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WorksheetsNetworking Quiz
Total questions: 92
Worksheet time: 49mins
What is the primary function of a router?
Connect devices within a LAN
Filter network traffic based on IP addresses
Forward data between different networks
Assign IP addresses dynamically
Which device operates at the Data Link Layer (Layer 2) of the OSI model?
Router
Switch
Hub
Firewall
How many bits are in an IPv6 address?
32
64
128
256
Which protocol is responsible for dynamically assigning IP addresses?
DNS
DHCP
FTP
HTTP
What does "SSD" stand for in storage devices?
Solid-State Drive
Serial Storage Device
Secure System Disk
Secondary Storage Drive
Which layer of the OSI model handles data encryption and compression?
Application
Presentation
Session
Transport
What is the maximum decimal value of an 8-bit binary number?
127
255
256
1024
Which port is used by the Simple Mail Transfer Protocol (SMTP)?
21
25
53
80
What is the purpose of a firewall?
Assign IP addresses
Block unauthorized network access
Connect devices within a LAN
Forward data between different networks
Which statement about UDP is correct?
It guarantees data delivery
It uses a three-way handshake
It is connectionless
It operates at the Network layer
Which devices are used to extend network connectivity? (Select all that apply)
Switch
Hub
Modem
RAM
Which statements about DHCP are true? (Select all that apply)
Assigns static IP addresses permanently
Uses a lease system for IP allocation
Requires manual configuration for each device
Simplifies IP management in large networks
What are characteristics of ROM? (Select all that apply)
Volatile memory
Stores BIOS firmware
Data persists after power loss
Faster than RAM
Which layers are part of the TCP/IP model? (Select all that apply)
Application
Physical
Internet
Transport
Which protocols use TCP? (Select all that apply)
HTTP
DNS (for zone transfers)
FTP
Video streaming
What are valid IPv4 address components? (Select all that apply)
192.168.1.1
256.0.0.1
172.16.254.3
0.0.0.0
Which statements about MAC addresses are correct? (Select all that apply)
Globally unique
48 bits in length
32 bits in length
Used for IP addressing
A hub operates at the Network layer (Layer 3).
True
False
The Transport layer ensures data reaches the correct application using port numbers.
True
False
All digital systems are binary.
True
False
A dynamic IP address can never change once assigned.
True
False
The Physical layer defines electrical specifications for cables.
True
False
Vector graphics lose quality when scaled up.
True
False
DNS servers must always use static IP addresses.
True
False
The subnet mask 255.255.255.0 indicates a Class A network.
True
False
UDP is preferred for real-time applications like VoIP.
True
False
ASCII uses 8 bits to represent all characters.
True
False
Explain the difference between a switch and a hub.
A switch operates at Layer 2 and uses MAC addresses, while a hub broadcasts to all ports.
A switch broadcasts to all ports, while a hub uses MAC addresses.
A switch and a hub both operate at Layer 3.
A switch and a hub both use IP addresses.
Why is IPv6 adoption necessary?
IPv6 is faster than IPv4.
IPv6 provides more address space than IPv4.
IPv6 is cheaper to implement than IPv4.
IPv6 is only used for private networks.
Describe the three-way handshake in TCP.
SYN, SYN-ACK, ACK
ACK, SYN, SYN-ACK
SYN, ACK, SYN-ACK
SYN-ACK, SYN, ACK
What is the role of a gateway in a network?
A gateway forwards data between different networks.
A gateway assigns IP addresses to devices.
A gateway encrypts data for security.
A gateway compresses data for transmission.
How does parity checking detect errors?
By using checksums.
By adding an extra bit to make the number of 1s even or odd.
By encrypting the data.
By compressing the data.
List three advantages of SSDs over HDDs.
Faster speed, less power consumption, more durability.
More storage capacity, cheaper, more durable.
Slower speed, more power consumption, less durability.
More storage capacity, slower speed, less durability.
Define "ephemeral port" and provide an example of its use.
A temporary port used for short-lived connections, such as in client-server communication.
A permanent port used for long-lived connections, such as in web hosting.
A temporary port used for secure connections, such as in VPNs.
A permanent port used for secure connections, such as in HTTPS.
The TCP/IP model combines which OSI layers?
Physical and Data Link
Network and Transport
Application and Presentation
No separate Physical layer
Which protocol is often used for video streaming due to its lower latency?
TCP
HTTP
UDP
FTP
What is the maximum octet value in an IP address?
256
255
254
253
MAC addresses are assigned by manufacturers but can sometimes be:
Deleted
Modified
Encrypted
Ignored
What layer do hubs operate at in the OSI model?
Data Link
Physical
Network
Transport
Port numbers direct data to specific applications. Which port is commonly used for web browsers?
21
25
80
110
Digital systems can use non-binary encodings. Which of the following is an example?
Binary
Ternary
Quaternary
Hexadecimal
Dynamic IPs change based on what factor?
DHCP lease expiration
MAC address
Subnet mask
DNS server
What does the Physical layer define in networking?
