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WorksheetsElectronics Communication Quiz
Total questions: 71
Worksheet time: 46mins
Electronic communication means data communication over wireless system ONLY
True
False
Which one of the following describe a computer network interconnecting on an individual person's workspace?
CAN
LAN
PAN
WAN
What is one of the features of LAN network?
No geographic area
Confine to limited geographic area
What is the type of network where it is made up of a number of interconnected LANs?
BAN
CAN
PAN
WAN
Basic component of a computer network are client, server, media and network operating system.
True
False
____________ is a computer in a network shared by multiple users
Client
Media
Network Operating System
Server
Network media consist of
Wired
Wireless
Both wired and wireless
An operating system that supports running a program on more than one CPU is known as:
Multithreading
Multiprocessing
Multitasking
Real time
Where can operating systems be found?
Only on traditional desktop computers
On various devices, including smartphones, servers, and gaming consoles
Solely on web servers and supercomputers
Exclusively on video game consoles
In an operating system that supports ___________, a user can listen to music, browse the web, and work on a document at the same time.
Multiprocessing
Multithreading
Multitasking
Multimodal
In an operating system that permits more than one program to run concurrently, this feature is referred to as:
Multiprocessing
Multithreading
Multitasking
Real time
Which type of operating system allows two or more users to run programs simultaneously?
Multiprocessing
Multithreading
Multi-user
Real time
An operating system that allows more than one program to run concurrently but may not respond instantly is referred to as:
Multi-user
Multiprocessing
Multitasking
Real time
What is the primary role of an operating system (OS)?
Managing computer hardware and software resources
Creating and running computer programs
Maintaining security at the application level
Providing user interfaces for software programs
Which feature of an operating system allows it to execute multiple tasks concurrently, sharing the CPU's time and resources?
Multithreading
Multiprocessing
Multitasking
Multiprogramming
What does POST stand for in the context of computer booting?
Post-Operative System Test
Power-On Self-Testing
Preliminary Operational System Test
Primary Onboard System Test
What is the first software to run when a personal computer is powered on?
Operating system
Application software
BIOS firmware
Utility software
What is the primary function of POST in the computer boot-up sequence?
To diagnose and ensure proper functioning of hardware components
To load the operating system
To establish a network connection
To launch application software
What does BIOS stand for in the context of computer booting?
Basic Input Output Software
Binary Input Output System
Basic Input Output System
Binary Input Output Software
What is the initial step in the PC boot sequence, immediately after the computer is powered on?
Loading the operating system
POST (Power-On Self-Test)
Identifying the boot device
Checking for software updates
When a technician is checking for faults within a network cable, which OSI layer are they primarily working with?
Data Link Layer
Network Layer
Transport Layer
Physical Layer
What type of issues would a technician typically address when working within the OSI Physical Layer?
Software configuration errors
Routing table issues
Cable faults and physical connectivity
Firewall rule violations
What is the primary concern of the OSI Physical Layer when dealing with network cables and connectivity?
Data encryption
Signal modulation
Ensuring proper cable functionality
Network protocol compatibility
Which of the following is an example of a wired transmission medium commonly used in the Physical Layer?
Infrared
Bluetooth
Fiber optic cable
Wi-Fi
What role do connectors and cables play in the Physical Layer of a network?
Data routing
Error detection
Physical connectivity
Data compression
What is the equivalent of the OSI Transport layer in the TCP/IP model?
Application Layer
Internet Layer
Transport Layer
Link Layer
In the OSI model, the Session, Presentation, and Application layers are combined into one layer in the TCP/IP model. What is this combined layer called?
Application Layer
Session Layer
Internet Layer
Link Layer
The Physical and Data Link layers of the OSI model are often collectively referred to as which layer in the TCP/IP model?
Transport Layer
Internet Layer
Link Layer
Application Layer
If a target device is unreachable, which ICMP message type is often sent in response to a ping request?
ICMP echo request
ICMP destination unreachable
ICMP echo reply
ICMP time exceeded
In a ping process, what is an ICMP echo request used for?
To check if a network cable is functioning
To request information about the target device's hardware
To determine if a target device is reachable and responsive
To establish a secure connection with the target device
What is the primary purpose of sending a ping request to a target device?
To request a file transfer
To retrieve web page content
To test if the target device is reachable and operational
To initiate a video call
What is the parameter that is NOT displayed when the 'ipconfig' command is run in Command Prompt?
MAC Address
Subnet Mask
Default Gateway
DHCP Server
Which type of data transmission involves sending data in one direction only, without provision for reverse transmission?
Half Duplex Transmission
Full Duplex Transmission
Simplex Transmission
Bidirectional Transmission
Which transmission mode enables data to be sent and received simultaneously?
Half Duplex Transmission
Unidirectional Transmission
Full Duplex Transmission
Simplex Transmission
Which scenario represents an example of full-duplex transmission?
Radio broadcasting
Terminal-to-computer interaction
Television broadcasting
Computer-to-computer communication
Which scenario represents an example of full-duplex transmission?
Radio broadcasting
Terminal-to-computer interaction
Television broadcasting
Computer-to-computer communication
What is the primary purpose of a hub in a network?
