Which type of network connects devices within a small geographic area, such as a home or office?
A MAN
B PAN
C LAN
D WAN
A Local Area Network (LAN) connects devices within a small area, like a home or office. It typically offers high speed communication between devices and allows resource sharing, such as printers and files.
Which technology allows for wireless communication over long distances in cellular networks?
A 4G
B Bluetooth
C Ethernet
D Wi Fi
4G is a cellular communication technology that provides high speed internet access over long distances, allowing mobile devices to communicate wirelessly at fast speeds across large areas, including cities and rural regions.
Which network topology connects each device to a central hub or switch?
A Mesh
B Ring
C Bus
D Star
In a star topology, each device is connected to a central hub or switch. This makes it easy to troubleshoot, as issues are usually isolated to specific devices, and it provides a more reliable network design.
Which type of network spans a large geographical area, connecting devices across cities, countries, or continents?
A MAN
B WAN
C PAN
D LAN
A Wide Area Network (WAN) connects devices over large geographical areas, such as across cities, countries, or even continents. The internet itself is an example of a WAN, connecting networks globally.
Which protocol is used to assign IP addresses to devices dynamically in a network?
A FTP
B DNS
C DHCP
D SMTP
The Dynamic Host Configuration Protocol (DHCP) dynamically assigns IP addresses to devices on a network. This helps simplify network administration by automating the process of IP address assignment.
Which of the following is the primary function of a router in a network?
A Routing packets
B Assigning IPs
C Switching data
D Filtering traffic
A router is responsible for forwarding data packets between different networks. It examines the destination IP address of each packet to determine the best path for it to reach its destination.
What is the primary purpose of the OSI model in networking?
A Defining protocols
B Routing packets
C Assigning IP addresses
D Standardizing communication
The OSI (Open Systems Interconnection) model standardizes networking functions into seven layers, providing a conceptual framework that helps in understanding how different networking protocols interact to enable communication between devices.
Which type of network connects devices within a metropolitan area, such as a city or campus?
A LAN
B MAN
C PAN
D WAN
A Metropolitan Area Network (MAN) spans a city or large campus. It connects multiple LANs and provides high speed communication within a localized region, often used by organizations to link different buildings.
What type of address is used at the Data Link layer to uniquely identify devices on a local network?
A MAC address
B DNS address
C Port number
D IP address
A MAC (Media Access Control) address is a unique identifier assigned to each network interface card (NIC). It is used at the Data Link layer to ensure that data is correctly transmitted to the intended device on a local network.
Which network device is used to extend the range of a network by forwarding traffic between devices?
A Switch
B Router
C Repeater
D Hub
A repeater amplifies or regenerates signals in a network to extend the range of communication. It is particularly useful in large networks where signals weaken over long distances, ensuring reliable data transmission.
Which of the following protocols is responsible for securing communications on the internet by encrypting data?
A IP
B SMTP
C FTP
D SSL/TLS
SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are protocols used to encrypt data transmitted over the internet, ensuring secure communication between web servers and clients by preventing unauthorized access to sensitive information.
Which device is used to connect multiple networks and route data between them using IP addresses?
A Hub
B Router
C Modem
D Switch
A router connects multiple networks, such as local area networks (LANs) or wide area networks (WANs), and forwards data packets between them. It uses IP addresses to determine the best path for data transmission.
What does the term ‘bandwidth’ refer to in networking?
A Data transfer rate
B Network congestion
C Signal strength
D Packet loss
Bandwidth refers to the maximum rate at which data can be transmitted over a network. It is typically measured in bits per second (bps) and determines how much data can be transferred in a given time.
Which of the following technologies is commonly used to provide internet access over cellular networks?
A Ethernet
B Bluetooth
C 3G
D Wi Fi
3G is a cellular technology used to provide mobile internet access. It allows devices such as smartphones to connect to the internet over cellular networks, offering higher speeds than older technologies like 2G.
Which of the following describes a function of a firewall in network security?
A Assigning IP addresses
B Encrypting data
C Blocking unauthorized access
D Routing traffic
A firewall is a security device that monitors and filters incoming and outgoing network traffic. It prevents unauthorized access to or from a private network, protecting it from potential security threats.