Software protocols
Hardware aspects
User interfaces
Data encryption
Vector graphics use mathematical paths and retain quality when:
Compressed
Scaled
Printed
Converted
Which of the following is a Class C subnet mask?
255.0.0.0
255.255.255.0
255.255.0.0
255.255.255.255
What is the advantage of using UDP for real-time applications?
High reliability
Low latency
Error correction
Data encryption
Standard ASCII uses how many bits?
6 bits
7 bits
8 bits
9 bits
What is the purpose of a gateway in networking?
Connects local networks to external networks
Encrypts data
Manages IP addresses
Provides DNS services
What do parity bits check in data transmission?
Data speed
Number of 1s
Data size
Data format
What are ephemeral ports used for?
Server-side communication
Client-side communication
Data encryption
Network management
Which network type allows specific external users limited access to internal resources?
Intranet
Extranet
PAN
WAN
What is the primary role of a NIC (Network Interface Controller)?
Encrypt data
Connect a device to a network
Route traffic between subnets
Assign IP addresses
Which protocol operates at the Application layer of the OSI model?
IP
TCP
HTTP
ARP
What is the main advantage of using static IP addresses?
Easier management
Reduced cost
Permanent network identification
Automatic configuration
Which layer of the OSI model is responsible for logical addressing (e.g., IP addresses)?
Physical
Data Link
Network
Transport
What is the default port number for DNS?
21
25
53
80
Which storage type is typically used for BIOS firmware?
RAM
SSD
ROM
HDD
Which device operates at the Physical layer (Layer 1)?
Router
Switch
Hub
Firewall
What does the subnet mask 255.255.0.0 indicate?
Class A network
Class B network
Class C network
Class D network
Which protocol is connectionless and does not guarantee delivery?
TCP
UDP
FTP
HTTP
Which statements about Intranet are true? (Select all that apply)
Accessible only to internal users
Uses public IP addresses
Shares resources within an organization
Requires external authentication
What are functions of the Presentation layer (Layer 6)? (Select all that apply)
Data encryption
Error detection
Data compression
Port numbering
Which are valid IPv4 private address ranges? (Select all that apply)
10.0.0.0 – 10.255.255.255
172.16.0.0 – 172.31.255.255
192.168.0.0 – 192.168.255.255
169.254.0.0 – 169.254.255.255
Which devices use MAC addresses for communication? (Select all that apply)
Router
Switch
Hub
NIC
What are characteristics of UDP? (Select all that apply)
Connection-oriented
Low latency
No error recovery
Uses port numbers
Which statements about parity bits are correct? (Select all that apply)
Detect multi-bit errors
Add redundancy to data
Correct single-bit errors
Used in ASCII encoding
Which are advantages of vector graphics over raster graphics? (Select all that apply)
What are valid uses of ROM? (Select all that apply)
Storing operating system files
Holding BIOS firmware
Temporary data caching
Preserving configuration settings
Which protocols are associated with email services? (Select all that apply)
SMTP
FTP
IMAP
SNMP
Which layers are absent in the TCP/IP model compared to the OSI model? (Select all that apply)
Session
Presentation
Transport
Network
Extranets require users to be physically within the organization’s premises.
True
False
A Class C network supports up to 254 hosts per subnet.
True
False
All digital systems must use binary encoding.
True
False
The Data Link layer is responsible for routing packets across networks.
True
False
HTTP is a secure protocol by default.
True
False
A dynamic IP address can be reused by another device after its lease expires.
True
False
The MAC address "00:1A:2B:3C:4D:5E" is globally unique.
True
False
The Physical layer defines frame formats for data transmission.
True
False
ASCII uses 7 bits to represent 128 characters.
True
False
A subnet mask of 255.255.255.128 creates subnets with 126 usable host addresses.
True
False
Which layer handles encryption, compression, and data formatting?
Layer 4
Layer 5
Layer 6
Layer 7
What is the purpose of 169.254.x.x addresses?
Public addresses
Private addresses
Link-local addresses
Broadcast addresses
Which devices use MAC addresses?
Routers
Switches
Hubs
NICs
What is a characteristic of UDP?
Connection-oriented
Low-latency
Uses streams
High overhead
What is the function of parity in data transmission?
Increases speed
Adds redundancy
Reduces noise
Enhances encryption
What is true about vector graphics?
Use pixels
Scale without quality loss
Use bitmaps
Are resolution-dependent
What is the role of ROM in a computer system?
Temporary data storage
Stores firmware and settings
Increases processing speed
Enhances graphics
Which protocols are used for sending and receiving emails?
HTTP and HTTPS
FTP and SFTP
SMTP and IMAP
POP3 and Telnet
What layers does TCP/IP combine?
Network and Data Link
Session, Presentation, and Application
Physical and Data Link
Transport and Network
What is the function of an extranet?
Internal communication
Remote access via authentication
Local network management
Data encryption
What is the primary function of switches in a network?
Direct traffic to specific devices (MAC-based)
Broadcast traffic to all devices
Assign IP addresses
Encrypt data
How do DHCP leases help in network management?
They provide permanent IP addresses
They ensure IPs are temporary, allowing dynamic reallocation
They encrypt data for security
They increase network speed
