The Cisco 400-051 exam is part of the CCIE Collaboration certification track, which focuses on advanced collaboration solutions. This exam tests a candidate's knowledge and skills in collaboration infrastructure, protocols, codecs, and other related technologies.

The Cisco 400-051 (CCIE Collaboration (v2.0)) exam is a certification exam designed for professionals who want to demonstrate their expertise in collaboration solutions, including unified communications, telephony, and video. It validates a candidate's skills in implementing, configuring, and troubleshooting Cisco collaboration solutions.

The number of questions in the Cisco 400-051 exam varies, but it typically consists of 90-110 questions.

The passing score for the Cisco 400-051 exam is not publicly disclosed by Cisco. Candidates receive a score report with their results after completing the exam.

The Cisco 400-051 exam requires an expert-level competency in collaboration solutions, including a deep understanding of Cisco technologies and protocols.

The question format of the Cisco 400-051 exam includes multiple-choice questions, drag-and-drop questions, and simulations. It may also include scenario-based questions and troubleshooting tasks.

The Cisco 400-051 exam can be taken at Pearson VUE testing centers worldwide. Candidates need to register for the exam through the Pearson VUE website.

The Cisco 400-051 exam is offered in English.

The cost of the Cisco 400-051 exam is $1,600 USD, but prices may vary based on location and currency exchange rates.

The target audience for the Cisco 400-051 exam includes network engineers, collaboration engineers, and IT professionals who work with Cisco collaboration solutions.

The average salary of a Cisco 400-051 certified professional varies by region and experience level, but it typically ranges from $90,000 to $130,000 USD per year.

The testing provider for the Cisco 400-051 exam is Pearson VUE.

The recommended experience for the Cisco 400-051 exam includes 3-5 years of experience working with Cisco collaboration solutions and a deep understanding of related technologies.

There are no formal prerequisites for the Cisco 400-051 exam, but candidates are expected to have a strong background in collaboration technologies and practical experience.

The expected retirement date of the Cisco 400-051 exam is not specified, but Cisco typically updates its exams periodically to reflect new technologies and industry trends.

The roadmap/track for the Cisco 400-051 exam includes passing the written exam and then completing a hands-on lab exam to achieve CCIE Collaboration certification.

The topics covered in the Cisco 400-051 exam include Cisco collaboration infrastructure, protocols, codecs, call control, QoS, security, and troubleshooting.

Sample questions for the Cisco 400-051 exam can be found on the Cisco Learning Network and other study resources such as exam preparation books and practice tests.

The difficulty level of the Cisco 400-051 exam is considered to be very high, as it is an expert-level certification that requires extensive knowledge and practical experience in collaboration technologies.