The Cisco 640-878 exam focuses on validating the candidate's ability to configure, verify, and troubleshoot the primary routing protocols, network security, and network management in a service provider environment.

The Cisco 640-878 exam, also known as Building Cisco Service Provider Next-Generation Networks, Part 2, is designed to test the knowledge and skills of network professionals in implementing and supporting service provider network infrastructures.

The number of questions asked in the Cisco 640-878 exam typically ranges from 65 to 75 questions.

The passing score for the Cisco 640-878 exam is usually around 825 out of 1000, but this can vary slightly.

The competency level required for the Cisco 640-878 exam is intermediate to advanced, as it covers complex networking concepts and configurations.

The question format of the Cisco 640-878 exam includes multiple-choice questions, drag-and-drop, simulations, and fill-in-the-blank questions.

You can take the Cisco 640-878 exam at a Pearson VUE testing center or through an online proctored exam.

The Cisco 640-878 exam is offered in English.

The cost of the Cisco 640-878 exam is approximately $300 USD, but prices may vary by region.

The target audience for the Cisco 640-878 exam includes network engineers, network administrators, and network specialists working in a service provider environment.

The average salary of a professional certified with the Cisco 640-878 can range from $70,000 to $110,000 per year, depending on experience and location.

The testing providers for the Cisco 640-878 exam are Pearson VUE and Cisco.

The recommended experience for the Cisco 640-878 exam includes 1-3 years of experience working with service provider networks and a solid understanding of networking fundamentals.

There are no formal prerequisites for the Cisco 640-878 exam, but it is recommended that candidates have a good understanding of networking concepts and have completed the Building Cisco Service Provider Next-Generation Networks, Part 1 course.

The expected retirement date for the Cisco 640-878 exam has not been officially announced, but Cisco typically provides a retirement notice at least six months in advance.

The Cisco 640-878 exam is part of the Cisco Certified Network Associate Service Provider (CCNA SP) certification track.

The topics covered in the Cisco 640-878 exam include IP NGN architecture, service provider routing, IPv6, MPLS, multicast, and network management.

Sample questions for the Cisco 640-878 exam can be found on the official Cisco website or through various study guide books and online resources.

The difficulty level of the Cisco 640-878 exam is considered to be moderate to high, requiring a thorough understanding of service provider network concepts and configurations.