350-501 Architecture — All Questions With Answers

Which access technology is commonly used in service provider networks to deliver high-speed internet over existing telephone lines?

Question 2easymultiple choice

In IOS XR architecture, what is the role of the Secure Domain Router (SDR)?

Question 3mediummultiple choice

A service provider is deploying L3VPN using BGP/MPLS. Which mechanism ensures customer isolation in the provider network?

Question 4mediummultiple choice

Which Cisco router platform is designed for high-density 100GE and uses IOS XR, making it suitable for the core/backbone of a service provider network?

Question 5mediummultiple choice

In IOS XR, what is the commit/rollback configuration model?

Question 6hardmultiple choice

A service provider wants to provide point-to-point Ethernet services with strict SLAs. Which technology should they use?

Question 7mediummultiple choice

Which MEF service type provides a point-to-point Ethernet connection between two user-network interfaces (UNIs)?

Question 8easymultiple choice

What is the main benefit of using Q-in-Q (802.1ad) in metro Ethernet networks?

Question 9mediummultiple choice

In EVPN, what is the function of the Ethernet Segment Identifier (ESI)?

Question 10hardmultiple choice

A service provider is deploying network slicing for 5G services. Which slice type is characterized by low latency and high reliability for applications like autonomous driving?

Question 11mediummultiple choice

In IOS XR, which process is responsible for managing the configuration database and commit operations?

Question 12hardmultiple choice

A service provider is using NSO for service orchestration. Which protocol does NSO use to communicate with network devices for configuration?

Question 13easymulti select

Which TWO are characteristics of the access layer in a service provider network? (Choose two.)

Question 14mediummulti select

Which TWO are benefits of using EVPN over traditional VPLS for L2VPN services? (Choose two.)

Question 15hardmulti select

Which THREE are correct statements about IOS XR process separation? (Choose three.)

Question 16easymultiple choice

Which access technology in a service provider network uses a passive optical splitter to distribute signals to multiple customers, with typical downstream speeds up to 2.5 Gbps?

Question 17mediummultiple choice

An SP is deploying MPLS in the core/backbone to support L3VPN services. What is the purpose of MP-BGP in an MPLS VPN architecture?

Question 18hardmultiple choice

An SP uses Cisco ASR 9000 routers with IOS XR. Which statement correctly describes the commit/rollback configuration model in IOS XR?

Question 19mediummultiple choice

Which Cisco router platform is designed for the core/backbone of a service provider network, supporting high-density 100GE interfaces and massive scale for MPLS and Segment Routing?

Question 20easymultiple choice

A service provider wants to offer a point-to-point Ethernet service between two customer sites with a defined bandwidth and performance guarantee, according to MEF standards. Which Carrier Ethernet service type is appropriate?

Question 21mediummultiple choice

In the context of network slicing for 5G, which type of slice is optimized for massive IoT with low data rates and high connection density?

Question 22hardmultiple choice

An SP deploys EVPN to provide L2VPN services with multi-homing. The customer CE is dual-homed to two different PE routers. Which EVPN mechanism ensures that only one PE forwards traffic to the CE for a given Ethernet segment, preventing loops?

Question 23mediummultiple choice

Which architecture feature of IOS XR ensures that a failure in one routing protocol process does not affect other processes on the same router?

Question 24mediummultiple choice

A service provider needs to offer L3VPN services with customer isolation. Which technology is used to maintain separate routing tables for different customers on a single PE router?

Question 25hardmultiple choice

An SP uses Cisco NSO for automation. Which protocol does NSO typically use to push configuration changes to network devices?

Question 26easymultiple choice

What is the primary function of the aggregation layer in a service provider network?

Question 27mediummultiple choice

Which MEF Carrier Ethernet service type is used for a rooted-multipoint topology, where a single root site communicates with multiple leaf sites but leaf sites cannot communicate directly?

Question 28mediummulti select

Which TWO of the following are characteristics of the IOS XR operating system architecture? (Select two.)

Question 29hardmulti select

Which THREE of the following are benefits of using EVPN over traditional VPLS for L2VPN services? (Select three.)

Question 30easymulti select

Which TWO access technologies are considered fiber-based solutions for service provider access networks? (Select two.)

