Module 8: Security in All-Optical Networks
45 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary distinction between workload and fault load?

  • Fault load is the normal operational load.
  • Fault load refers specifically to error modeling. (correct)
  • Workload is defined only for timesharing systems.
  • Workload represents abnormal conditions on the system.

Which of the following is NOT a characteristic considered in workload selection?

  • Cost Efficiency (correct)
  • Timeliness
  • Representativeness
  • Services Exercised

In comparing two identical systems with different CPUs, which metric is appropriate?

  • Response time
  • Memory usage
  • CPU instructions (correct)
  • Transactions per second

Why is MIPS not a suitable metric for comparing timesharing systems?

<p>It is only useful for CPU comparisons. (B)</p> Signup and view all the answers

Which option correctly identifies the system services involved in work/fault load testing?

<p>SUT and CUS determine the workload and metrics. (C)</p> Signup and view all the answers

What can propagate a crosstalk attack to other connections?

<p>High energy on one wavelength affecting another (A)</p> Signup and view all the answers

Which method is primarily used for detecting malfunctions related to power in optical communications?

<p>Power Detection (D)</p> Signup and view all the answers

What limitation is associated with the Power Detection technique?

<p>It fails to distinguish between different types of jamming attacks. (D)</p> Signup and view all the answers

What is a significant drawback of Optical Spectral Analyzers?

<p>They require substantial programming to analyze outputs. (B)</p> Signup and view all the answers

What characteristic makes the localization of a crosstalk attack difficult?

<p>The superimposition of disturbed signals (D)</p> Signup and view all the answers

What is essential for detecting attack signals in optical networks?

<p>Sophisticated optical monitoring techniques (C)</p> Signup and view all the answers

Which feature should an optical monitoring device be capable of measuring?

<p>Signal wavelength (C)</p> Signup and view all the answers

What type of attacks can Optical Spectral Analyzers detect?

<p>Attacks that affect the optical spectrum significantly (A)</p> Signup and view all the answers

What does the OS-Application interface provide?

<p>Services for applications to utilize (A)</p> Signup and view all the answers

How does fault injection contribute to system robustness evaluation?

<p>By allowing observation of system behavior under specified errors (D)</p> Signup and view all the answers

Which of the following is NOT a method of error type implementation?

<p>Directly modifying application code during execution (C)</p> Signup and view all the answers

What are the three dimensions along which an error model can be classified?

<p>Type, location, and timing (D)</p> Signup and view all the answers

What is the purpose of observing the system after inserting errors?

<p>To reveal how the system behaves in agitated conditions (A)</p> Signup and view all the answers

What can be a consequence of different OS services having varying failure characteristics?

<p>An influence on how applications behave during faults (D)</p> Signup and view all the answers

Which statement is true regarding errors in hardware components?

<p>They are often experienced as erroneous bit values. (A)</p> Signup and view all the answers

What is a primary goal of developing techniques to evaluate system robustness?

<p>To ensure correct operations in stressful conditions (B)</p> Signup and view all the answers

What is considered a significant challenge in developing an automatic Intrusion Response System (IRS)?

<p>Complete detection of intrusions (D)</p> Signup and view all the answers

Which area is NOT mentioned as an aspect for research in IRS development?

<p>User interface design (A)</p> Signup and view all the answers

Why are IRSs considered a trending research domain?

<p>Because of the challenges in response option selection (B)</p> Signup and view all the answers

What is a goal of conducting comprehensive research on IRS design?

<p>Creating an optimal automated IRS design (B)</p> Signup and view all the answers

Which of the following is a focus area for future IRS research?

<p>Adaptability (B)</p> Signup and view all the answers

What fundamental aspect regarding IRSs is emphasized for further exploration?

<p>Response option selection (B)</p> Signup and view all the answers

What is essential for achieving optimal automated IRS design?

<p>Comprehensive research (A)</p> Signup and view all the answers

Which outcome is NOT mentioned as a focus in the context of IRS development?

<p>Hardware scalability (D)</p> Signup and view all the answers

Which type of Intrusion Detection System specifically analyzes system calls and application logs?

<p>Host-Based Intrusion Detection System (C)</p> Signup and view all the answers

What is a significant advantage of using an Intrusion Detection System?

<p>It prevents any damage to the network. (A)</p> Signup and view all the answers

Which type of Intrusion Detection System combines various detection methods?

<p>Hybrid Intrusion Detection System (C)</p> Signup and view all the answers

What is a primary limitation of Intrusion Detection Systems?

<p>They cannot prevent attacks directly. (A)</p> Signup and view all the answers

How do Distributed Intrusion Detection Systems enhance network monitoring?

<p>By integrating multiple IDS that communicate with each other. (C)</p> Signup and view all the answers

What is one of the current challenges in deploying Intrusion Response Systems?

<p>Achieving high threat visibility through correct installation. (D)</p> Signup and view all the answers

Where is an optimal placement for a Network Intrusion Detection System?

<p>At choke points where traffic converges. (B)</p> Signup and view all the answers

What is the primary purpose of user authentication in network security?

