6- Bits can be sent over guided and unguided media as analog signal by a) digital modulation b) amplitude modulation c) frequency modulation d) phase modulation 7- The physical layer translates logical communication requests from the. into hardware specific operations. a) data link layer b) network layer c) transport layer d) application layer 8- Which of the following is the multiple access protocol for channel access control? a) CSMA/CD b) CSMA/CA c) Both CSMA/CD & CSMA/CA d) HDLC 9- Header of a frame generally contains a) synchronization bytes b) addresses c) frame identifier d) all of the mentioned

6- Bits can be sent over guided and unguided media as analog signal by a) digital modulation b) amplitude modulation c) frequency modulation d) phase modulation 7- The physical layer translates logical communication requests from the. into hardware specific operations. a) data link layer b) network layer c) transport layer d) application layer 8- Which of the following is the multiple access protocol for channel access control? a) CSMA/CD b) CSMA/CA c) Both CSMA/CD & CSMA/CA d) HDLC 9- Header of a frame generally contains a) synchronization bytes b) addresses c) frame identifier d) all of the mentioned

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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