Question 31mediummultiple choice

In an MPLS-based service provider core network, the aggregation layer typically connects to the core backbone. Which technology is primarily used at the aggregation layer to scale Ethernet services for many customers while preserving VLAN separation?

Question 32mediummultiple choice

A service provider wants to provide a point-to-point Ethernet service between two customer sites with strict Service Level Agreements (SLAs). Which MEF service type should be used?

Question 33hardmultiple choice

In Cisco IOS XR architecture, using Secure Domain Routers (SDRs) allows partitioning a physical router into multiple logical routers. Which statement about admin plane and SDRs is correct?

Question 34easymultiple choice

Which access technology uses a passive optical splitter to deliver broadband services to multiple subscribers over a single fiber?

Question 35hardmultiple choice

An SP is deploying EVPN to provide both L2 and L3 VPN services. Which advantage does EVPN offer over traditional VPLS for multi-homing?

Question 36mediummultiple choice

Which Cisco platform is best suited for the core/backbone role of a large service provider network, offering high scalability and MPLS forwarding capacity?

Question 37mediummultiple choice

In IOS XR, each routing protocol runs as a separate process. What is the primary benefit of this architecture?

Question 38easymultiple choice

Which MEF service type is used for multipoint-to-multipoint Ethernet connectivity, such as a corporate LAN extension across multiple sites?

Question 39hardmultiple choice

A service provider is implementing network slicing for 5G services. Which of the following is NOT a typical characteristic of a network slice?

Question 40mediummultiple choice

In the context of IOS XR commit/rollback configuration model, which command is used to apply a set of configuration changes as a single atomic operation?

Question 41easymultiple choice

Which Cisco automation tool is designed for service modeling with YANG and provides lifecycle management of network services?

Question 42mediummultiple choice

In BGP/MPLS IP VPN (L3VPN), which component provides customer isolation by maintaining separate routing tables per customer?

Question 43hardmultiple choice

An SP is designing a metro Ethernet network using Q-in-Q. A customer uses VLAN ID 100 on their network, and the SP assigns service VLAN 200. Which frame format is used on the SP network?

Question 44mediummultiple choice

Which Cisco SP router platform uses IOS XR and is commonly deployed at the aggregation layer, supporting both L2 and L3 services?

Question 45easymultiple choice

Which access technology is based on ITU-T G.984 and provides downstream speeds up to 2.488 Gbps?

Question 46mediummulti select

Which TWO of the following are benefits of using EVPN over traditional VPLS for L2VPN services?

Question 47hardmulti select

Which THREE of the following are key characteristics of Cisco IOS XR operating system?

Question 48mediummulti select

An SP is planning to offer L3VPN services. Which TWO components are essential for BGP/MPLS IP VPN operation?

Question 49mediummulti select

Which TWO of the following are disadvantages of using VPLS for L2VPN services compared to EVPN?

Question 50hardmulti select

A service provider wants to deploy network slicing for 5G services. Which THREE of the following are typical requirements for network slicing?

Question 51easymultiple choice

Which access technology uses wavelength division multiplexing to provide symmetric gigabit speeds in fiber-optic networks?

Question 52mediummultiple choice

A service provider is deploying a new MPLS core network and needs a router platform that supports high-scale MPLS forwarding and offers a modular operating system. Which Cisco platform is best suited for this role?

Question 53mediummultiple choice

In IOS XR, each routing protocol runs as a separate process. What is the primary benefit of this architecture?

Question 54hardmultiple choice

A service provider wants to offer a point-to-point Layer 2 Ethernet service between two customer sites with strict SLAs. The solution must use MPLS pseudowires. Which MEF service type aligns with this requirement?

Question 55easymultiple choice

Which component of the IOS XR architecture is responsible for managing the system configuration and providing a separation of control plane for multiple tenants?

Question 56mediummultiple choice

A service provider is implementing EVPN to support multi-homing for a customer site. Which EVPN attribute ensures that only one of the PEs forwards traffic for a given Ethernet segment?

