Mixed Deck — All CTE Topics Flashcards
100 cards from real CTE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 20 Mixed Deck — All CTE Topics flashcards as text
In designing a telecom data center network, what is the primary advantage of a spine-leaf topology over a traditional three-tier (core-distribution-access) topology?
Answer: It provides predictable, low-latency east-west traffic paths with a maximum of two hops between any two servers
Spine-leaf ensures any server can reach any other server in exactly two hops (leaf-to-spine-to-leaf), providing consistent low latency for the east-west traffic dominant in cloud-native telecom.
Which type of cryptographic attack specifically targets the handshake process in TLS connections used to secure telecom management interfaces?
Answer: BEAST (Browser Exploit Against SSL/TLS)
BEAST exploits a vulnerability in TLS 1.0's CBC mode cipher implementation during the handshake to decrypt encrypted data.
What is change management in CTE technology?
Answer: A structured process for evaluating and implementing changes safely
IT change management ensures changes are evaluated, approved, tested, and implemented in a controlled manner.
Which quality management tool is BEST used to identify the root cause of repeated network outages during a project?
Answer: Fishbone (Ishikawa) diagram
A fishbone diagram systematically explores all possible causes of a problem by categorizing potential root causes.
Which security architecture principle requires that every access request in a telecom network be authenticated and authorized regardless of network location?
Answer: Zero Trust Architecture
Zero Trust Architecture operates on 'never trust, always verify,' eliminating implicit trust based on network location or IP address.
Which protocol is used by network elements in a telecom architecture to export flow-level data for traffic analysis and capacity planning?
Answer: NetFlow / IPFIX
NetFlow (and its standardized form IPFIX) exports metadata about IP flows from routers and switches, enabling detailed traffic analysis and capacity planning.
Which project management approach is MOST suitable for a telecom R&D initiative with highly uncertain requirements?
Answer: Agile/Scrum
Agile/Scrum's iterative approach accommodates evolving requirements and rapid feedback loops, ideal for uncertain R&D environments.
During a security audit, an examiner finds that network engineers share a single privileged account for router configuration. Which control would BEST remediate this risk?
Answer: Implement TACACS+ with individual user accounts and command authorization
TACACS+ provides per-user authentication, granular command authorization, and full accounting/audit trails for privileged network access.
What does RTO (Recovery Time Objective) measure in a telecom database disaster recovery plan?
Answer: The maximum acceptable time to restore database operations after a failure
RTO defines the maximum tolerable downtime from failure to restoration of normal database operations.
Under the FCC's hearing aid compatibility (HAC) rules for wireless handsets, what percentage of a carrier's handset models must meet the M3 or better rating for acoustic coupling?
Answer: 66%
FCC HAC rules require that at least two-thirds (approximately 66%) of a carrier's handset models offered meet the M3 or better acoustic coupling rating.
During project closure for a major network rollout, which activity is most important for organizational learning?
Answer: Documenting and sharing lessons learned
Lessons learned documentation captures what worked well and what didn't, enabling future projects to benefit from the experience.
What standard governs the synchronization of packet networks used in 5G and carrier Ethernet deployments?
Answer: IEEE 1588v2 (Precision Time Protocol)
IEEE 1588v2 (PTP) provides sub-microsecond time synchronization over packet networks, essential for 5G RAN timing and carrier Ethernet phase synchronization.
A CTE executive must assess the risk of a DDoS attack against the company's SS7 signaling infrastructure. Which risk formula is most commonly applied?
Answer: Risk = Likelihood × Impact
The standard risk formula multiplies the likelihood of a threat occurring by the potential impact it would cause.
What type of attack floods a network with spoofed ICMP echo requests, overwhelming the victim with amplified response traffic?
Answer: Smurf attack
A Smurf attack sends spoofed ICMP requests to a broadcast address, causing all hosts to reply to the victim.
A telecom DBA must schedule database maintenance tasks without impacting business-hours operations. Which SQL Agent feature enables this?
Answer: Scheduled jobs or maintenance plans with defined time windows
Scheduled maintenance plans or SQL Agent jobs allow DBAs to define specific off-peak time windows for index rebuilds, statistics updates, and backups.
A CTE is evaluating AI-driven network operations (AIOps) for a US carrier. Which primary benefit justifies the investment in AIOps for fault management?
Answer: Predictive anomaly detection to resolve issues before customer impact
AIOps uses machine learning to detect anomalies and predict failures proactively, allowing operators to resolve issues before they affect customers and reduce mean time to repair.
Why is documentation important in CTE technology?
Answer: It ensures knowledge transfer, troubleshooting, and operational continuity
Documentation captures configurations and procedures, enabling knowledge transfer and continuity regardless of staff changes.
Why is documentation important in CTE technology?
Answer: It ensures knowledge transfer, troubleshooting, and operational continuity
Documentation captures configurations and procedures, enabling knowledge transfer and continuity regardless of staff changes.
What is a risk matrix used for in CTE practice?
Answer: Evaluating risks by plotting likelihood against impact severity
A risk matrix plots probability against consequences to prioritize which risks need immediate attention.
Which multi-stakeholder organization manages the North American Numbering Plan (NANP) under contract with the FCC and CRTC?
Answer: NANPA (North American Numbering Plan Administrator)
NANPA serves as the neutral administrator of the NANP, managing area code assignments and numbering resources under contract with the FCC.