<p>To provide identifying information for legitimate users (B)</p> Signup and view all the answers

What feature do modern application whitelisting tools enhance, in relation to Host-Based Intrusion Detection Systems?

<p>They are a newer version of HIDS/HIPS. (C)</p> Signup and view all the answers

What defines the effectiveness of an Intrusion Detection System (IDS)?

<p>The rate of false alarms and missed alarms (B)</p> Signup and view all the answers

Why is a protective shield, like a firewall, considered inadequate alone for prevention?

<p>It cannot block all malicious traffic without being too restrictive (B)</p> Signup and view all the answers

Which type of signatures are used when an IDS matches incoming packets against known attack patterns?

<p>Misuse-based signatures (D)</p> Signup and view all the answers

What is a critical component that enhances the functionality of an Intrusion Detection System?

<p>Timely response systems (B)</p> Signup and view all the answers

What is the role of anomaly-based signatures in an IDS?

<p>To detect patterns deviating from normal system behavior (C)</p> Signup and view all the answers

What is a potential limitation of user authentication and access control mechanisms?

<p>They may fail if passwords are compromised (C)</p> Signup and view all the answers

In the context of network attacks, what is the significance of response options for IDSs?

<p>They help respond appropriately based on the attack type (B)</p> Signup and view all the answers

Flashcards

Crosstalk Attack Propagation

A crosstalk attack can spread through a network, affecting multiple connections. The attack initially impacts one connection, but the power leakage from it can disturb other connections along the network path

Crosstalk Attack Localization

Finding the exact connection where the malicious attack originated becomes very difficult when crosstalk propagates.

Optical Monitoring Techniques

Sophisticated methods are needed to detect attack signals in optical networks.

Signal Wavelength

A characteristic property of an optical signal, the specific color of the light.

Signup and view all the flashcards

Signal Power

The strength or intensity of an optical signal.

Signup and view all the flashcards

Optical SNR

A measure of the signal-to-noise ratio in optical signals, indicating signal quality and noise levels.

Signup and view all the flashcards

Power Detection

Monitoring method to detect increases or decreases in signal power from the expected level. It's useful to find amplifier issues, but limited for in-band/out-of-band jamming attacks and competitors's gain attacks.

Signup and view all the flashcards

Optical Spectral Analyzers (OSAs)

Tools that display the spectrum of an optical signal but require complex analysis and significant programming to interpret and generate useful network alarms.

Signup and view all the flashcards

OS-Application Interface

The interface that OS provides to applications, offering services like s1, s2...ss.

Signup and view all the flashcards

OS-Driver Interface

The interface that OS provides to drivers, containing services like osx.1, osx.2... osx.k.

Signup and view all the flashcards

Fault Injection

The process of deliberately introducing errors into a system to test its robustness.

Signup and view all the flashcards

Error Model

A specification of the type of errors and how they are injected into a system for testing.

Signup and view all the flashcards

Error Type

The specific kind of fault, such as bit flips, parameter corruption, or random input.

Signup and view all the flashcards

Error Location

The place within a system where the error is introduced.

Signup and view all the flashcards

Error Timing

The specific time when an error is introduced.

Signup and view all the flashcards

Robust System

A system that functions correctly despite external stresses and agitations.

Signup and view all the flashcards

Workload vs. Fault Load

Workload represents the 'normal' system load, while fault load simulates errors or abnormal conditions. These loads might overlap when testing client-server systems.

Signup and view all the flashcards

Services Exercised

This aspect of workload selection considers which functions or features of a system are being tested. It's crucial to test a representative set of services for accurate results.

Signup and view all the flashcards

System Under Test (SUT)

The whole system being evaluated. This can be a complex software program, a network, or a physical device.

Signup and view all the flashcards

Component Under Study (CUS)

A specific part of the SUT that you are focusing on during testing. This might be a module, a function, or a specific piece of hardware.

Signup and view all the flashcards

Metrics

The specific measurements used to evaluate the SUT's performance. Examples include instructions executed (CPU), transactions completed (system), or network bandwidth.

Signup and view all the flashcards

Intrusion Detection System (IDS)

A system that identifies malicious activity on a network, either during or after an attack.

Signup and view all the flashcards

Network-Based Intrusion Detection System (NIDS)

Monitors network traffic for suspicious patterns across an entire network, typically placed at a choke point.

Signup and view all the flashcards

Host-Based Intrusion Detection System (HIDS)

Analyzes activity on a single device, including system calls, file changes, and application logs.

Signup and view all the flashcards

Hybrid Intrusion Detection System

Combines packet header and network traffic anomaly detection for a more comprehensive approach.

Signup and view all the flashcards

Distributed Intrusion Detection System

A network of interconnected IDSs that share information, enhancing monitoring and incident analysis.

Signup and view all the flashcards

What is the main disadvantage of IDSs?

They often cannot identify the source of an attack, only that an attack has occurred. This means they may lock down a network unnecessarily.

Signup and view all the flashcards

Effective Intrusion Detection Deployment

Ensuring that IDS technology is properly installed and optimized for maximum threat visibility.

Signup and view all the flashcards

Challenges to Intrusion Response Systems

Ensuring effective deployment, optimizing performance, managing false positives, and keeping up with evolving threats.

