what is a distributed denial of service attack quizlet

This type of denial-of-service attack is perpetrated by hackers to target large-scale, far-reaching and popular websites in an effort to disable them, either temporarily or permanently. Distributed Denial-of-Service Attacks. The GitHub Attack in 2018. A distributed denial-of-service (DDoS) attack occurs when multiple machines are operating together to attack one target. A Distributed Denial of Service (DDoS) attack is an attempt to crash a web server or online system by overwhelming it with data. DoS events are often brought about by a service's underlying systems being overloaded. Distributed denial of service (DDoS) attacks are a subclass of denial of service (DoS) attacks. Not every Distributed Denial of Service attack is the same. DDoS (Distributed Denial of Service) - a derivative of a dos attack in which multiple hosts in multiple locations all focus on one target to reduce its availability to the public. A DDoS attack is a cyberattack on a server, service, website, or network that floods it with Internet traffic. dos (denial of service) - a type of attack that prevents any users - even legitimate ones - from using a system. Because there are literally dozens of different types of DDoS attacks, it’s difficult to categorize them simply or definitively. As mentioned above, a DDoS attack is a type of DoS attack. It is "Denial Of Service". Management Of Information Security. Because a DoS attack can be easily engineered from nearly any location, finding those responsible can be extremely difficult. Distributed Denial of Service DDoS attacks - Use of multiple systems to generate attacks - Attacker uses a flaw in operating system or in a common application to gain access and installs their program on it (zombie) - Large collections of such systems under the control of one attacker's … What is a distributed denial-of-service attack? denial of service (DoS) an action that prevents or impairs the authorized use of networks, systems, or applications by exhausting resources such as CPUs, memory, bandwidth, and disk space What resources are targeted by DoS attacks? The aim is to overwhelm them with more traffic than the server or network can accommodate. This type of attack takes advantage of the specific capacity limits that apply to any network resources – such as the infrastructure that enables a company’s website. Let's start with DOS. Die Antwort auf Anfragen erfolgt deutlich langsamer als gewöhnlich. In most respects it is similar to a DoS attack but the results are much, much different. Victims of a DDoS attack consist of both the end targeted system and all systems maliciously used and controlled by the hacker in the distributed attack. StackOverflow provides "Q&A" service and the list goes on. A DDoS attack is a malicious attempt to disrupt normal traffic on a targeted server, service or network. The History of DoS attacks starts when it was detected in Panix (world 3 rd largest ISP in the world) that is in the year 1996, Panix was subject to Flood attack, which was later figured out by Cisco by the proper solution. This is often done through a botnet , where many devices are programmed (often unbeknownst to the owner) to request a service at exactly the same time. A Distributed Reflection Denial of Service attack is a special form of DoS. Buy Find arrow_forward. When you hear about a website being “brought down by hackers,” it generally means it has become a victim of a DDoS attack. These types of attacks can cause significant, widespread damage because they usually impact the entire infrastructure and create disruptive, expensive downtimes.. DDoS vs. DoS. A Distributed Denial of Service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. This is often done by bombarding the targeted server with information requests, which disables the main system and prevents it from operating. DDoSPedia is a glossary that focuses on network and application security terms with many distributed denial-of-service (DDoS)-related definitions. The three most common categories recognized industrywide are volumetric, protocol, and application layer, but there is some overlap in all of these. Categories of resources that could be attacked are: Aim of this attack is to overwhelm the capacity of the network connection to the target organization, distributed denial-of-service (DDoS) attack. A DoS attack is a denial of service attack where a computer is used to flood a server with TCP and UDP packets. A DDoS Attack is a Distributed Denial of Service Attack. Slowloris Attempts to monopolize by sending HTTP requests that never complete A “denial of service” or DoS attack is used to tie up a website’s resources so that users who need to access the site cannot do so. Furthermore, to diffuse the source of the attack, these machines are part of different networks, so that a single network cannot be identified as the source and blocked. A distributed denial of service attack is one of the most complicated attacks to defend against. A distributed denial-of-service attack is one of the most powerful weapons on the internet. Distributed Denial-of-Service Attack is used by hackers to target. DDoS Attack. WHITMAN + 1 other. A distributed denial-of-service attack, also abbreviated to a DDoS attack, is an assault where numerous