JN0-105 Junos, Associate (JNCIA-JUNOS) Practice Questions
Prepare for JN0-105 with more than an answer.
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- v1Junos, Associate (JNCIA-Junos) 150 questions Locked
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- JN0-105Legacy Junos, Assoicate (JNCIA-JUNOS) 118 questions Current
- Exam fee
- $200 USD
- Level
- Associate
- Valid for
- 3 years
Domains covered on the exam 7
- Networking Fundamentals
- Junos OS Fundamentals
- User Interfaces
- Configuration Basics
- Operational Monitoring and Maintenance
- Routing Fundamentals
- Routing Policy and Firewall Filters
- 1
What are two methods for navigating to configuration mode from an operational mode prompt? (Choose two.)
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Correct answer: B, D
- 2
Which statement is correct concerning exception traffic processing? A.Exception traffic is discarded by the PFE.B.Exception traffic is rate-limited to protect the RE.C.Exception traffic is always dropped during congestion.D.Exception traffic is never forwarded.
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Correct answer:
- 3
A network architect is observing abnormally high CPU utilization on the Routing Engine (RE) of a core router, which is impacting management access and routing protocol stability. However, reports from network users indicate that data forwarding performance for transit traffic remains unaffected. Which category of traffic is the most likely cause of the high RE CPU, and what is the most appropriate initial command to investigate the issue?
graph TD subgraph Router RE[Routing Engine - Control Plane] PFE[Packet Forwarding Engine - Forwarding Plane] end Internet -- Transit Traffic --> PFE PFE -- Forwarded --> LAN Internet -- Exception Traffic --> PFE PFE -- Punt --> RE subgraph Management Admin[Admin PC] end Admin -- Management Traffic --> RE RE -- Routing Updates --> PFEShow answer details
Correct answer: C
The Routing Engine (RE) is responsible for handling exception traffic, which includes packets destined for the device itself, routing protocol updates, and management traffic. Transit traffic is processed by the Packet Forwarding Engine (PFE) and does not typically impact RE CPU. Since transit traffic is unaffected but the RE CPU is high, exception traffic is the cause. The
show system processes extensivecommand is the best tool to identify which specific process on the RE is consuming the CPU resources. - 4
Which two statements are correct regarding Layer 2 network switches? (Choose two.)
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Correct answer: A, B