Signup and view all the flashcards

Intrusion Response System (IRS)

A system designed to detect and respond to security threats in a network, aiming to mitigate or prevent damage.

Signup and view all the flashcards

IRS Challenges

Developing a perfect IRS that completely prevents all intrusions is difficult; achieving optimal design and architecture requires extensive research.

Signup and view all the flashcards

IRS Research Areas

Ongoing research focuses on improving response options, reaction time, attack mitigation, alerts, and adaptable security strategies.

Signup and view all the flashcards

All-Optical Network

A network that utilizes light signals for data transmission, offering high speed and large bandwidth capabilities.

Signup and view all the flashcards

Crosstalk Attack

A malicious action where an attacker disrupts communication by interfering with signals on adjacent channels or connections within a network.

Signup and view all the flashcards

What's the purpose of user authentication?

User authentication is the process of verifying a user's identity before granting access to a system or network. It helps ensure only authorized individuals can access sensitive information and resources.

Signup and view all the flashcards

What are access control mechanisms?

Access control mechanisms are rules that define who has what privileges over different resources in a system. They determine which users can see, modify, or delete specific data.

Signup and view all the flashcards

Firewall

A firewall is a network security system that acts as a barrier between a computer network and the outside world. It inspects incoming and outgoing network traffic and blocks suspicious connections.

Signup and view all the flashcards

What's the difference between prevention and detection?

Prevention aims to stop attacks from happening in the first place, while detection focuses on identifying attacks that have already occurred.

Signup and view all the flashcards

What are misuse-based signatures?

Misuse-based signatures are patterns that match known attack techniques. They are like fingerprints for specific types of attacks.

Signup and view all the flashcards

What are anomaly-based signatures?

Anomaly-based signatures detect deviations from expected system behavior. They are used to identify new or unknown attack techniques.

Signup and view all the flashcards

Study Notes

Information Assurance and Security

  • Course title: Information Assurance and Security
  • Instructor: Felix L. Huerte Jr.
  • Institution: Laguna University, College of Arts, Sciences and Technology
  • Bachelor of Science in Computer Science

Module 8: Security Problems in All-Optical Networks (AON)

  • Optical fiber-based networks are dominant transport layer technology
  • Provide high bit rates for various applications
  • Appealing option for WANs, MANs, LANs
  • All-optical network (AON) mode avoids O-E-O conversion for increased efficiency
  • Employing WDM (wavelength division multiplexing)
  • Fiber bandwidth divided into multiple optical channels
  • Supports high data rates (10Gbps or higher)
  • Four significant security ramifications (Qian, Joshi, Tipper and Krishnamurthy, 2008):
    • Attacks, even short and infrequent can corrupt or compromise large amounts of data
    • Existing security protocols designed for slower networks may not be effective at high speed
    • Attacks compromise large amounts of data
    • Users may use inadequate protocols for slow networks in high-speed networks
  • Learning Outcomes:
    • Identify security problems in AON
    • Recognize attack types
    • Explain the robustness evaluation of Operating Systems
    • Evaluate the issues in intrusion detection
  • Possible Attacks (Qian, et al., 2008):
    • Traffic Analysis
    • Data Delay
    • Spoofing
  • All-optical network attack types: service disruption and tapping.
    • Service disruption attacks include fiber and optical amplifier attacks
    • Tapping includes eavesdropping and traffic analysis attacks

Module 9: Robustness Evaluation of Operating Systems

  • Operating systems are crucial for computational systems
  • Robustness evaluation involves (Qian, et al., 2008):
    • Defining objectives
    • Defining system model and target
    • Defining fault models and workloads
    • Defining robustness metrics

Module 10: Intrusion Response Systems

  • Distributed systems are crucial in technology infrastructure
  • Prevention through authentication and identification methods
  • Firewalls are preventative shields but not sufficient against all attacks
  • Intrusion Detection Systems (IDSs) detect incidents at runtime
  • Misuse-based & anomaly-based signatures are used to evaluate for
    • Network-based intrusions
    • Host-based intrusions
  • Common solution: Firewalls, access control, cryptography

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Information Assurance and Security PDF

Description

Explore the security challenges faced by all-optical networks in this quiz. Understand high-speed data transmission, security ramifications, and the effectiveness of current protocols in managing potential attacks. This assessment focuses on the implications of WDM technology in WANs, MANs, and LANs, ensuring you're equipped with essential knowledge in information assurance.

More Like This

Optical Networks Quiz
5 questions

Optical Networks Quiz

IllustriousResilience avatar
IllustriousResilience
SONET/SDH and Optical Networks Lecture
5 questions

SONET/SDH and Optical Networks Lecture

ProvenPeridot avatar
ProvenPeridot
Optical Networks (I) SONET/SDH Lecture 6 Quiz
5 questions

Optical Networks (I) SONET/SDH Lecture 6 Quiz

ProvenPeridot avatar
ProvenPeridot
All-Optical Networks Overview
24 questions

All-Optical Networks Overview

ObtainableMaxwell6714 avatar
ObtainableMaxwell6714
Use Quizgecko on...
Browser
Open
Browser
Browser