Which network technology allows multiple devices within a private network to share a single public IP address for internet access?
A NAT
B VPN
C DHCP
D DNS
Network Address Translation (NAT) allows multiple devices in a private network to share a single public IP address when accessing the internet. This helps conserve IP address space and enhances security by hiding internal IPs.
Which of the following wireless technologies is primarily used for short range communication, typically up to 100 meters?
A Wi Fi
B 5G
C Bluetooth
D Zigbee
Bluetooth is designed for short range communication, typically up to 100 meters. It is commonly used for connecting peripherals like headphones, speakers, and keyboards to devices like smartphones and computers.
In packet switching, how is data transmitted over a network?
A Through dedicated channels
B As fixed size packets
C As one continuous stream
D Through circuit setup
In packet switching, data is divided into small packets, each of which can take a different route to the destination. This allows for more efficient use of network resources and helps with fault tolerance.
Which OSI layer is responsible for addressing and routing data packets across networks?
A Data Link
B Transport
C Network
D Application
The Network layer (Layer 3) is responsible for routing data packets between different networks. It uses logical addressing (such as IP addresses) to determine the best path for data transmission across interconnected networks.
What does DNS (Domain Name System) primarily do in a network?
A Resolves IP addresses
B Encrypts data
C Assigns IP addresses
D Manages routing tables
DNS (Domain Name System) translates human readable domain names (like www.example.com) into IP addresses, allowing devices to locate and communicate with each other on the internet without needing to remember numeric addresses.
Which technology is used to provide high speed internet access over long distances, such as in cellular networks?
A Fiber optic
B Ethernet
C Wi Fi
D 5G
5G is the latest cellular network technology, providing high speed internet access over large areas. It offers faster speeds, lower latency, and increased capacity, making it ideal for mobile applications and the Internet of Things (IoT).
Which network protocol automatically assigns IP addresses to devices within a network?
A FTP
B DHCP
C DNS
D ICMP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network, simplifying network configuration by dynamically providing devices with necessary configuration details such as IP address, subnet mask, and default gateway.
Which type of network topology connects all devices to a central device, forming a star like structure?
A Mesh
B Bus
C Ring
D Star
A star topology connects all devices to a central hub or switch. This setup simplifies network management and troubleshooting since each device is connected directly to the central point, making it easier to isolate problems.
Which protocol provides secure communication over a computer network by encrypting data exchanged between devices?
A FTP
B SNMP
C HTTPS
D HTTP
HTTPS (HyperText Transfer Protocol Secure) encrypts data between a web browser and server, ensuring that sensitive information, such as passwords or credit card details, is securely transmitted over the internet without being intercepted.
What is the main purpose of load balancing in a network?
A To compress data
B To distribute traffic
C To encrypt data
D To route packets
Load balancing distributes network traffic across multiple servers, ensuring that no single server becomes overwhelmed. This improves the reliability, performance, and availability of services by spreading the workload evenly.
What is the function of a MAC address in a network?
A To route data packets
B To assign IP addresses
C To encrypt data
D To identify devices on a local network
A MAC (Media Access Control) address is a unique identifier assigned to network interfaces. It operates at the Data Link layer and ensures that data is delivered to the correct device within a local area network (LAN).
Which of the following is a key advantage of using SDN (Software Defined Networking)?
A Manual configuration
B Increased hardware dependency
C Centralized network management
D Static network protocols
SDN (Software Defined Networking) centralizes the control of network devices, allowing administrators to programmatically manage, monitor, and configure the entire network from a single software interface, improving flexibility and automation.
Which of the following types of addressing is used by devices in a local network to identify each other?
A MAC address
B IP address
C Domain name
D Subnet mask
A MAC address is used by devices within a local network to identify themselves at the Data Link layer. It is a unique identifier assigned to the network interface card (NIC) of each device.
Which of the following is the primary function of network address translation (NAT)?
A Assign public IPs
B Encrypt network traffic
C Translate private IPs to public
D Route data packets
NAT (Network Address Translation) allows multiple devices on a local network to share a single public IP address when accessing the internet. It modifies the source IP address in packets to a public IP for routing.
Which of the following best describes the role of a gateway in a network?
A Connect different networks
B Manage local traffic
C Assign IP addresses
D Encrypt data packets
A gateway is a device that connects different types of networks, allowing them to communicate with each other. It often translates between different protocols or network architectures, facilitating data flow between diverse systems.