Top 100+ MPLS Interview Questions – [UPDATED 2023]
![100+ Top MPLS Interview Questions and Answers Top 100 MPLS Interview Questions](https://d3vr4wgwlsdw9o.cloudfront.net/website/Top-100-MPLS-Interview-Questions.jpg)
Question 1: What is MPLS?
Question 2: Why MPLS is called as Multi-Protocol Label Switching?
Question 3: Why MPLS is called as Layer 2.5 Technology?
Question 4: What are the applications of MPLS?
Question 5: What are the advantages of MPLS?
Question 6: What is LDP?
Question 7: What is MPLS and why it is being so popular in short time?
Question 8: What is the protocol used by MPLS?
Question 9: MPLS works on which layer?
Question 10: What is the difference between P and PE router?
Question 11: Can I make my PE router as P?
Question 12: Two routers are having 4 equal cost links, how many LDP sessions will be established?
Question 13: My LDP router id, OSPF router id and BGP router id is different, will it work to forward the traffic of customers or not?
Question 14: What is Penultimate Hop Popping and why it is required? Which router performs the PHP function?
Question 15: I am receiving aggregate label, what does it mean?
Question 16: What are the different types of labels?
Question 17: How to make customer route unique?
Question 18: What is the difference between RD and RT?
Question 19: Can I assign a same RD to two different customers?
Question 20: Is RD travels in route update?
Question 21: My customer is having three branches and all are attached to three different PEs, In this case can I use the different VRF names?
Question 22: What is downstream on demand?
Question 23: How to filter MPLS labels?
Question 24: What is the default range of MPLS labels in Cisco routers? How to extend that range?
Question 25: Without route reflector can I implement MPLS?
Question 26: What is the difference between VPNv4 and IPv4 address family?
Question 27: What is MP-iBGP? Can we use normal BGP in lieu of MP-iBGP?
Question 28: What is LIB, LFIB?
Question 29: What is CEF and without enabling CEF, can we make MPLS work?
Question 30: I am receiving end to end customer routes on various PE but not able to ping those routes, what’s could be the problem?
Question 31: What is explicit null and implicit null?
Question 32: Default timers of LDP?
Question 33: Does LDP require OSPF, IS-IS or BGP?
Question 34: In neighbor discovery command, I am receiving only xmit, what does it mean
Question 35: What is transport address?
Question 36: What is the RFC of MPLS?
Question 37: Why MPLS is called multi-protocol?
Question 38: What is the difference between MPLS, SSL and IPSec?
Question 39: I am using different vendor products and want to implement TDP, what type of challenges will you face?
Question 40: What is the MFA Forum?
Question 41: What MPLS related mailing lists are there and what are they used for?
Question 42: How did MPLS evolve?
Question 43: What problems does MPLS solve?
Question 44: What is the status of the MPLS standard?
Question 45: What is a Label?
Question 46: What is a Label Switch Path?
Question 47: What is a Label Distribution Protocol?
Question 48: What’s the difference between CR-LDP and RSVP-TE
Question 49: What is a “Forwarding Equivalency Class”?
Question 50: How are Label Switch Paths built?
Question 51: What other protocols does MPLS support besides IP?
Question 52: What are the differences between MPLS and ATM?
Question 53: Does MPLS replace ATM?
Question 54: What is “Ships in the night”?
Question 55: What does MPLS traffic engineering accomplish?
Question 56: What are the components of MPLS-TE?
Question 57: How does MPLS merge traffic flows?
Question 58: How loops are prevented in MPLS networks?
Question 59: How does MPLS perform failure recovery?
Question 60: What differences are there in running MPLS in OSPF versus IS-IS environments
Question 61: Can there be two or more Autonomous Systems within the same MPLS domain?
Question 62: How does MPLS enable VPNs?
Question 63: What alternatives are there for implementing VPNs over MPLS?
Question 64: What is the “Martini Draft’?
Question 65: What is a “Layer 2 VPN”?
Question 66: What is a Virtual Private LAN Service (VPLS)?
Question 67: Are MPLS-VPNs secure?
Question 68: What kinds of QoS protocols does MPLS support?
Question 69: How do I integrate MPLS and DiffServ?
Question 70: How do I integrate MPLS and ATM QoS?
Question 71: What is “Generalized MPLS” or “GMPLS”
Question 72: What are the components of GMPLS?
