One of the primary roles of the transport layer is to ensure _______ delivery of data packets.
- Fast
- In-order
- Reliable
- Secure
The transport layer is responsible for ensuring the reliable delivery of data packets. It uses mechanisms such as acknowledgment and retransmission to make sure data arrives at the destination without errors and in the correct order.
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.
To ensure that incoming packets on a specific port reach a particular server in a private network, administrators can set up _______ using NAT.
- Firewall Rules
- Load Balancing
- Port Forwarding
- Subnetting
Port Forwarding is a technique used to direct incoming network traffic on a specific port to a designated server or device within a private network. This is commonly achieved through NAT (Network Address Translation) configurations.
In an international online gaming tournament, players from around the world need to ensure minimal latency and packet loss. The effectiveness of this is largely dependent on which aspect of networking?
- Bandwidth
- Network Topology
- Quality of Service (QoS)
- Routing Protocol
Quality of Service (QoS) is crucial in this context. QoS ensures that the network can prioritize gaming traffic to minimize latency and packet loss, providing a better gaming experience for players.
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.