Exam Layout and Design

Some exam questions require you to select a single answer, whereas others ask you to select multiple correct answers. The following multiple-choice question requires you to select a single correct answer. Following the question is a brief summary of each answer selection and why it is either correct or incorrect.

Question 1 When MLS rewrites frames in hardware, which of the following information is not changed?
  • A. Source IP address

  • B. Destination MAC address

  • C. MAC frame's CRC

  • D. IP TTL

A1: Answer A is correct. The IP address is not changed when MLS rewrites frame and packet information. Answers B, C, and D are incorrect because they are rewritten by an MLS switch.

This sample question format corresponds closely to the Cisco ...

Get BCMSN Exam Cram™ 2 (Exam Cram 642-811) now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.