Question 57hardmultiple choice

An ISP wants to create separate virtual networks over a shared physical infrastructure to serve mobile broadband (eMBB), IoT (mMTC), and mission-critical services (uRLLC). Which technology enables this segmentation with per-slice resource guarantees?

Question 58easymultiple choice

Which Cisco automation tool uses service models in YANG and communicates via NETCONF to orchestrate device configurations and lifecycle management?

Question 59mediummultiple choice

In a BGP/MPLS IP VPN, which technique ensures that customer traffic from different VPNs remains isolated on the same PE router?

Question 60hardmultiple choice

A metro Ethernet provider needs to scale customer VLANs beyond the 4,096 limit by encapsulating customer VLAN tags with an outer service provider tag. Which IEEE standard is used?

Question 61mediummultiple choice

Which statement about the commit/rollback configuration model in IOS XR is true?

Question 62mediummultiple choice

Which technology provides Layer 2 multipoint connectivity over an MPLS network, where customer sites appear to be on the same Ethernet broadcast domain?

Question 63easymultiple choice

Which Cisco router platform is designed for the aggregation layer and runs IOS XR, supporting both L2 and L3 services at high density?

Question 64mediummultiple choice

In an IOS XR system, CPU and memory resources are allocated per line card. What is the primary reason for this design?

Question 65mediummulti select

Which TWO statements accurately describe the differences between GPON and XGS-PON? (Choose two.)

Question 66hardmulti select

Which THREE are benefits of using EVPN over traditional VPLS? (Choose three.)

Question 67mediummulti select

Which TWO are key features of IOS XR architecture? (Choose two.)

Question 68hardmulti select

Which THREE are MEF-defined Ethernet service types? (Choose three.)

Question 69mediummultiple choice

Review the full OSPF breakdown →

A service provider is deploying a new metro Ethernet network and needs to support multiple customer VLANs over a single physical link without overlapping VLAN IDs. Which technology should be used at the access layer to achieve this?

Question 70hardmultiple choice

An SP is designing a core network using Cisco CRS routers running IOS XR. They require process separation to ensure that a failure in the BGP process does not affect OSPF operations. Which IOS XR architectural feature provides this capability?

Question 71easymultiple choice

Which Cisco router platform is designed for the aggregation layer and supports both mobile backhaul and business services with high density 10GE/100GE interfaces?

Question 72mediummultiple choice

A provider is implementing EVPN for data center interconnect. They require multi-homing with all-active load balancing and fast convergence using BGP. Which EVPN feature enables this?

Question 73hardmultiple choice

An SP is deploying network slicing for 5G services. They need to ensure ultra-reliable low-latency communication (uRLLC) slice has dedicated bandwidth and low latency. Which mechanism is best suited to guarantee performance for this slice?

Question 74mediummultiple choice

A service provider wants to automate service provisioning using NSO. Which protocol is typically used by NSO to configure network devices?

Question 75easymultiple choice

Which MPLS-based service provides point-to-point Ethernet connectivity over a service provider network, emulating a wire?

Question 76mediummultiple choice

An SP is using Cisco ASR 9000 routers with IOS XR. They need to apply a configuration change and ensure that if the change causes issues, it can be easily reverted. Which IOS XR feature supports this?

Question 77hardmultiple choice

A service provider is migrating from LDP to Segment Routing (SR) in the core. They need to support MPLS forwarding without maintaining LDP sessions. Which SR data plane is appropriate?

Question 78mediummultiple choice

What is the function of the admin plane in IOS XR architecture?

Question 79easymultiple choice

Which MEF service type provides a multipoint-to-multipoint Ethernet virtual connection?

Question 80mediummultiple choice

A service provider is deploying L3VPN. Which mechanism ensures that customer routes are isolated and not leaked between different customers?

Question 81hardmultiple choice

An SP is designing a GPON access network. Which technology allows multiple ONUs to share the same fiber using different wavelengths for upstream and downstream?

Question 82mediummultiple choice

In an MPLS core, which forwarding mechanism do P routers use to forward packets for L3VPN?

Question 83easymultiple choice

Which Cisco platform is designed for high-capacity core/backbone routing with support for MPLS, Segment Routing, and large-scale BGP?

