Part 1 | Part 2 | Part 3 | Part 4 | Part 5 Question 81: Explain the basic steps involved in converging a link state inter network. Answer: Each router floods a link state information advertisement describing its links, the states of its links, and any neighboring routers connected to those links, throughout the […]
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 Question 61: What is a summary route? In the context of static routing, how are summary routes useful? Answer: A summary route is a single route entry that points to multiple subnets or major IP addresses. In the context of static […]
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 Question 41: What is fragmentation? What fields of the IP header are used for fragmentation? Answer: Routers perform fragmentation when a packet is longer than the maximum packet length (Maximum Transmission Unit, or MTU) supported by a data link onto which […]
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 Question 21: What is the primary purpose of a LAN? Answer: The primary purpose of a local-area network is to allow resource sharing. The resources may be devices, applications, or information. Examples of shared resources are files, databases, e-mail, modems, and […]
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 Question 1: Which layer of the OSI model is responsible for reliable connections? Answer: The Transport layer of the OSI model is responsible for reliable connections. Question 2: What is the difference between acknowledgements and handshaking? Answer: Handshaking is used to […]
The Internet would grind to a halt – would not be possible – without a Domain Name System (DNS). In the world of the Internet and TCP/IP, IP addresses are used to route packets from source to destination. A single IP address, for example 192.168.1.19, is not difficult to remember. But trying to learn or […]
An IP address lookup will determine the geolocation of any IP address. The results of the IP address lookup will show you the city, state/region, postal/zip code, country name, ISP, and time zone. This data can be used by various agencies to find the exact owner of any IPv4 or IPv6 address. It can be […]
Are you a mom wishing to offer advice on everything from raising kids, cooking healthy meals, to changing diapers? Then why not start a WordPress website? You’ll be in good company. According to eMarketer, more than 4 million moms write a blog while close to 20 million read one at least once a week. So, […]
Domain Name Service (DNS) is an Internet service that maps IP addresses and fully qualified domain names (FQDN) to one another. In this way, DNS alleviates the need to remember IP addresses. Computers that run DNS are called name servers. Ubuntu ships with BIND (Berkley Internet Naming Daemon), the most common program used for maintaining […]
In the modern day landscape in business, technology is king. We rely on numerous different kinds of technology to run our business and there are even technologies/tools out there to test the performance of other technologies (find out here). So, as you can see, technology is absolutely instrumental in business today. However, one type of […]
In recent years, the smartphone market has witnessed a rapid expansion, and its momentum seems unstoppable. Its accelerated growth is brought on due to the diverse range of applications. Due to Android being a very open model allowing access to many functions on the smartphone, it is believed that Android application developers need to take […]
Internet users are widely using Wi-Fi devices to access Internet. Every year millions of wireless based devices are sold in the market. Out of these most of the devices are vulnerable in their default configuration mode. Since end users are not fully aware of security levels to be set on these devices, these get rendered […]
The most visible features of a Web application that intruders will note and immediately seek to exploit are vulnerabilities in the Web server software itself. No matter the simplicity or strength of the design, no application can stand for very long on a mortally vulnerable server platform. This article seeks to catalog some of the most […]
A number of different tools exist for performing automated vulnerability scans of web applications. These scanners have the benefit of being able to test a large amount of functionality in a relatively short time, and in a typical application are often able to identify a variety of important vulnerabilities. Web application vulnerability scanners automate several of the […]