Filtering data packets based on MAC addresses
Amplifying data signals for improved transmission
Broadcasting data frames to all connected devices
Directing data packets to specific devices
When a data packet arrives at a hub, what happens in terms of transmission?
It's broadcasted to all ports
It's directed to a specific port based on content
It's analyzed for security purposes
It's transmitted only to the originating device
In a network, what is the role of a switch?
Amplify incoming data signals
Broadcast data frames to all devices
Filter out unwanted data packets
Centralize communications among connected devices
How does a switch decide where to forward an incoming data packet?
Based on the originating device's IP address
By analyzing the contents of the packet
Using source and destination MAC addresses
By checking the packet's TTL field
What primary function does a router serve in computer networks?
Amplifying data signals for long-distance transmission
Broadcasting data packets to all connected devices
Forwarding data packets between different networks
Filtering out unwanted data frames
What role does an access point play in wireless networking?
It connects devices to a wired router through Ethernet cables
It amplifies the Wi-Fi signal for extended coverage
It creates a wireless local area network (WLAN) and projects a Wi-Fi signal
It acts as a central hub for wired and wireless connections
What does SNR stand for in the context of signal measurement?
Signal-to-Noise Reaction
Signal-to-Noise Rate
Signal-to-Noise Ratio
Signal-to-Noise Reflection
What does SNR measure?
The level of background noise
The level of desired signal
The difference between signal and noise levels
The frequency of the signal
Which formula is used to calculate SNR in decibels?
SNR(dB) = Psignal / Pnoise
SNR(dB) = Psignal - Pnoise
SNR(dB) = 10 * log10(Psignal / Pnoise)
SNR(dB) = Psignal * Pnoise
Given that the signal power (Psignal) is 30 dB and the noise power (Pnoise) is 20 dB, what is the SNR in dB using the simplified formula?
10 dB
30 dB
20 dB
50 dB
If the signal power (Psignal) is 50 dB and the noise power (Pnoise) is 30 dB, what is the SNR in dB using the simplified formula?
20 dB
80 dB
70 dB
60 dB
Given an SNR of 15 dB and the signal power (Psignal) of 25 dB, what is the noise power (Pnoise) in dB?
40 dB
10 dB
15 dB
25 dB
Given an SNR of 25 dB and the noise power (Pnoise) of 5 dB, what is the signal power (Psignal) in dB?
20 dB
30 dB
25 dB
5 dB
If the SNR is 12 dB and the signal power (Psignal) is 48 dB, what is the noise power (Pnoise) in dB?
60 dB
12 dB
36 dB
48 dB
What is the speed of Cat 6 unshielded twisted pair cable?
1 Mbps
100 Mbps
1000 Mbps
10000 Mbps
What is the speed of Cat 5 unshielded twisted pair cable?
4 Mbps
16 Mbps
100 Mbps
1000 Mbps
Which category of unshielded twisted pair cable is the most commonly used for Ethernet networks in home and office environments?
Cat 1
Cat 3
Cat 5
Cat 6
What is the maximum data transfer speed supported by Cat 6 unshielded twisted pair cable?
16 Mbps
100 Mbps
1000 Mbps
10,000 Mbps
Which type of network consists of a group of user-oriented PCs that operate as equals, sharing resources such as files and printers?
Local area network
Server based network
Wide area network
Peer to Peer network
Which server has the ability to handle all forms of application logic and connectivity found in client-server applications?
Print server
File server
High speed data server
Application server
Which of the following is NOT an advantage of peer-to-peer networking?
Speed
Ease of administration
Ease of sharing resources
Easy installation
Which of the following is NOT an advantage of server based networking?
Security management
User and group accounting
Ease of training
Fault tolerance
Which of the following is NOT an advantage of using a network printer?
Printing queue is centrally managed
No printing queue
Reduced capital and maintenance cost
Readily available for use on the network
What is the purpose of the DHCP server?
To provide storage for email
To translate URLs to IP address
To translate IPV4 addresses to MAC address
To provide an IP configuration information to hosts
DHCP (dynamic host configuration protocol) provides (a) to the client.
DHCP is used for
IPv6
IPv4
IPv4 & IPv6
None of the above
IP assigned for a client by DHCP server is
For a limited period
For a unlimited period
Not time dependent
None of the above
The first time a client restarted after Obtain An IP Address Automatically has been selected, what process does it go through before the IP address gets accepted?
DORA
ARDO
RADO
DARO
Which statement is correct regarding the operation of DHCP?
A DHCP client uses a ping to detect address conflicts.
A DHCP server uses a gratuitous ARP to detect DHCP clients.
If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict.
If an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administrator.
What is the destination IP address when an IPv4 host sends a DHCPDISCOVER message?
0.0.0.0
255.255.255.255
192.168.1.1
224.0.0.1
Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?
DHCPACK
DHCPREQUEST
DHCPOFFER
DHCPDISCOVER
What is DHCP? (give full definition)
What is the advantage of using DHCP?
What is DHCP scope?
List the 4 steps in configuring a DHCP scope
