When considering security, what is the common name given to separating your network into discrete entities?

If you read our The need for subnetting was heightened by the desire to free up publicly accessible IPv4 addresses as the internet grew in popularity. Subnetting ended the hugely wasteful practice of assigning 16.7 million precious IPv4 addresses to a single organization (that would never exhaust them) by breaking Class A IPv4 ranges into smaller pieces, but that’s only part of the story. In everyday practice, splitting up private IT networks provides many other benefits as well. Benefits of subnetting on private IT networks 1. Setting up logical divisions Subnetting helps you maintain clean separations within a network. For example, you can define boundaries between different departments in your organization, with one subnet for sales, another for marketing, and a third for engineering. Alternatively, you could divide your network by floors in a building, or even create separate subnets for different device types such as VoIP phones, servers, and workstations. Additionally, your logically separated networks would behave almost as if they were physically separate without the need to re-cable much networking gear to make a change. 2. Improved network security With logical divisions between subnets, you have greater control over who has access to what. For example, in our departmental example, you could easily restrict those in engineering from accessing file server containing sensitive sales information, and prevent sales from accessing a share that houses classified engine...

A computer network comprises two or more computers that are connected—either by cables (wired) or WiFi (wireless)—with the purpose of transmitting, exchanging, or sharing data and resources. You build a computer network using hardware (e.g., routers, switches, access points, and cables) and software (e.g., operating systems or business applications). Geographic location often defines a computer network. For example, a LAN (local area network) connects computers in a defined physical space, like an office building, whereas a WAN (wide area network) can connect computers across continents. The internet is the largest example of a WAN, connecting billions of computers worldwide. You can further define a computer network by the protocols it uses to communicate, the physical arrangement of its components, how it controls traffic, and its purpose. Computer networks enable communication for every business, entertainment, and research purpose. The internet, online search, email, audio and video sharing, online commerce, live-streaming, and social networks all exist because of computer networks. As networking needs evolved, so did the computer network types that serve those needs. Here are the most common and widely used computer network types: • LAN (local area network): A LAN connects computers over a relatively short distance, allowing them to share data, files, and resources. For example, a LAN may connect all the computers in an office building, school, or hospital. Typically,...

There is one big thing to realize about these tables: they are describing relational data - as in, they are describing data that relates to each other. Each of these tables describe data related to a particular student, and many of the tables replicate the same data. When the same data is replicated across multiple tables, there can be interesting consequences. It's often preferable to make sure that a particular column of data is only stored in a single location, so there are fewer places to update and less risk of having different data in different places. If we do that, we need to make sure we have a way to relate the data across the tables, which we'll get to later. How could we figure out the email for each student? We could find the row in the student info table, matching by name. What if 2 students had the same name? (Did you know that in Bali, every person has only 1 of 4 possible first names?) We can't rely on name to look up a student, and really, we should never rely on something like name to identify anything uniquely in a table. I know, this table doesn't look nearly as readable as the old table that had all of information stuffed into every row. But, tables are often not designed to be readable to humans-- they're designed to be the easiest to maintain and least prone to bugs. In many cases, it may be best to split information into multiple related tables, so that there is less redundant data and fewer places to update. I have many questions about this topic....

• • • • • • • • • • • • • • • • • • Exam Development • • • • • • Certification Resources • • • • • • • • • • • • • • For Individuals • • • • • • • For Groups • • • • • • • • • • • • • • • Testing Options • • • • Exam Vouchers • • • Testing Policies and Procedures • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Network Security: What Is It, Why Does It Matter and What Can You Do to Make Networks More Secure? Today, hacks, data breaches, and cyberattacks are more common than ever before. In fact, the number of data breaches that exposed private records CompTIA has done extensive research on cybersecurity, and one Network security is a smaller subset that falls under the larger umbrella of cybersecurity, and it refers to the practice of preventing unauthorized users from accessing computer networks and their associated devices. It involves physically protecting network servers and devices from external threats, as well as taking steps to secure the digital network. In an age of increasingly sophisticated and frequent cyberattacks, network security matters more now than ever before. The Importance of Network Security Network security is vital to Network security is the key to keeping that sensitive information safe, and as more private data is stored and shared on vulnerable devices, network security will only grow in importance and necessity. Experts expect that While each and every member of your organization can take strides to help keep things secure, network s...

An educational institution offering market-relevant and unique specializations in Executive MBA, Graduate Diploma and Graduate Certificate programs A gathering of professionals and experts who discuss on the latest trends and topics An authentic source of information and inspiration KATE is a freeware app, web-based available, granting digital access to training materials. Network segregation is the tool used for dividing a network into smaller parts which are called subnetworks or network segments. You can think of it as the division of rooms when constructing a new house. The most important things to spend time thinking about in this case are the spacing and positioning as well as purposes. Now, getting back to the real effort of network segregation, in most occasions when you need to segregate, you are actually dealing with the security of your network. Essentially, the main purpose of segregation is to limit the access to the network that a group of users or any particular device can have. Besides making sure that valuable information is not shared with unauthorized parties, segregation also decreases the possibility of damage done by a Why is network segregation and segmentation so important? Segregation’s importance has been emphasized a lot during the last few years, especially considering the major data breaches that occurred recently, such as An attacker may try to make connections directly from an already compromised host to a more vulnerable host by utilizing so...