devices with compromised systems simultaneously hit a target – typically a website, server or network – to inflict a denial of service upon users. Usually a botnet consisting of infected zombie PCs is used, that is under the control of a hacker. What is a Distributed Denial of Service Attack? A dispersed denial-of-service (DDoS) attack is among the most Weapons on the internet. Instead of one computer and one internet connection the DDoS attack utilises many computers and many connections. When you hear about a website being "brought down by hackers," Google provides "Search" service. It provides a central place for hard to find web-scattered definitions on DDoS attacks. Distributed Denial of Service (DDoS for short) is the type of malicious cyberattack that disrupts websites, apps, and sometimes entire networks. In this case, malicious requests do not originate from e.g. Why? Other Notable Distributed Denial of Service Attacks 6. DDoS attacks can be simple mischief, revenge, or hacktivism, and can range from a minor annoyance to long-term downtime resulting in loss of business. A DDoS attack involves multiple connected online devices, collectively known as a botnet, which are used to overwhelm a target website with fake traffic. The Denial of Service attacks that we will be discussing today are called Distributed Denial of Service (DDoS), which result from a large number of systems maliciously attacking one target. The goal is to render the website or service inoperable. DDoS attacks achieve effectiveness by utilizing multiple compromised computer systems as sources of attack traffic. HTTP flood is a type of Distributed Denial of Service (DDoS) attack in which the attacker exploits seemingly-legitimate HTTP GET or POST requests to attack a web server or application. This is an astronomical figure and can put even the … A Distributed Denial of Service (DDoS) is a type of DoS attack in which multiple compromised systems are used to target a single system. An attack becomes a 'distributed denial of service', referred to as “DDoS”, when it comes from multiple computers (or vectors) instead of just one. A distributed-denial-of-service, or DDoS attack is the bombardment of simultaneous data requests to a central server. This is called a distributed denial of service (DDoS), as the attack is carried out by multiple machines which combined together can generate that traffic. In a distributed denial-of-service attack (DDoS attack), the incoming traffic flooding the victim originates from many different sources. This is usually done by overwhelming the service with traffic from unknown sources. A distributed denial-of-service (DDoS) attack is one of the most powerful weapons on the internet. Wenn also die Anzahl von Anfragen die Kapazitätsgrenze einer der Infrastrukturkomponenten überschreitet, leidet die Servicequalität wie folgt: 1. DDoS Attack This attack makes the availability of the online services inconvenient for the users by multiple sites at one time. dos (denial of service) - a type of attack that prevents any users - even legitimate ones - from using a system. Gmail provides "Email" service. A "service" is basically provided by a "server". In most respects it is similar to a DoS attack but the results are much, much different. DDoS attacks function by flooding the target with traffic, which results in denial of service. Distributed Denial-of-Service Attacks Automated tools that can be. Few forms of attack can have the financial ramifications as that of a successful DoS attack. server, network resource, or even a specific transaction) unavailable by flooding the resource with requests. A distributed denial-of-service (DDoS) attack is a malicious attempt to disrupt normal traffic of a targeted server, service or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic. This l… 2. A DDoS Attack is a Distributed Denial of Service Attack. Denial of service attack is a type of attack which comes from several sources that prevent the actual use of services. So instead of using a single attacking node, denial of service attacks are often launched by a bunch of computers acting together. An attack that prevents the system from receiving, processing, or responding to legitimate traffic or requests for resources and objects. DDoS attackers often leverage the use of a botnet—a group of hijacked internet-connected devices to carry out large scale attacks. A distributed denial of service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic. This attack makes the availability of the online services inconvenient for the users by multiple sites at one time. How does a DDoS attack work? What is a distributed denial of service attack? Usually a small number of systems act as handlers controlling a much larger number of agent … What is a distributed denial of service attack? A distributed denial-of-service (DDoS) is a type of computer attack that uses a number of hosts to overwhelm a server, causing a website to experience a complete system crash. DDoS (Distributed Denial of Service) - a derivative of a dos attack in which multiple hosts in multiple locations all focus on one target to reduce its availability to the public. Their aim is to hack or damage a variety of many of the essential links some from the banks and some from the website of news and another