In the classic monolithic Cisco IOS architecture, how does the operating system handle the execution of routing protocols and other router features?

Each feature runs as a separate process with its own protected memory space, and the kernel schedules them independently.

All features run as threads within a single kernel process, sharing the same memory space and relying on cooperative multitasking.

Each routing protocol is isolated in a separate virtual machine managed by a hypervisor.

Routing protocols run in user space while the data plane runs in kernel space, with strict isolation between the two.

A service provider is designing a new core network with multiple routers. The routers must support nonstop forwarding (NSF) and in-service software upgrades (ISSU) to meet a strict service-level agreement. The team is considering IOS XR and IOS XE. Which statement accurately compares the two?

IOS XE provides the same level of NSF and ISSU as IOS XR

IOS XE is designed for large-scale core routers, while IOS XR is for edge routers

IOS XR uses a monolithic kernel, while IOS XE uses a microkernel

IOS XR is designed for distributed, high-availability environments, while IOS XE is more suited to edge and smaller-scale deployments

Which of the following is a well-known limitation of the classic monolithic Cisco IOS architecture?

A software fault in any process can cause the entire router to crash because all processes share the same memory space.

It cannot run on hardware with more than 4 GB of RAM.

It cannot support routing protocols such as OSPF and BGP simultaneously.

It requires a separate control plane processor for each line card.

CiscoCertified Network Professional Service Provider

Domain 1Objective 2

1.2 Describe Cisco Network Software Architecture 350-501 Practice Questions (Page 6)

Part of the Architecture domain, which accounts for 15% of the 350-501 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 1–2 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

4concepts

15%of the exam

Questions 26–30

26foundation · easy
In the classic monolithic Cisco IOS architecture, how does the operating system handle the execution of routing protocols and other router features?
Select an answer first
27foundation · easy
Which Cisco network operating system is best suited for large service provider core routers that require high scalability and process-level high availability?
Select an answer first
28expert · hard
A service provider is designing a new core network with multiple routers. The routers must support nonstop forwarding (NSF) and in-service software upgrades (ISSU) to meet a strict service-level agreement. The team is considering IOS XR and IOS XE. Which statement accurately compares the two?
Select an answer first
29foundation · easy
Which of the following is a well-known limitation of the classic monolithic Cisco IOS architecture?
Select an answer first
30application · medium
A network engineer is comparing Cisco IOS XE and Cisco IOS XR for a new edge router deployment. The router must support MPLS and BGP, and the team wants to use the same CLI style they are familiar with from classic IOS. Which operating system would best meet this requirement?
Select an answer first

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1.2 Describe Cisco Network Software Architecture 350-501 Practice Questions (Page 6)

Questions 26–30

In the classic monolithic Cisco IOS architecture, how does the operating system handle the execution of routing protocols and other router features?

Which Cisco network operating system is best suited for large service provider core routers that require high scalability and process-level high availability?

A service provider is designing a new core network with multiple routers. The routers must support nonstop forwarding (NSF) and in-service software upgrades (ISSU) to meet a strict service-level agreement. The team is considering IOS XR and IOS XE. Which statement accurately compares the two?

Which of the following is a well-known limitation of the classic monolithic Cisco IOS architecture?

A network engineer is comparing Cisco IOS XE and Cisco IOS XR for a new edge router deployment. The router must support MPLS and BGP, and the team wants to use the same CLI style they are familiar with from classic IOS. Which operating system would best meet this requirement?

Keep studying — Architecture