There is one big thing to realize about these tables: they are describing relational data - as in, they are describing data that relates to each other. Each of these tables describe data related to a particular student, and many of the tables replicate the same data. When the same data is replicated across multiple tables, there can be interesting consequences. It's often preferable to make sure that a particular column of data is only stored in a single location, so there are fewer places to update and less risk of having different data in different places. If we do that, we need to make sure we have a way to relate the data across the tables, which we'll get to later. How could we figure out the email for each student? We could find the row in the student info table, matching by name. What if 2 students had the same name? (Did you know that in Bali, every person has only 1 of 4 possible first names?) We can't rely on name to look up a student, and really, we should never rely on something like name to identify anything uniquely in a table. I know, this table doesn't look nearly as readable as the old table that had all of information stuffed into every row. But, tables are often not designed to be readable to humans-- they're designed to be the easiest to maintain and least prone to bugs. In many cases, it may be best to split information into multiple related tables, so that there is less redundant data and fewer places to update. I have many questions about this topic....

If you read our The need for subnetting was heightened by the desire to free up publicly accessible IPv4 addresses as the internet grew in popularity. Subnetting ended the hugely wasteful practice of assigning 16.7 million precious IPv4 addresses to a single organization (that would never exhaust them) by breaking Class A IPv4 ranges into smaller pieces, but that’s only part of the story. In everyday practice, splitting up private IT networks provides many other benefits as well. Benefits of subnetting on private IT networks 1. Setting up logical divisions Subnetting helps you maintain clean separations within a network. For example, you can define boundaries between different departments in your organization, with one subnet for sales, another for marketing, and a third for engineering. Alternatively, you could divide your network by floors in a building, or even create separate subnets for different device types such as VoIP phones, servers, and workstations. Additionally, your logically separated networks would behave almost as if they were physically separate without the need to re-cable much networking gear to make a change. 2. Improved network security With logical divisions between subnets, you have greater control over who has access to what. For example, in our departmental example, you could easily restrict those in engineering from accessing file server containing sensitive sales information, and prevent sales from accessing a share that houses classified engine...

• • • • • • • • • • • • • • • • • • Exam Development • • • • • • Certification Resources • • • • • • • • • • • • • • For Individuals • • • • • • • For Groups • • • • • • • • • • • • • • • Testing Options • • • • Exam Vouchers • • • Testing Policies and Procedures • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Network Security: What Is It, Why Does It Matter and What Can You Do to Make Networks More Secure? Today, hacks, data breaches, and cyberattacks are more common than ever before. In fact, the number of data breaches that exposed private records CompTIA has done extensive research on cybersecurity, and one Network security is a smaller subset that falls under the larger umbrella of cybersecurity, and it refers to the practice of preventing unauthorized users from accessing computer networks and their associated devices. It involves physically protecting network servers and devices from external threats, as well as taking steps to secure the digital network. In an age of increasingly sophisticated and frequent cyberattacks, network security matters more now than ever before. The Importance of Network Security Network security is vital to Network security is the key to keeping that sensitive information safe, and as more private data is stored and shared on vulnerable devices, network security will only grow in importance and necessity. Experts expect that While each and every member of your organization can take strides to help keep things secure, network s...

Question 1 2 pts Malika is a network engineer who is configuring firewalls separating both the Accounting and HR departments from the rest of the business divisions on the local area network (LAN). She wants to allow only certain traffic into those subnets from both internal employees and those working from home. The traffic may include email, chat, and video conferencing. She wants to prevent access to the company intranets in order to protect confidential employee and financial data. How has she configured these firewalls? Sieve Examiner Filter Blocker Question 2 2 pts Geraldine is a freelance network technician. She has been hired to design and build a small office/home office (SOHO) network. She is considering what firewall solution to select, keeping in mind that her client has a tight budget and the network is made up of no more than six nodes. Which of the following is the best solution? O Commercial software firewall O Next-generation firewall Personal hardware firewall integrated in the wireless access point or modem Commercial hardware firewall Question 3 2 pts Jae is a network consultant hired by a small business client. He has been asked to recommend a firewall solution. Given the relatively small size of the infrastructure, he suggests a firewall that provides integrated intrusion detection system/intrusion prevention system (IDS/IPS) functionality because a single device offering multiple functions is cost- and space-effective. What is the solution? O Virtual...

A computer network comprises two or more computers that are connected—either by cables (wired) or WiFi (wireless)—with the purpose of transmitting, exchanging, or sharing data and resources. You build a computer network using hardware (e.g., routers, switches, access points, and cables) and software (e.g., operating systems or business applications). Geographic location often defines a computer network. For example, a LAN (local area network) connects computers in a defined physical space, like an office building, whereas a WAN (wide area network) can connect computers across continents. The internet is the largest example of a WAN, connecting billions of computers worldwide. You can further define a computer network by the protocols it uses to communicate, the physical arrangement of its components, how it controls traffic, and its purpose. Computer networks enable communication for every business, entertainment, and research purpose. The internet, online search, email, audio and video sharing, online commerce, live-streaming, and social networks all exist because of computer networks. As networking needs evolved, so did the computer network types that serve those needs. Here are the most common and widely used computer network types: • LAN (local area network): A LAN connects computers over a relatively short distance, allowing them to share data, files, and resources. For example, a LAN may connect all the computers in an office building, school, or hospital. Typically,...