#13 Networking - part 1

1. Which of the following is a definition of a protocol?

• A. A set of rules that defines how data should be transmitted and which standards should be followed, and if all parties follow the protocol then transmission ought to succed
• B. A layer of a set of standards that defines what hardware and software should be used in transmission
• C. A set of hardware and software that keeps transmission secure
• D. A method of encrypting data before it is transmitted across the Internet

2. Expand the acronym TCP

• A. Transfer control procedure
• B. Transfer control protocol
• C. Transmission control protocol
• D. Transmission control procedure

3. Which of the following statements describes the role of the transport layer in TCP/IP?

• A. It has direct responsibility for the hardware aspect of the transmission, identiftying the network interface card (NIC) of the next destination device
• B. It labels each data packet with the IP address of the recipient plus its own IP address
• C. It creates an end-to-end connection with the recipient
• D. It implements our high level protocol (such as HTTP) to interact with the app which is running at the top of the protocol stack

4. Which of the four layers of TCP/IP makes use of MAC addresses?

• A. The application layer
• B. The transport layer
• C. The network layer
• D. The link layer

5. Name the system that converts between URLs and IP addresses

• A. DNS
• B. IP
• C. TCP
• D. MAC

6. Which of the following best describes the structure of a URL working from left to right

• A. Protocol. FQDN then directories and file name and type
• B. FQDN, directories and protocol
• C. Protocol, file name, directories and domain name
• D. Domain name, subdomain and protocol

7. Why is it beneficial to organise web-based protocols into layers?

• A. A layer can communicate directly with any other layer, simplifying the design of the overall protocol
• B. The layers can be easily reorganised into a different top-to-bottom sequence
• C. The layers can be transmitted separatly across the Internet, and even though they may take a different route to arrive at their destination, the overall transmission will still be successful
• D. It provides a useful abstrraction of a large problem, separating functionality into maintainable subsections that can be understood more easily

8. Which of the following is an invalid IP address?

• A. 123.5.54.98
• B. 56.34.80.0
• C. 101.100.1.2
• D. 34.266.34.89

9. Describe the key features of a Local Area Network (LAN)

• A. It uses hardware such as satellite dishes and 4G
• B. It can cover an extensive geographical area, such as an entire country
• C. It uses technology such as Ethernet tonestablish connections across a single building or campus
• D. It does not enforce any security

10. Which of the following is not a WAN technology?

• A. Wi-Fi
• B. 4G
• C. Underwater fibre-optic cables runnig across the Mediterranean Sea
• D. The public switched telephone network (PSTN)