Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. Professional Engineers of Ontario annual examination, 07-Elec-B4 Information Technology Networks, May 2014. Three hours, closed book, one PEO-approved non-programmable calculator permitted. Marks are printed in the left margin; the cover page states that there are five questions and that any four constitute a complete paper worth 100 marks. All five questions and every sub-part are answered below, because this set is intended as a study resource rather than as a sat examination.
Reference texts. A. Leon-Garcia and I. Widjaja, Communication Networks: Fundamental Concepts and Key Architectures, 2nd ed. — the text listed by the Engineers Canada syllabus for this examination code; J. F. Kurose and K. W. Ross, Computer Networking: A Top-Down Approach, 8th ed.; A. S. Tanenbaum and D. J. Wetherall, Computer Networks, 5th ed.; W. Stallings, Wireless Communications and Networking, 2nd ed.; T. S. Rappaport, Wireless Communications: Principles and Practice, 2nd ed. Normative documents cited: ISO/IEC 7498-1 (the OSI reference model), IEEE 802.3 (CSMA/CD), IEEE 802.11 (wireless LAN), 3GPP TS 23.401 (the LTE Evolved Packet Core), RFC 768 (UDP) and RFC 959 (FTP).