Question 84mediummulti select

Which TWO statements about IOS XR architecture are correct? (Choose two.)

Question 85mediummulti select

Which THREE are characteristics of EVPN? (Choose three.)

Question 86hardmulti select

Which TWO are correct about network slicing? (Choose two.)

Question 87easymultiple choice

In a service provider network, the access layer connects end customers. Which technology is commonly used for fibre-based access in GPON deployments?

Question 88easymultiple choice

Which Cisco SP router platform runs IOS XR and is designed for the aggregation layer with high-density 10GE/100GE interfaces?

Question 89easymultiple choice

In IOS XR architecture, what is the purpose of Secure Domain Router (SDR)?

Question 90easymultiple choice

Which MPLS-based service provides point-to-point Ethernet connectivity over a service provider network, also known as a pseudowire?

Question 91mediummultiple choice

A service provider wants to offer a service where a customer site can communicate with multiple other sites in a full mesh over MPLS. Which L2VPN technology is most appropriate?

Question 92mediummultiple choice

In IOS XR, what is the primary purpose of the commit/rollback configuration model?

Question 93mediummultiple choice

Which MEF service type defines a point-to-point Ethernet connection, often used for business connectivity?

Question 94mediummultiple choice

In EVPN, what is the purpose of Ethernet Segment Identifier (ESI)?

Question 95mediummultiple choice

Study the full ACL explanation →

What is the role of Network Services Orchestrator (NSO) in service provider automation?

Question 96mediummultiple choice

Which access technology uses orthogonal frequency-division multiplexing (OFDM) and is commonly deployed for high-speed internet over copper telephone lines?

Question 97hardmultiple choice

In a Cisco IOS XR router, which statement best describes process separation?

Question 98hardmultiple choice

A service provider is designing a network to support mobile backhaul for eMBB, uRLLC, and mMTC services. Which technology allows the physical network to be divided into virtual networks with dedicated resources for each service type?

Question 99hardmultiple choice

In the context of EVPN, which BGP address family is used to advertise MAC/VPN routes between PE routers?

Question 100hardmultiple choice

Which Cisco platform is designed for the core/backbone of large service provider networks and offers high scalability with IOS XR?

Question 1easymultiple choice

Which access technology is commonly used in service provider networks to deliver high-speed internet over existing telephone lines?

Question 2easymultiple choice

In IOS XR architecture, what is the role of the Secure Domain Router (SDR)?

Question 3mediummultiple choice

A service provider is deploying L3VPN using BGP/MPLS. Which mechanism ensures customer isolation in the provider network?

Question 4mediummultiple choice

Which Cisco router platform is designed for high-density 100GE and uses IOS XR, making it suitable for the core/backbone of a service provider network?

Question 5mediummultiple choice

In IOS XR, what is the commit/rollback configuration model?

Question 6hardmultiple choice

A service provider wants to provide point-to-point Ethernet services with strict SLAs. Which technology should they use?

Question 7mediummultiple choice

Which MEF service type provides a point-to-point Ethernet connection between two user-network interfaces (UNIs)?

Question 8easymultiple choice

What is the main benefit of using Q-in-Q (802.1ad) in metro Ethernet networks?

Question 9mediummultiple choice

In EVPN, what is the function of the Ethernet Segment Identifier (ESI)?

Question 10hardmultiple choice

A service provider is deploying network slicing for 5G services. Which slice type is characterized by low latency and high reliability for applications like autonomous driving?

Question 11mediummultiple choice

In IOS XR, which process is responsible for managing the configuration database and commit operations?

Question 12hardmultiple choice

A service provider is using NSO for service orchestration. Which protocol does NSO use to communicate with network devices for configuration?

Question 13easymulti select

Which TWO are characteristics of the access layer in a service provider network? (Choose two.)

Question 14mediummulti select

Which TWO are benefits of using EVPN over traditional VPLS for L2VPN services? (Choose two.)

Question 15hardmulti select

Which THREE are correct statements about IOS XR process separation? (Choose three.)

Question 16easymultiple choice

Which access technology in a service provider network uses a passive optical splitter to distribute signals to multiple customers, with typical downstream speeds up to 2.5 Gbps?

