WorksheetsContent Section Worksheet Questions (Grade 14)
Total questions: 11
Worksheet time: 6mins
What is edge processing for image/video analytics (e.g., on an IP camera) and one advantage over sending all raw video to a central server?
Processing occurs on the device that captures the data, reducing bandwidth and latency by sending only results or compressed summaries
Processing means mirroring raw video to multiple central servers to improve redundancy
Edge processing is decoding video at the central server while cameras act only as sensors
It refers to encrypting video frames in transit so central servers can process them faster
Name three common image processing tasks performed in surveillance projects and the typical output each produces.
Motion detection producing a binary foreground mask or event triggers
Object detection producing bounding boxes or class labels per frame
Face recognition producing identity matches or feature embeddings
Color grading producing audio transcripts of speech
For a secure company network, mention at least three layers or controls you would include.
Network segmentation with VLANs and firewalls between zones
Multi-factor authentication for administrative access
Plaintext FTP for backups to simplify operations
Intrusion detection/prevention with centralized logging
Regular patch management and configuration hardening
Describe how VLAN trunking works between switches and why tagging (e.g., 802.1Q) is needed.
Frames are tagged with a VLAN ID per the 802.1Q standard so multiple VLANs can share a single trunk link
VLAN trunking increases link speed by aggregating unused ports without tagging
Tagging assigns IP addresses to frames so routing can happen across trunks
VLAN trunking encrypts traffic between switches; tagging provides the encryption keys
Give a brief plan (bullet points) for carrying out a small, lawful lab project that demonstrates secure remote file transfer using SFTP and SSH keys, including key safety and documentation steps.
Generate an SSH key pair with a strong passphrase and restrict the server to key-based authentication
Use password-only FTP to simplify setup and demonstrate file transfer
Verify host keys, use SFTP for transfers, and document commands and configurations used
Store private keys securely, rotate/revoke keys when needed, and record test results and screenshots
Explain the concept of Spanning Tree Protocol (STP) and its role in preventing loops in a network with multiple switches.
STP is used to encrypt data between switches to enhance security
STP increases the speed of data transmission by creating multiple active paths
STP assigns VLAN IDs to each switch to manage traffic flow
STP allows switches to communicate and block redundant paths to prevent broadcast storms
What are the benefits of using a Content Delivery Network (CDN) for distributing web content?
CDNs reduce latency and improve load times by caching content closer to users
CDNs encrypt all data in transit to prevent unauthorized access
CDNs are primarily used for data backup and recovery purposes
CDNs increase the size of the content being delivered to enhance user experience
Describe the purpose of Network Address Translation (NAT) and how it enhances security in a private network.
NAT encrypts all outgoing traffic to secure data from interception
NAT is used to assign static IP addresses to devices within a network
NAT increases the speed of data transfer by compressing IP packets
NAT allows multiple devices on a private network to share a single public IP address, hiding internal IPs from external networks
What is the function of the Rapid Spanning Tree Protocol (RSTP) and how does it improve upon the original Spanning Tree Protocol (STP)?
RSTP encrypts data between switches to enhance security
RSTP is used to create multiple VLANs on a single switch
RSTP provides faster convergence times compared to STP by quickly transitioning ports to forwarding state
RSTP increases the number of active paths in a network to improve redundancy
What are the key differences between edge computing and traditional cloud computing in the context of data processing?
Edge computing processes data closer to the source, reducing latency, while cloud computing centralizes processing
Edge computing requires more bandwidth than cloud computing
Edge computing is less secure than cloud computing due to its decentralized nature
Edge computing is primarily used for data storage, while cloud computing focuses on processing
How does Quality of Service (QoS) impact network performance, and what are its primary functions?
QoS prioritizes certain types of traffic to ensure reliable performance for critical applications
QoS is used to increase the bandwidth of a network by aggregating multiple connections
QoS is primarily concerned with data backup and recovery in a network
QoS encrypts all data packets to enhance security during transmission
