1. Which of the following devices are used in networking? Check all that apply.
- Routers
- Hubs
- Switches
- TCP
2. Which one of these are a valid IPv4 address? Check all that apply.
- 345.0.24.6
- 255.255.255.0
- 1.1.1.1
- 54.45.43.54
Explanation: There does not seem to be a list of IPv4 addresses that you have supplied for us to verify. If you have certain IPv4 addresses in mind, I would appreciate it if you could offer them to me so that I can determine whether or not they are legitimate. On the other hand, if you are looking for instances of IPv4 addresses that are legitimate,
3. Devices on a network are identified by which of the following?
- Ethernet cable
- MAC address and IP address
- Username and IP addresses
- ISPs and IP addresses
Explanation: Identification of devices on a network is accomplished via the use of their Internet Protocol (IP) addresses. An Internet Protocol (IP) address is a numerical designation that is issued to every device that is linked to a computer network that conducts communication using the Internet Protocol. Devices on the network are able to transmit and receive data to and from one another thanks to these unique identities, which act as a means of communication between the devices.
4. Which statement is true about the Internet and the World Wide Web?
- The Internet is the World Wide Web.
- The Internet is a way to access the World Wide Web.
- The World Wide Web is the only way to access the Internet.
- The World Wide Web is a way to access the Internet.
Explanation: "The Internet is the infrastructure that enables global communication and networking, while the World Wide Web is a system of interlinked hypertext documents accessible via the Internet."
The globe Wide Web (WWW) is a specialized system of documents (web pages) that are connected together and accessible via the Internet. This phrase appropriately differentiates between the more general idea of the Internet, which is the underlying infrastructure linking networks all over the globe, and the World Wide Web (WWW).
5. You’re having trouble connecting to the Internet, so you call your Internet Service Provider for help. They need to know the permanent unique identifier of your networking device, to help them troubleshoot. What are they asking for?
- MAC address
- IP address
- URL address
- ISP address
Explanation: It is most probable that they are requesting the Media Access Control (MAC) address of the networking device that you are using. An identification that is both permanent and one-of-a-kind, the Media Access Control (MAC) address is issued to the network interface card (NIC) of a device, such as a computer, router, or modem. On a local network, it serves as a means of communication and is separate from the Internet Protocol (IP) address. When you provide the Internet Service Provider with the MAC address, it might assist them in troubleshooting and identifying the precise networking equipment that you are using on their network.
6. Which statements are true about routers? Check all that apply.
- A router utilizes network protocols to help determine where to send data packets.
- A router connects devices together and helps direct network traffic.
- A router can only send data to another computer that’s on the same network.
- A router is a set of components that makes up computer networking.
7. What is http://www.google.com an example of?
- URL
- ICANN
- ISP
- HTTP
Explanation: As an illustration of a URL (Uniform Resource Locator), the website http://www.google.com is an example. One kind of web address is known as a URL, and its purpose is to identify the specific location of a resource on the Internet. In this particular instance, the letter "http" denotes the protocol that is being used, which is the Hypertext Transfer Protocol. The domain name "www.google.com" denotes the location of a particular resource that can be found on the World Wide Web. Internet resources, such as web pages, pictures, or files, may be uniquely identified and located on the Internet via the use of the Uniform Resource Locator (URL).
8. What was the main limitation of computer networking that the invention of the World Wide Web solved in the 1990s?
- The TCP/IP protocol could only be used in universities, governments, and businesses.
- Networks couldn’t talk to each other.
- People could only receive the information in the form of text.
- People around the world could not send data to one another.
Explanation: in the 1990s, the problem of making it easier to obtain and navigate information was addressed. Users were needed to have a solid grasp of certain protocols and instructions in order to navigate and access information on the Internet prior to the advent of the World Wide Web. Navigating and accessing information on the Internet was mostly text-based.
The development of the World Wide Web, which included a graphical user interface and made use of hyperlinks, made it substantially simpler for people to explore the Internet and get the information that they were looking for. Web browsers and the Hypertext Transfer Protocol (HTTP) made it possible for users to click on links, move between sites, and access multimedia material in a more natural and straightforward manner. Access to information was made more accessible to the general public as a result of this discovery, which also played a significant part in the broad adoption of the Internet for both personal and professional purposes.
9. You need to update your router settings, so you log into the administration panel, whose Internet Protocol (IP) address is 192.168.0.1. Which IP version is this?
- IPv1
- IPv6
- IPv2
- IPv4
Explanation: As an example of an IPv4 (Internet Protocol version 4) address, the IP address 192.168.0.1 is taken into consideration. There are four sets of numbers that make up an IPv4 address, and each set may range anywhere from 0 to 255. These sets are separated by dots. Despite the fact that the number of IPv4 addresses that are accessible has decreased as a result of the expansion of the Internet, Version 4 of the Internet Protocol (IPv4) was the first version of the protocol to be extensively implemented and continues to be actively used today.
10. Which statement is true about computer security?
- Computer security is everyone’s responsibility.
- Computer security is only necessary for governments and big businesses.
- Computer security is the job of specialized security engineers.
- Computer security does not affect the gaming industry.
Explanation: There is truth to this assertion. Strong and one-of-a-kind passwords should be used for each and every online account. This is a solid security practice. It is common practice to use a mix of capital and lowercase letters, numbers, and special characters in the creation of strong passwords. This combination makes the passwords more resistant to efforts to hack them. It is also possible to avoid a security breach on one account from impacting other accounts by simply using separate passwords for each of your accounts.