Question 17mediummultiple choice

An SP is deploying MPLS in the core/backbone to support L3VPN services. What is the purpose of MP-BGP in an MPLS VPN architecture?

Question 18hardmultiple choice

An SP uses Cisco ASR 9000 routers with IOS XR. Which statement correctly describes the commit/rollback configuration model in IOS XR?

Question 19mediummultiple choice

Which Cisco router platform is designed for the core/backbone of a service provider network, supporting high-density 100GE interfaces and massive scale for MPLS and Segment Routing?

Question 20easymultiple choice

A service provider wants to offer a point-to-point Ethernet service between two customer sites with a defined bandwidth and performance guarantee, according to MEF standards. Which Carrier Ethernet service type is appropriate?

Question 21mediummultiple choice

In the context of network slicing for 5G, which type of slice is optimized for massive IoT with low data rates and high connection density?

Question 22hardmultiple choice

An SP deploys EVPN to provide L2VPN services with multi-homing. The customer CE is dual-homed to two different PE routers. Which EVPN mechanism ensures that only one PE forwards traffic to the CE for a given Ethernet segment, preventing loops?

Question 23mediummultiple choice

Which architecture feature of IOS XR ensures that a failure in one routing protocol process does not affect other processes on the same router?

Question 24mediummultiple choice

A service provider needs to offer L3VPN services with customer isolation. Which technology is used to maintain separate routing tables for different customers on a single PE router?

Question 25hardmultiple choice

An SP uses Cisco NSO for automation. Which protocol does NSO typically use to push configuration changes to network devices?

Question 26easymultiple choice

What is the primary function of the aggregation layer in a service provider network?

Question 27mediummultiple choice

Which MEF Carrier Ethernet service type is used for a rooted-multipoint topology, where a single root site communicates with multiple leaf sites but leaf sites cannot communicate directly?

Question 28mediummulti select

Which TWO of the following are characteristics of the IOS XR operating system architecture? (Select two.)

Question 29hardmulti select

Which THREE of the following are benefits of using EVPN over traditional VPLS for L2VPN services? (Select three.)

Question 30easymulti select

Which TWO access technologies are considered fiber-based solutions for service provider access networks? (Select two.)

Question 31mediummultiple choice

In an MPLS-based service provider core network, the aggregation layer typically connects to the core backbone. Which technology is primarily used at the aggregation layer to scale Ethernet services for many customers while preserving VLAN separation?

Question 32mediummultiple choice

A service provider wants to provide a point-to-point Ethernet service between two customer sites with strict Service Level Agreements (SLAs). Which MEF service type should be used?

Question 33hardmultiple choice

In Cisco IOS XR architecture, using Secure Domain Routers (SDRs) allows partitioning a physical router into multiple logical routers. Which statement about admin plane and SDRs is correct?

Question 34easymultiple choice

Which access technology uses a passive optical splitter to deliver broadband services to multiple subscribers over a single fiber?

Question 35hardmultiple choice

An SP is deploying EVPN to provide both L2 and L3 VPN services. Which advantage does EVPN offer over traditional VPLS for multi-homing?

Question 36mediummultiple choice

Which Cisco platform is best suited for the core/backbone role of a large service provider network, offering high scalability and MPLS forwarding capacity?

Question 37mediummultiple choice

In IOS XR, each routing protocol runs as a separate process. What is the primary benefit of this architecture?

Question 38easymultiple choice

Which MEF service type is used for multipoint-to-multipoint Ethernet connectivity, such as a corporate LAN extension across multiple sites?

Question 39hardmultiple choice

A service provider is implementing network slicing for 5G services. Which of the following is NOT a typical characteristic of a network slice?

Question 40mediummultiple choice

In the context of IOS XR commit/rollback configuration model, which command is used to apply a set of configuration changes as a single atomic operation?

Question 41easymultiple choice

Which Cisco automation tool is designed for service modeling with YANG and provides lifecycle management of network services?

Question 42mediummultiple choice

In BGP/MPLS IP VPN (L3VPN), which component provides customer isolation by maintaining separate routing tables per customer?