Question 73: What are the features of GMPLS?
Question 74: What are the “Peer” and “Overlay” models?
Question 75: What is the “Optical Internetworking Forum”?
Question 76: Can voice and video traffic be natively encapsulated into MPLS?
Question 77: How are MPLS networks managed?
Question 78: Are there any MPLS-specific MIBs?
Question 79: Is there open source MPLS code to test MPLS?
Question 80: What shows and conferences provide information on MPLS?
Question 81: Are there any labs that are performing MPLS interoperability testing?
Question 82: Does MPLS support IPv6?
Question 83: Can I use the existing IPv4 MPLS backbone for IPv6?
Question 84: Define various troubleshooting commands in MPLS?
Question 85: What is adjacency table?
Question 86: Difference between MPLS IP and MPLS Label Protocol LDP command?
Question 87: If MPLS get disable, will it harm my IGP or IPv4 traffic?
Question 88: What is MPLS-TP?
Question 89: What is downstream and upstream router in MPLS? Difference between MPLS and MPLS-TP?
Question 90: How does LDP Initializes?
Question 91: What is Cell Mode MPLS over ATM?
Question 92: Difference Between VC Based Multiplexing And Logical Link Control Encapsulation in ATM?
Question 93: Basics of ATM?
Question 94: ATM is packet or circuit switching?
Question 95: Is LDP Required for VPNv4 Labels?
Question 96: What will happen if you see your PE loopback in vpnv4 table?
Question 97: What is Bidirectional Forwarding Detection?
Question 98: Different types of Pseudo Wire?
Question 99: Modes of EoMPLS (Ethernet over MPLS)
Question 100: What is L2VPN over Metro Ethernet?
Question 101: What is E-VPN (Ethernet VPN)?
Question 102: What is FEC in traditional IP routing and MPLS?
Question 103: How does CEF understand overlapping of ip addresses?
Question 104: What is the difference between Optimum, Fast and CEF Switching?
Question 105: Define CEF FIB table entries.
Question 106: What is the port number used by LDP?
Question 107: What are the prerequisites to run MPLS?
Question 108: What is penultimate hop popping?
Question 109: What are the functions done by MPLS?
Question 110: What is the difference between Per Platform Label Space and Per Interface Label Space?
Question 111: Is summarization is recommended in MPLS?
Question 112: What is TTL Propagation in MPLS?
Question 113: What is LDP IGP Synchronization?
Question 114: What is the difference between Implicit Null and Explicit Null?
Popular Courses
![100+ Top MPLS Interview Questions and Answers Cisco SD WAN Training – Viptela Training Course](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071316/Cisco-SD-WAN-Training-Viptela-Training-Course-CCNP-SDWAN.png)
Cisco SD WAN Training – Viptela Training Course
![100+ Top MPLS Interview Questions and Answers Fortinet Training – Fortigate Firewall Training Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071317/Fortinet-Firewall-Course-Fortinet-Training-Fortigate-Firewall-Training.png)
Fortinet Training – Fortigate Firewall Training Certification
![100+ Top MPLS Interview Questions and Answers AWS Certification Training | AWS Solutions Architect](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071314/AWS-Solution-Architect-Course-AWS-Solutions-Architect-Training.png)
AWS Certification Training | AWS Solutions Architect
![100+ Top MPLS Interview Questions and Answers Cisco CCNA Course – CCNA Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/Cisco-CCNA-Course-CCNA-Training-CCNA-Certification.png)
Cisco CCNA Course – CCNA Training
Contact Us
![100+ Top MPLS Interview Questions and Answers imedita flaticon](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2023/12/10071406/imedita-flaticon.png)
I-Medita
You Might Also Like:
![100+ Top MPLS Interview Questions and Answers Job Guaranteed Training for Network Engineers](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071317/Job-Guaranteed-Training-for-Network-Engineers.png)
Multi-Track Job Guaranteed Training for Network Engineers
![100+ Top MPLS Interview Questions and Answers Cyber Security Engineer Job Guaranteed Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/07/10071300/Cyber-Security-Engineer-Job-Guaranteed-Training.png)
Cyber Security Engineer Job Guaranteed Training
![100+ Top MPLS Interview Questions and Answers Network Security Engineer Multi Vendor Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/07/10071301/Network-Security-Engineer-Multi-Vendor-Training.png)
Multi-Vendor Job Guaranteed Training for Network Engineers