11. What protocol allows us to use a domain name like google.com instead of an IP address?
- NAT
- TCP/IP
- DNS
- ICMP
Explanation: The Domain Name System (DNS) is the technology that enables us to use a domain name rather than an IP address. For example, we may use google.com as such a domain name. The Domain Name System (DNS) is a hierarchical and distributed naming system that converts domain names that are readable by humans (like www.google.com) into Internet Protocol (IP) addresses. These IP addresses are used by computers to identify each other on a network. Domain name system (DNS) allows users to access websites and other resources on the Internet by utilizing domain names that are simple to remember, as opposed to needing to learn numeric Internet Protocol (IP) addresses.
12. What type of address do computers use to find something on a network?
- URL address
- IP address
- MAC address
- ISP address
Explanation: The Internet Protocol address, or IP address, is an identifier that computers use to locate and interact with other devices that are connected to a network. An Internet Protocol (IP) address is a one-of-a-kind identification that is assigned to a device that is connected to a network. This enables data to be sent and received between devices. When it comes to routing data across a network and ensuring that it reaches its intended destination, Internet Protocol (IP) addresses are very necessary.
13. You’re browsing the Web, and type in http://www.Coursera.com in the address line. Instead of the website, an error screen appears. You type in 54.174.155.206, and the Coursera website comes up. What’s the most likely reason for this?
- Web addresses must be entered in lowercase
- Address line is for the IP address only, not the domain name
- There’s a problem in your network’s DNS configuration
- There’s a problem with your internet connection
Explanation: It is quite probable that there is a problem with the resolution of the Domain Name System (DNS), which is the most plausible explanation for this behavior. The Domain Name System (DNS) is responsible for converting the domain name (www.Coursera.com) into its associated Internet Protocol (IP) address when you write "http://www.Coursera.com" into the address line of your home computer. In the event that there is a problem with the DNS resolution, it is possible that your computer will be unable to locate the right IP address that is linked with the domain.
Through the use of the specified numerical address, you are able to avoid the DNS resolution stage and immediately visit the website. This is accomplished by typing the IP address directly, which is 54.174.155.206.
You may be experiencing DNS difficulties for a number of reasons, including temporary problems with your DNS server, misconfigurations, or problems with the DNS service provided by your Internet Service Provider. If the problem continues, you may wish to check the DNS settings on your computer or get in touch with your Internet service provider for help.
14. What was the biggest problem with the earliest version of the Internet in the late 1960s?
- Networks couldn’t talk to each other
- There was no way to remotely access any computer
- The TCP/IP protocol could only be used in universities, governments, and business.
- Computers were too big and bulky for accessing the internet
Explanation: The absence of established communication protocols was one of the most significant issues that hindered the development of the first iteration of the Internet, which was developed in the late 1960s. As a result of the fact that many research institutes and organizations were establishing their own networks with their own proprietary protocols, there was no common standard for communication across these networks.
In order to find a solution to this problem, the establishment of standard communication protocols became absolutely necessary. This ultimately resulted in the development of the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which served as the basis for the establishment of the contemporary Internet. The TCP/IP protocol suite made it possible to standardize communication across a wide variety of networks, which ultimately led to the development of the interconnected and extensible Internet that we are familiar with today.
15. What are the drawbacks of purchasing something online? Check all that apply.
- Product selection is not as big as what’s available in physical store locations
- Personal buying preferences can be tracked and used to bombard you with excessive marketing
- Someone can use your photographs in their own business and not share the profits with you.
- Confidential information like your credit card number can be stolen and used by someone else.
16. What do we call data that’s broken down into bits and sent through a network?
- Pages
- Binary
- Memory
- Packets
Explanation: In common parlance, the term "digital data" refers to information that has been disassembled into individual bits and sent across a network. Binary digits, also known as bits, are the basic units of digital information. When it comes to networking, this digital data is often conveyed in the form of binary digits. Using a variety of network protocols and communication methods, these bits make their way through the architecture of the network until they arrive at their final destination, where they are reassembled into data that has some kind of significance.
17. What is known as networking in the IT field? Check all that apply.
- Building Networks
- Joining professional networks
- Designing networks
- Managing networks
18. Which of the following cables are used in networking? Check all that apply.
- Ethernet
- HDMI cable
- Auxiliary cable
- Fiber optic cable
19. True or false: You can create a network with two computers.
- True
- False
Explanation: Indeed. Two computers may be used to establish a network if they are working together. In this kind of network, which is sometimes referred to as a "peer-to-peer" network, the two computers are directly linked to each other in order to have the ability to interact and share resources. Even while bigger networks would need extra equipment like routers and switches, it is still possible to set up a simple network consisting of just two computers for a variety of reasons, including the exchange of files and the participation in online games.
20. Which protocol is used to handle delivery of information from one network to another?
- Hyper Text Transfer Protocol
- Transmission Control Protocol
- Internet Protocol
- File Transfer Protocol
Explanation: As the name suggests, the Internet Protocol (IP) is the protocol that is responsible for managing the transmission of data from one network to another. Internet Protocol (IP) is a fundamental protocol that is part of the Internet Protocol Suite. Its primary function is to assign addresses to data packets and to route them in such a way that they may be sent across networks and delivered to the locations that they are meant to reach. It makes it possible for devices that are connected to various networks to interact with one another and share information across the general Internet in a standardized manner.
21. Which Internet Protocol version is 100.0.0.256?
- IPv6
- IPv2
- Not a valid IP address
- IPv4
Explanation: Due to the fact that each octet in an IPv4 address must be within the range of 0 to 255 (inclusive), the IP address "100.0.0.256" does not qualify as a valid IP address. Specifically, the number "256" is outside of the acceptable range for an octet in IPv4 in this instance.
All of the octets of an IPv4 address should fall inside the range of 0 to 255 appropriately. When you come across an IP address that has a value that is more than 255 in any of the octets, you should know that it is not a legitimate IPv4 address.