Question 43hardmultiple choice

An SP is designing a metro Ethernet network using Q-in-Q. A customer uses VLAN ID 100 on their network, and the SP assigns service VLAN 200. Which frame format is used on the SP network?

Question 44mediummultiple choice

Which Cisco SP router platform uses IOS XR and is commonly deployed at the aggregation layer, supporting both L2 and L3 services?

Question 45easymultiple choice

Which access technology is based on ITU-T G.984 and provides downstream speeds up to 2.488 Gbps?

Question 46mediummulti select

Which TWO of the following are benefits of using EVPN over traditional VPLS for L2VPN services?

Question 47hardmulti select

Which THREE of the following are key characteristics of Cisco IOS XR operating system?

Question 48mediummulti select

An SP is planning to offer L3VPN services. Which TWO components are essential for BGP/MPLS IP VPN operation?

Question 49mediummulti select

Which TWO of the following are disadvantages of using VPLS for L2VPN services compared to EVPN?

Question 50hardmulti select

A service provider wants to deploy network slicing for 5G services. Which THREE of the following are typical requirements for network slicing?

Question 51easymultiple choice

Which access technology uses wavelength division multiplexing to provide symmetric gigabit speeds in fiber-optic networks?

Question 52mediummultiple choice

A service provider is deploying a new MPLS core network and needs a router platform that supports high-scale MPLS forwarding and offers a modular operating system. Which Cisco platform is best suited for this role?

Question 53mediummultiple choice

In IOS XR, each routing protocol runs as a separate process. What is the primary benefit of this architecture?

Question 54hardmultiple choice

A service provider wants to offer a point-to-point Layer 2 Ethernet service between two customer sites with strict SLAs. The solution must use MPLS pseudowires. Which MEF service type aligns with this requirement?

Question 55easymultiple choice

Which component of the IOS XR architecture is responsible for managing the system configuration and providing a separation of control plane for multiple tenants?

Question 56mediummultiple choice

A service provider is implementing EVPN to support multi-homing for a customer site. Which EVPN attribute ensures that only one of the PEs forwards traffic for a given Ethernet segment?

Question 57hardmultiple choice

An ISP wants to create separate virtual networks over a shared physical infrastructure to serve mobile broadband (eMBB), IoT (mMTC), and mission-critical services (uRLLC). Which technology enables this segmentation with per-slice resource guarantees?

Question 58easymultiple choice

Which Cisco automation tool uses service models in YANG and communicates via NETCONF to orchestrate device configurations and lifecycle management?

Question 59mediummultiple choice

In a BGP/MPLS IP VPN, which technique ensures that customer traffic from different VPNs remains isolated on the same PE router?

Question 60hardmultiple choice

A metro Ethernet provider needs to scale customer VLANs beyond the 4,096 limit by encapsulating customer VLAN tags with an outer service provider tag. Which IEEE standard is used?

Question 61mediummultiple choice

Which statement about the commit/rollback configuration model in IOS XR is true?

Question 62mediummultiple choice

Which technology provides Layer 2 multipoint connectivity over an MPLS network, where customer sites appear to be on the same Ethernet broadcast domain?

Question 63easymultiple choice

Which Cisco router platform is designed for the aggregation layer and runs IOS XR, supporting both L2 and L3 services at high density?

Question 64mediummultiple choice

In an IOS XR system, CPU and memory resources are allocated per line card. What is the primary reason for this design?

Question 65mediummulti select

Which TWO statements accurately describe the differences between GPON and XGS-PON? (Choose two.)

Question 66hardmulti select

Which THREE are benefits of using EVPN over traditional VPLS? (Choose three.)

Question 67mediummulti select

Which TWO are key features of IOS XR architecture? (Choose two.)

Question 68hardmulti select

Which THREE are MEF-defined Ethernet service types? (Choose three.)

Question 69mediummultiple choice

Review the full OSPF breakdown →

A service provider is deploying a new metro Ethernet network and needs to support multiple customer VLANs over a single physical link without overlapping VLAN IDs. Which technology should be used at the access layer to achieve this?

Question 70hardmultiple choice

An SP is designing a core network using Cisco CRS routers running IOS XR. They require process separation to ensure that a failure in the BGP process does not affect OSPF operations. Which IOS XR architectural feature provides this capability?