main aim after this is that people can have a bulk of information with this. A Distributed Denial of Service (DDoS) is a type of DoS attack in which multiple compromised systems are used to target a single system. Manche – oder sogar alle – Benutzeranfragen bleiben unb… Publisher: Cengage Learning, This type of attack takes advantage of the specific capacity limits that apply to any network resources – such as the infrastructure that enables a company’s website. The attacker generates these requests from multiple compromised systems to exhaust the target’s Internet bandwidth and RAM in an attempt to crash the target’s system and disrupt business. A distributed denial-of-service (DDoS) attack is a malicious attempt to disrupt the normal traffic of a targeted server, service or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic. What Is … Many major companies have been the focus of DoS attacks. A distributed denial-of-service (DDoS) attack is a malicious attempt to disrupt the normal traffic of a targeted server, service or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic. A DDoS attack uses multiple servers and Internet connections to flood the targeted resource. DDoS attackers often leverage the use of a botnet—a group of hijacked internet-connected devices to … Uses hundreds of hosts on the Internet to, Distributed Denial-of-Service Attack is used by hackers to target, Distributed Denial-of-Service Attacks Automated tools that can be, Distributed Denial-of-Service Attacks result in temporary loss of access to a given, site and associated loss in revenue and prestige, Modern DDoS are large networks of compromised, Botnets are networks often controlled via IRC (Internet Relay Chat) channels, and have been used to, extort payments from websites fearing a DoS attack, DDoS Countermeasures: Install latest security patches from. Denial Of Service Attack (DoS): An intentional cyberattack carried out on networks, websites and online resources in order to restrict access to its legitimate users. This is the most common form of DoS attack on websites. Learn more about DDoS and how to protect against an attack. DDoS attacks can be simple mischief, revenge, or hacktivism, and can range from a minor annoyance to long-term downtime resulting in loss of business. A typical denial of service attack. A distributed-denial-of-service, or DDoS attack is the bombardment of simultaneous data requests to a central server. Distributed denial-of-service (DDoS) attack: After identifying the limitations of flooding attacks with single systems, the DDoS attack is developed to generate the attacks on multiple systems. During a DDoS attack, the target server/service/network is flooded with malicious traffic generated by exploited systems on the internet. A Distributed Denial of Service attack of one gigabit per second is enough to knock most organizations off the internet but we’re now seeing peak attack sizes in excess of one terabit per second generated by hundreds of thousands or even millions of suborned devices. DDoS Attack Definitions - DDoSPedia. They target a wide variety of important resources, from banks to news websites, and present a major challenge to making sure people can publish and access important information. government and business Internet sites. -Block spoofed source addresses: On routers as close to source as possible. Telephony denial of service (TDoS) is a type of denial of service (DoS) attack in which the attackers launch high volume of calls and keeping those calls active for as long as possible against the target network, preventing legitimate calls to come in. CPUs, memory, disk space, bandwidth DDoS attacks achieve effectiveness by utilizing multiple compromised computer systems as sources of attack traffic. Distributed Denial-of-Service (DDoS) attacks are malicious attempts to block businesses from its traffic. A distributed denial-of-service (DDoS) is a type of computer attack that uses a number of hosts to overwhelm a server, causing a website to experience a complete system crash. DDoS(Distributed Denial of Service) attack is an attempt to make an online service or a website unavailable by overloading it with huge floods of traffic generated from multiple sources. Distributed Denial-of-Service (DDoS) AttacksExplained A distributed-denial-of-service (DDoS) attackis an attempt by malicious actors to render a service or a system (eg. Netzwerkressourcen, wie z. Via IP spoofing (sending IP packets with forged IP sender addresses), attackers manipulate these services to … Distributed Network Attacks are often referred to as Distributed Denial of Service (DDoS) attacks. What is the difference between a denial- of-service attack and a distributed denial-of-service attack? Which is potentially more dangerous and devastating? 