Which of the following techniques is used to distribute traffic evenly across multiple servers to avoid overloading a single server?
A Traffic shaping
B Network routing
C Load balancing
D Network segmentation
Load balancing distributes incoming network traffic across multiple servers, preventing any one server from being overwhelmed. This improves the availability and responsiveness of services by ensuring more efficient resource utilization.
What is the primary goal of network performance optimization?
A Reducing network costs
B Increasing packet loss
C Maximizing throughput
D Increasing latency
Network performance optimization aims to maximize throughput by improving data transfer speeds, reducing congestion, and ensuring efficient utilization of available network resources, which helps in achieving optimal network performance.
Which of the following is a key aspect of cybersecurity in networking to protect against unauthorized access?
A Data encryption
B Network segmentation
C Load balancing
D Firewall configuration
Firewalls are critical in cybersecurity as they monitor and control incoming and outgoing network traffic based on predefined security rules, blocking unauthorized access while allowing legitimate communication.
What type of attack aims to overwhelm a network’s resources by flooding it with excessive traffic?
A DDoS attack
B Spoofing attack
C Man in the middle attack
D Phishing attack
A Distributed Denial of Service (DDoS) attack floods a network with a large volume of traffic, overwhelming its resources and causing disruption in services. It often involves multiple compromised systems to generate the attack.
Which of the following methods is used to reduce latency and improve the speed of data transfer in a network?
A Data fragmentation
B Data compression
C Packet filtering
D Encryption
Data compression reduces the size of data before it is transmitted over a network. By sending smaller packets, it reduces latency and increases the speed of data transfer, improving network efficiency and performance.
What is the role of Quality of Service (QoS) in network management?
A Encrypt data packets
B Assign IP addresses
C Compress data for transmission
D Manage network traffic
Quality of Service (QoS) helps manage network traffic by prioritizing critical data and controlling bandwidth allocation. It ensures that essential applications receive the necessary resources, improving overall network performance.
Which of the following network protocols is primarily used for securing communication between devices over the internet?
A TCP
B ARP
C IPsec
D DNS
IPsec (Internet Protocol Security) is a suite of protocols used to secure internet communications by authenticating and encrypting each IP packet in a communication session, ensuring privacy and data integrity.
What is the main purpose of Network Address Translation (NAT) in networking?
A Assign unique IP addresses
B Translate private IPs to public IPs
C Encrypt data for transmission
D Route packets across networks
NAT is used to translate private IP addresses within a local network into a single public IP address, allowing multiple devices in a private network to access the internet using the same public IP.
Which of the following is a method used in load balancing to ensure optimal performance across servers?
A VLAN segmentation
B Traffic filtering
C Round robin DNS
D Packet sniffing
Round robin DNS is a load balancing method that distributes incoming traffic across multiple servers by rotating the order of IP addresses returned for each DNS query, ensuring even distribution of traffic among servers.
Which of the following techniques improves network security by limiting the potential damage from compromised systems?
A Network segmentation
B VPN usage
C Data encryption
D Load balancing
Network segmentation divides a network into smaller, isolated segments to limit access and contain potential security breaches. If one segment is compromised, it reduces the risk of the attack spreading across the entire network.
What is the purpose of a Virtual Private Network (VPN) in enhancing network security?
A Assigning IP addresses
B Monitoring network traffic
C Compressing data for faster transfer
D Creating a secure tunnel for data
A VPN creates a secure, encrypted tunnel over the internet, allowing users to transmit data safely even over unsecured networks. It ensures privacy and protects data from interception or unauthorized access.
Which of the following is a common strategy for improving network security and performance in a corporate environment?
A Using open source software
B Limiting bandwidth usage
C Implementing a VPN
D Using public IP addresses
A VPN provides secure communication by encrypting data as it travels across a network. It ensures privacy and security, making it an essential tool for corporate environments, especially for remote employees accessing company resources.
What is the primary role of an Intrusion Detection System (IDS) in network security?
A Monitor and detect suspicious activities
B Prevent unauthorized access
C Encrypt sensitive data
D Assign IP addresses
An IDS monitors network traffic for signs of suspicious activities or potential threats. It alerts administrators about potential security breaches, enabling quick responses to unauthorized access attempts or other malicious activities.
Which of the following techniques is used to ensure that data is transmitted in the correct order and without errors in a network?
A Flow control
B Error correction
C Load balancing
D Packet switching
Error correction ensures that data transmitted over the network is free from errors and is delivered in the correct order. Techniques like retransmission of corrupted packets and checksums help maintain data integrity during transmission.
Which of the following is commonly used to measure the overall efficiency of a network in terms of data throughput?
A Throughput
B Bandwidth
C Latency
D Packet loss
Throughput refers to the rate at which data is successfully transmitted from one point to another in a network. It measures the efficiency of the network in terms of data transfer speed, which impacts overall network performance.