Question 71easymultiple choice

Which Cisco router platform is designed for the aggregation layer and supports both mobile backhaul and business services with high density 10GE/100GE interfaces?

Question 72mediummultiple choice

A provider is implementing EVPN for data center interconnect. They require multi-homing with all-active load balancing and fast convergence using BGP. Which EVPN feature enables this?

Question 73hardmultiple choice

An SP is deploying network slicing for 5G services. They need to ensure ultra-reliable low-latency communication (uRLLC) slice has dedicated bandwidth and low latency. Which mechanism is best suited to guarantee performance for this slice?

Question 74mediummultiple choice

A service provider wants to automate service provisioning using NSO. Which protocol is typically used by NSO to configure network devices?

Question 75easymultiple choice

Which MPLS-based service provides point-to-point Ethernet connectivity over a service provider network, emulating a wire?

Question 76mediummultiple choice

An SP is using Cisco ASR 9000 routers with IOS XR. They need to apply a configuration change and ensure that if the change causes issues, it can be easily reverted. Which IOS XR feature supports this?

Question 77hardmultiple choice

A service provider is migrating from LDP to Segment Routing (SR) in the core. They need to support MPLS forwarding without maintaining LDP sessions. Which SR data plane is appropriate?

Question 78mediummultiple choice

What is the function of the admin plane in IOS XR architecture?

Question 79easymultiple choice

Which MEF service type provides a multipoint-to-multipoint Ethernet virtual connection?

Question 80mediummultiple choice

A service provider is deploying L3VPN. Which mechanism ensures that customer routes are isolated and not leaked between different customers?

Question 81hardmultiple choice

An SP is designing a GPON access network. Which technology allows multiple ONUs to share the same fiber using different wavelengths for upstream and downstream?

Question 82mediummultiple choice

In an MPLS core, which forwarding mechanism do P routers use to forward packets for L3VPN?

Question 83easymultiple choice

Which Cisco platform is designed for high-capacity core/backbone routing with support for MPLS, Segment Routing, and large-scale BGP?

Question 84mediummulti select

Which TWO statements about IOS XR architecture are correct? (Choose two.)

Question 85mediummulti select

Which THREE are characteristics of EVPN? (Choose three.)

Question 86hardmulti select

Which TWO are correct about network slicing? (Choose two.)

Question 87easymultiple choice

In a service provider network, the access layer connects end customers. Which technology is commonly used for fibre-based access in GPON deployments?

Question 88easymultiple choice

Which Cisco SP router platform runs IOS XR and is designed for the aggregation layer with high-density 10GE/100GE interfaces?

Question 89easymultiple choice

In IOS XR architecture, what is the purpose of Secure Domain Router (SDR)?

Question 90easymultiple choice

Which MPLS-based service provides point-to-point Ethernet connectivity over a service provider network, also known as a pseudowire?

Question 91mediummultiple choice

A service provider wants to offer a service where a customer site can communicate with multiple other sites in a full mesh over MPLS. Which L2VPN technology is most appropriate?

Question 92mediummultiple choice

In IOS XR, what is the primary purpose of the commit/rollback configuration model?

Question 93mediummultiple choice

Which MEF service type defines a point-to-point Ethernet connection, often used for business connectivity?

Question 94mediummultiple choice

In EVPN, what is the purpose of Ethernet Segment Identifier (ESI)?

Question 95mediummultiple choice

Study the full ACL explanation →

What is the role of Network Services Orchestrator (NSO) in service provider automation?

Question 96mediummultiple choice

Which access technology uses orthogonal frequency-division multiplexing (OFDM) and is commonly deployed for high-speed internet over copper telephone lines?

Question 97hardmultiple choice

In a Cisco IOS XR router, which statement best describes process separation?

Question 98hardmultiple choice

A service provider is designing a network to support mobile backhaul for eMBB, uRLLC, and mMTC services. Which technology allows the physical network to be divided into virtual networks with dedicated resources for each service type?

Question 99hardmultiple choice

In the context of EVPN, which BGP address family is used to advertise MAC/VPN routes between PE routers?

Question 100hardmultiple choice