CloudNetX Cloud Interconnect Failure Diagnosis

1. A CloudNetX connection shows normal BGP status but no traffic passes. What is likely misconfigured?

BGP timers

Network ACLs or route-maps blocking traffic

BGP keepalive interval

OSPF cost values

2. A CloudNetX failover mechanism did not trigger during an outage. What is the primary troubleshooting step?

Check BFD or monitoring service is enabled and detecting failures

Restart all routers

Clear all BGP sessions

Reinstall the operating system

3. When CloudNetX reports high CPU usage on an edge router, what should you investigate?

BGP route processing and control plane traffic

Data plane throughput only

Application server performance

Storage utilization

4. A CloudNetX interconnect shows 'interface up but protocol down.' What is the most likely cause?

Physical cable is disconnected

BGP or other routing protocol failed to establish session

Power supply failure

Disk space exhausted

5. When troubleshooting CloudNetX, what does 'route summarization' help prevent?

Packet fragmentation

BGP routing table bloat and convergence delays

DNS poisoning

Buffer overflow attacks

6. A CloudNetX customer experiences intermittent disconnections. Which log should you examine first?

Application access logs

BGP and interface state change logs

DNS query logs

Firewall blocked traffic logs

7. What is the primary difference between OSPF and BGP in CloudNetX interconnect troubleshooting?

OSPF is used for external routing; BGP for internal

BGP is for inter-domain routing; OSPF for intra-domain

OSPF is faster than BGP

BGP encrypts traffic; OSPF does not

8. When CloudNetX reports unidirectional link failure, what does this indicate?

Complete physical layer breakdown

Traffic flows one direction but not the other

BGP peering issue only

DNS resolution failure

9. A CloudNetX edge router reports 'BGP session down' after a configuration change. What should you check first?

BGP AS number and peer IP address match

Network connectivity to the peer exists

Both a and b

Bandwidth provisioning only

10. Which CloudNetX diagnostic tool shows the exact path packets take across cloud interconnects?

Ping

Traceroute

Netstat

Iperf

11. When a CloudNetX interconnect connection drops unexpectedly, which layer should you check first?

Application layer

Physical layer and link status

DNS resolution

Firewall rules only

12. When diagnosing CloudNetX interconnect issues, what does high jitter primarily impact?

Total bandwidth capacity

Real-time application performance and VoIP quality

BGP convergence time

Physical link color

13. A CloudNetX prefix is not being advertised to a peer. What is the most common cause?

Incorrect BGP local preference value

Route not present in routing table or export policy blocks it

Insufficient MTU size

Firewall blocking traceroute responses

14. When a CloudNetX VPN tunnel shows 'down' status, which should you verify first?

Pre-shared key and encryption algorithms match

Firewall rules permit IPsec traffic

BGP advertisements are active

Both a and b are correct

15. What is the primary purpose of BFD (Bidirectional Forwarding Detection) in CloudNetX networks?

Encrypt traffic between cloud regions

Detect link failures and trigger fast failover

Balance traffic across multiple paths

Compress data packets

16. A CloudNetX interconnect is experiencing packet loss only during peak hours. What should you investigate first?

BGP session stability

Interface buffer exhaustion and congestion

DNS caching issues

Application server logs

17. When troubleshooting a CloudNetX connection, which command reveals real-time BGP neighbor status?

Show interface status

Show bgp neighbors

Ping -t

Tracert destination

18. A CloudNetX customer reports asymmetric routing between two cloud regions. What is the most likely cause?

Insufficient bandwidth allocation

Mismatched BGP AS path preferences or route advertisements

High packet loss on the primary link

Incorrect DNS configuration

19. Which metric is most critical when diagnosing latency issues on CloudNetX interconnects?

Packet loss percentage

Round-trip time (RTT) and jitter

Bandwidth utilization

CPU usage on edge routers

20. What does BGP route flapping indicate in a CloudNetX environment?

Normal load balancing

Unstable routing causing repeated route advertisements

High throughput performance

Successful failover completion

CloudNetX Diagnosing Cloud Interconnect Failures Quiz