I just took the exam and i will tell you that it depend on your comfort level with networking. because the exam is randomly generated its hard to determine the question. but here are some clues about CIS175. the exam fee is $100, it contains 100 question, you have 90min to complete the test, its multiple choice and you must score a minimum of 80 point to pass the exam.
Some of the important AOC for the exam includes OSI model, Subnetting, Network security and Topology.
Good Luck!