e)
Provide services or resources to other clients
34.
What are the primary roles of servers in network communication?
a)
Respond to client requests
b)
Initiate communication with clients
c)
Provide resources or services
d)
Maintain a list of connected clients
e)
Request resources from other servers
35.
How does the Socket API facilitate communication between clients and servers?
a)
Provides a way to create and use socket connections
b)
Ensures secure data transmission
c)
Allows for binding of IP addresses and ports
d)
Manages the state of network connections
e)
Provides a high-level interface for data encryption
36.
What responsibilities do clients have when using the Socket API?
a)
Establish a connection to the server
b)
Listen for incoming connections
c)
Send requests to the server
d)
Handle server responses
e)
Bind to a specific port to accept connections
37.
What responsibilities do servers have when using the Socket API?
a)
Listen for incoming connections
b)
Establish connections to clients
c)
Accept client connections
d)
Provide requested resources or services
e)
Bind to a specific port
38.
Which of the following are characteristics of the Stop-and-Wait ARQ protocol?
a)
Simple and easy to implement
b)
Low efficiency due to waiting for acknowledgment of each packet
c)
Can send multiple packets before receiving acknowledgment
d)
Suitable for low-error networks
e)
High throughput
39.
What are the advantages of the Go-Back-N ARQ protocol?
a)
Higher efficiency than Stop-and-Wait
b)
Can send multiple packets before needing acknowledgment
c)
Maintains a sliding window of packets
d)
Retransmits only erroneous or lost packets
e)
Reduces latency
40.
What are the limitations of the Go-Back-N ARQ protocol?
a)
Retransmits all packets following an error
b)
Higher bandwidth usage due to retransmissions
c)
More complex to implement than Stop-and-Wait
d)
Suitable for high-latency networks
e)
Requires large buffer size at the receiver
41.
What are the advantages of the Selective Repeat ARQ protocol?
a)
Retransmits only erroneous or lost packets
b)
Higher efficiency and throughput
c)
Requires smaller buffer size at the receiver
d)
Suitable for high-error networks
e)
Maintains individual acknowledgment for each packet
42.
What are the limitations of the Selective Repeat ARQ protocol?
a)
More complex to implement
b)
Requires larger buffer size at the receiver
c)
Lower efficiency than Go-Back-N
d)
Increased processing at both sender and receiver
e)
Suitable for low-error networks
43.
Which of the following steps are involved in the checksum calculation technique?
a)
Divide the data into equal segments
b)
Sum all the segments
c)
Perform bitwise AND on the segments
d)
Take the one's complement of the sum
e)
Append the checksum to the data
44.
How do you calculate the checksum at the sender side for the data unit 1001001110010011 using a 16-bit checksum?
a)
Sum the 16-bit words
b)
Perform bitwise XOR on the words
c)
Take the one's complement of the sum
d)
Append the checksum to the data
e)
Calculate the modulo-256 of the sum
45.
How do you verify the integrity of the received data using checksum?
a)
Add the received data and checksum
b)
Perform bitwise XOR on the data and checksum
c)
Take the one's complement of the result
d)
Check if the result is all ones
e)
Check if the result is all zeros
46.
How can delay impact the user experience in real-time video calls?
a)
Causes noticeable lag in conversation
b)
Leads to echo and feedback issues
c)
Results in unsynchronized audio and video
d)
Causes packet loss
e)
Improves video quality
47.
How can jitter impact the user experience in real-time video calls?
a)
Causes choppy audio
b)
Leads to video frame skipping
c)
Results in inconsistent playback
d)
Improves video resolution
e)
Increases latency
48.
How can packet loss impact the user experience in real-time video calls?
a)
Causes missing audio segments
b)
Leads to frozen video frames
c)
Results in degraded video quality
d)
Increases overall latency
e)
Enhances color depth
49.
Which of the following network enhancements could mitigate delay, jitter, and loss issues in a corporate teleconference system?
a)
Implement Quality of Service (QoS)
b)
Increase bandwidth capacity
c)
Use traffic shaping techniques
d)
Upgrade to a higher-speed internet connection
e)
Use unencrypted communication protocols
50.
What is the role of Quality of Service (QoS) in improving real-time video call performance?
a)
Prioritizes video and audio packets
b)
Reduces packet loss
c)
Manages network congestion
d)
Ensures consistent bandwidth for critical applications
e)
Decreases overall network security
51.
How do transmission times impact the efficiency and reliability of services like video streaming, voice calls, and email?
a)
Reduce lag in real-time services
b)
Increase buffering in video streaming
c)
Improve email delivery speed
d)
Cause delays in voice call transmission
e)
Enhance video quality
52.
How do bit quantities affect the efficiency and reliability of services like video streaming, voice calls, and email?
a)
Higher bit quantities improve video resolution
b)
Larger bit quantities increase voice call clarity
c)
Smaller bit quantities reduce email attachment sizes
d)
High bit quantities require more bandwidth
e)
Low bit quantities improve network speed
53.
How does network speed influence the efficiency and reliability of services like video streaming, voice calls, and email?
a)
Higher speeds reduce buffering in video streaming
b)
Increased speeds decrease voice call latency
c)
High network speed accelerates email delivery
d)
Low network speed improves data security
e)
Faster network speeds enhance overall service quality
54.
What are the impacts of digital transmission characteristics on video streaming?
a)
Faster transmission times reduce buffering
b)
Higher bit quantities improve video quality
c)
Increased network speed enhances streaming reliability
d)
Slow transmission times improve video compression
e)
Low bit quantities reduce streaming data usage
55.
What are the impacts of digital transmission characteristics on voice calls?
a)
High network speed reduces call latency
b)
Higher bit quantities enhance audio clarity
c)
Efficient transmission times minimize echo and delay
d)
Low bit quantities increase call quality
e)
Slow network speed improves call stability
56.
What are the impacts of digital transmission characteristics on email services?
a)
Faster transmission times speed up email delivery
b)
Higher bit quantities allow for larger attachments
c)
Increased network speed improves overall email efficiency
d)
Low bit quantities enhance email security
e)
Slow network speed reduces spam
57.
What are the main characteristics of the checksum method?
a)
Simple to implement
b)
Provides basic error detection
c)
Uses arithmetic sum of data segments
d)
Detects all single-bit errors
e)
More computationally intensive than CRC
58.
What are the main characteristics of the cyclic redundancy check (CRC) method?
a)
More complex than checksum
b)
Provides robust error detection
c)
Uses polynomial division of data segments
d)
Detects burst errors
e)
Less effective than checksum for small errors
59.
How does checksum compare to CRC in terms of error detection capabilities?
a)
Checksum detects all single-bit errors
b)
CRC detects burst errors
c)
Checksum provides stronger error detection
d)
CRC provides more robust error detection
e)
Both are equally effective
60.
What are the advantages of using CRC over checksum?
a)
More accurate error detection
b)
Ability to detect burst errors
c)
More suitable for high-noise environments
d)
Simpler to implement
e)
Less computationally intensive
61.
Which method would be more appropriate for real-time audio streaming applications, and why?
a)
Checksum due to simplicity
b)
CRC due to robustness
c)
Checksum due to lower computational load
d)
CRC due to better error detection in noisy environments
e)
CRC due to ability to detect burst errors
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