What is the main advantage of IPv6 over IPv4 in terms of addressing capacity?
- IPv6 allows backward compatibility with IPv4 addresses.
- IPv6 offers faster data transmission speeds.
- IPv6 provides 64-bit addresses, increasing the number of available IP addresses to a virtually unlimited quantity.
- IPv6 uses a more compact addressing format.
IPv6 provides 128-bit addresses, which significantly expand the address space to an almost unlimited number of unique addresses. This is crucial to accommodate the growing number of devices and the Internet of Things (IoT).
A device's _______ address remains constant even if its IP address changes within a network.
- DHCP
- DNS
- IP
- MAC
A device's MAC (Media Access Control) address is a unique hardware address assigned to the network card and remains constant, even if the device's IP address changes within a network due to dynamic addressing from DHCP.
Which transport layer protocol is considered connection-oriented and ensures reliable data delivery?
- HTTP (Hypertext Transfer Protocol)
- IP (Internet Protocol)
- TCP (Transmission Control Protocol)
- UDP (User Datagram Protocol)
TCP (Transmission Control Protocol) is a connection-oriented protocol that ensures reliable data delivery. It establishes a connection between two devices, performs error checking, and retransmits lost or corrupted data to guarantee delivery.
A company wants to set up a network where each computer is connected to every other computer, allowing for maximum redundancy. Their primary concern is that the network should not fail if any single connection is broken. Which topology should they consider?
- Bus
- Mesh
- Ring
- Star
The Mesh topology is ideal for maximum redundancy and fault tolerance. In a Mesh network, every device is connected to every other device, which ensures that even if one connection is broken, data can still flow through alternative paths.
A company is sharing sensitive files with another organization. They want to ensure the data is encrypted during transfer. While they have traditionally used FTP, they now need a more secure version. What should they consider?
- FTPS
- HTTP
- SFTP
- TFTP
The company should consider SFTP (SSH File Transfer Protocol). SFTP is a secure version of FTP that encrypts data during transfer. It uses SSH (Secure Shell) for secure authentication and data encryption, making it suitable for transferring sensitive files over the network.
What protocol is typically used by web browsers to retrieve web pages from servers?
- FTP
- HTTP
- IP
- TCP
HTTP (Hypertext Transfer Protocol) is the protocol used by web browsers to retrieve web pages from web servers. It defines how data is formatted and transmitted over the internet.
How does a switch differentiate from a hub in terms of data transmission?
- A switch broadcasts data to all connected devices.
- A switch forwards data based on IP addresses.
- A switch forwards data based on MAC addresses.
- A switch sends data to all devices except the source.
A switch operates at the data link layer (Layer 2) of the OSI model and uses MAC addresses to make forwarding decisions. It forwards data only to the specific device associated with the destination MAC address, making it more efficient than a hub.
In which topology is each device connected to a central hub or switch?
- Bus
- Mesh
- Ring
- Star
Star Topology is a network layout where each device is directly connected to a central hub or switch. It's a common choice in local area networks (LANs) as it provides easy management and fault isolation.
Which system is specifically designed to detect malicious activities or policy violations in a network?
- Firewall
- IDS
- IPS
- Router
IDS (Intrusion Detection System) is a security mechanism designed to monitor network traffic and identify potential threats or policy violations. It can trigger alerts or take actions based on predefined rules or anomalies detected in the network.
In a frame structure, what is the main purpose of the preamble field?
- Data encryption
- Delimiting frames
- Error checking
- Synchronization
The main purpose of the preamble field in a frame is to provide synchronization between sender and receiver. It consists of a specific bit pattern that helps the receiving device identify the start of a frame and synchronize its clock with the sender's clock.