![100+ Top MPLS Interview Questions and Answers CCIE Training Online - CCIE Course - Best CCIE EI Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/CCIE-Training-Online-CCIE-Course-Best-CCIE-EI-Training.png)
CCIE Enterprise Infrastructure Certification Training
![100+ Top MPLS Interview Questions and Answers CCIE Security Training CCIE Security Course CCIE Security Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/CCIE-Security-Training-CCIE-Security-Course-CCIE-Security-Certification.png)
CCIE Security Certification Training
![100+ Top MPLS Interview Questions and Answers Cisco CCNA Course CCNA Training CCNA Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/Cisco-CCNA-Course-CCNA-Training-CCNA-Certification.png)
Cisco CCNA Certification Training
![100+ Top MPLS Interview Questions and Answers Cisco CCNP Training CCNP Course CCNP Enterprise Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071316/Cisco-CCNP-Training-CCNP-Course-CCNP-Enterprise-Certification.png)
Cisco CCNP Enterprise Certification Training
![100+ Top MPLS Interview Questions and Answers Cisco CCNP Security Training CCNP Security Course CCNP Security Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/Cisco-CCNP-Security-Training-CCNP-Security-Course-CCNP-Security-Certification.png)
Cisco CCNP Security Certification Training
![100+ Top MPLS Interview Questions and Answers Cisco SD WAN Training Viptela Training Course CCNP SDWAN](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071316/Cisco-SD-WAN-Training-Viptela-Training-Course-CCNP-SDWAN.png)
Cisco SD-WAN Solutions (ENSDWI) Training
![100+ Top MPLS Interview Questions and Answers Cisco SDA Training Cisco SD Access Training Cisco DNA Center](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071316/Cisco-SDA-Training-Cisco-SD-Access-Training-Cisco-DNA-Center.png)
Cisco SDA Training (SD Access) Training
![100+ Top MPLS Interview Questions and Answers Palo Alto Firewall Training Palo Alto Course Palo Alto Course](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071318/Palo-Alto-Firewall-Training-Palo-Alto-Course-Palo-Alto-Course.png)
Palo Alto Firewall PCNSA/PCNSE Training
![100+ Top MPLS Interview Questions and Answers Checkpoint Firewall Course Checkpoint Firewall Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071315/Checkpoint-Firewall-Course-Checkpoint-Firewall-Training.png)
Checkpoint Firewall CCSA/CCSE Training
![100+ Top MPLS Interview Questions and Answers Fortinet Firewall Course Fortinet Training Fortigate Firewall Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071317/Fortinet-Firewall-Course-Fortinet-Training-Fortigate-Firewall-Training.png)
Fortinet Fortigate Firewall Training
![100+ Top MPLS Interview Questions and Answers F5 Training F5 Course F5 Networks Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071317/F5-Training-F5-Course-F5-Networks-Certification.png)
F5 Load Balancer Certification Training
![100+ Top MPLS Interview Questions and Answers AWS Solution Architect Course AWS Solutions Architect Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071314/AWS-Solution-Architect-Course-AWS-Solutions-Architect-Training.png)
AWS Solutions Architect – Associate Training
![100+ Top MPLS Interview Questions and Answers Ethical Hacking Course Certified Ethical Hacker CEH Certification](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071317/Ethical-Hacking-Course-Certified-Ethical-Hacker-CEH-Certification.png)
Certified Ethical Hacker Certification Training
![100+ Top MPLS Interview Questions and Answers Cisco Devnet Training CCNA Devnet Devnet Associate Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071316/Cisco-Devnet-Training-CCNA-Devnet-Devnet-Associate-Training.png)
Cisco Devnet Associate Certification Training
![100+ Top MPLS Interview Questions and Answers Red Hat Ansible Network Automation Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071318/Red-Hat-Ansible-Network-Automation-Training.png)
Redhat Ansible Network Automation Training
![100+ Top MPLS Interview Questions and Answers Best Cisco ISE Training Cisco ISE Course 300 715 SISE](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071314/Best-Cisco-ISE-Training-Cisco-ISE-Course-300-715-SISE.png)
Cisco Identity Services Engine (ISE) Training
![100+ Top MPLS Interview Questions and Answers AWS Advanced Networking Specialty Training](https://imeditaoffload.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/06/10071314/AWS-Advanced-Networking-Specialty-Training.png)