1. Which of the following statement(s) about the structured design approach is (are) true? a. Structured design requires breaking a network into each layer of the TCP/IP model b. Intermediary devices that can be used at the access layer include switches and routers c. The distribution layer refers to the backbone network linking multiple access layers in a building whereas the core layer is not always needed in an organizational network d. a and b e. a, b and c 2. Which of the following statement(s) about the application architecture is (are) true? a. The presentation logic is always handled by the clients b. Data storage is always handled by the server c. In a one-tier client server architecture, the application logic can be split between the client and the "server" d. a and b a, b and c e. 3. Which of the following statement(s) about the physical and data link layers is (are) FALSE? a. Modems are used for a digital transmission of analog data whereas codecs are used for an analog transmission of digital data b. Media Access Control refers to controlling when computers transmit data c. Ethernet uses the Cyclic Redundancy Check algorithm to detect errors in transmission d. a and b e. a, b and c 4. Which of the following statement(s) about addresses is (are) true? a. MAC addresses are always 48-bit long and are assigned by hardware b. IP addresses can be 32- or 128-bit addresses and are assigned by software configuration C. NAT allows to use a set of IP addresses for traffic inside an organization's network and a second set of IP addresses for traffic over the Internet d. a and b a, b and c e. 5. Which of the following statement(s) about Cloud Computing is (are) true? a. In Cloud Computing, all or part of the infrastructure is provided by a third party b. In Software as a Service (SaaS), only software components are provided by a third party c. In Infrastructure as a Service (IaaS), all hardware and software components are provided by a third party d. All of the above e. None of the above a. 6. Which of the following statement(s) about the network models is (are) true? The session layer on the sending computer divides messages into Protocol Data Units and reassembles messages on the receiving computer b. The transport layer uses source and destination port number to identify the application whose data is transferred c. The application layer can assign Protocol Data Units of time-sensitive applications higher priority through a guaranteed data rate d. All of the above e. None of the above 7. Which of the following statement(s) about criteria used to select network operating systems (NOS) is (are) true? a. Compatibility applies to both the hardware and software components of a network b. In general, the number of users per licence is larger for Unix than for Windows Server c. Some NOS use a Graphic User Interface and others don't d. a and b a, b and c e. 8. Which of the following statements about network devices is (are) true? a. Devices with a low MTBF are more desirable than devices with a high MTBF b. Routers can be used at the distribution layer but not at the access layer c. Switches can be used at the access layer but not at the distribution layer d. All of the above e. None of the above 9. Which of the following statement(s) about routing is (are) true? a. With dynamic routing, routing tables are updated automatically and periodically based on information on real-time traffic conditions b. Metrics used for dynamic routing decisions can include cost, capacity, response time and packet loss c. Static routing is Distance Vector-based whereas dynamic routing is Link State-based d. a and b a, b and c e. 10. Which of the following statement(s) about the OSI model is (are) true? a. From top to bottom, the 7 layers of the OSI model are the application, the presentation, the session, the transport, the network, the data link and the physical layer b. The physical layer defines how to represent individual bits c. The network layer provides IP addressing and routing d. a and b a, b and c e