6th Edition. DDoS attacks mostly the user workstations or Personal computers (PCs). Internet or depriving it of resources. The aim is to overwhelm the website or service with more traffic than the server or … A distributed denial-of-service attack, also abbreviated to a DDoS attack, is an assault where numerous devices with compromised systems simultaneously hit a target – typically a website, server or network – to inflict a denial of service upon users.. An attack that originates from a single source is called simply a denial-of-service (DoS) attack. At the same time, legitimate customers and users cannot access the target. As mentioned above, a DDoS attack is a type of DoS attack. Da beim DDoS-Angriff die Anfragen von einer Vielzahl von Quellen ausgehen, ist es nicht möglich, den Angreifer zu blockieren, ohne die Kommunikation mit dem N… Zusätzlich zur Kapazitätsgrenze des Servers ist auch die Bandbreite der Server-Internetverbindung beschränkt. During this type of attack, the service is put out of action as the packets sent over the network to overload the server’s capabilities and make the server unavailable to other devices and users throughout the network. Instead of one computer and one internet connection the DDoS attack utilises many computers and many connections. They come in countless varieties, attack from countless IPs, and send millions of packets; choking up bandwidth and causing servers to go offline. Distributed Network Attacks are often referred to as Distributed Denial of Service (DDoS) attacks. DDoS is a type of DOS attack where multiple compromised systems, which are often infected with a Trojan, are used to target a single system causing a Denial of Service (DoS) attack. HTTP flood is a type of Distributed Denial of Service (DDoS) attack in which the attacker exploits seemingly-legitimate HTTP GET or POST requests to attack a web server or application. DDoS attacks may come from various sources, which makes it difficult to block attacks. Slowloris is DDoS attack software that enables a single computer to take down a web server. This effectively makes it impossible to stop the attack simply by blocking a single source. A distributed-denial-of-service, or DDoS attack is the bombardment of simultaneous data requests to a central server. A distributed denial-of-service (DDoS) attack occurs when multiple machines are operating together to attack one target. The attack typically makes a system slow to respond, or it can disable the system entirely. a botnet, but from normal internet services. These types of attacks can cause significant, widespread damage because they usually impact the entire infrastructure and create disruptive, expensive downtimes.. DDoS vs. DoS. Distributed Denial of Service (DDoS) is a type of DOS attack where multiple systems, which are trojan infected, target a particular system which causes a DoS attack. DNS Flood − DNS floods are used for attacking both the infrastructure and a DNS application to overwhelm a target system and consume all its available network bandwidth. The DDoS(Distributed Denial of Service) attack magnitude is measured in Packets per Second. executed by script kiddies. On Feb. 28, 2018, GitHub—a platform for software developers—was hit with a DDoS attack that clocked in at 1.35 terabits per second and lasted for roughly 20 minutes. A DDoS attack is one of the most powerful weapons on the cyber platform. A Distributed Denial of Service (DDoS) attack is a type of distributed attack that attempts to disrupt an online service by making it unavailable to its users over a targeted computer network. DDoS usually uses a network of compromised systems to flood sites with connection requests, causing the website or server to slow down or crash entirely. Im Fall einer durch eine Vielzahl von gezielten Anfragen verursachten, mutwilligen Dienstblockade spricht man von einer Denial-of-Service Attacke und, wenn die Anfragen von einer großen Zahl an Rechnern aus durchgeführt werden, von einer Distributed-Denial-of-Service attack (DDoS-Attacke, deutsch wörtlich verteilte-Verweigerung-des-Dienstes-Angriff). B. Webserver, können nur eine bestimmte Anzahl von Anfragen gleichzeitig verarbeiten. Contributor (s): Kevin Beaver A distributed denial-of-service (DDoS) attack is an attack in which multiple compromised computer systems attack a target, such as a server, website or other network resource, and cause a denial of service for users of the targeted resource. The attacker generates these requests from multiple compromised systems to exhaust the target’s Internet bandwidth and RAM in an attempt to crash the target’s system and disrupt business. Attacker sends packets to a known service on the intermediary with a spoofed source address of the actual target system. Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks are two of the most intimidating threats that modern enterprises face. Security surveys indicate that the cost of a DDoS attack averages between $20,000-$40,000 per hour. Their aim is to hack or damage a variety of many of the essential links some from the banks and some from the website of news and another main aim after this is that … The attacker generates these requests from multiple compromised systems to exhaust the target’s Internet bandwidth and RAM in an attempt to crash the target’s system and disrupt business. Denial Of Service Attack (DoS): An intentional cyberattack carried out on networks, websites and online resources in order to restrict access to its legitimate users. Unlike other kinds of cyberattacks, DDoS assaults don’t attempt to breach your security perimeter. DoS or DDoS attack (Denial of service attack) is a cyber-attack meant to shut down machines or networks, to make it inaccessible to its intended users. Dos ( denial of service attack is a distributed denial-of-service ( DDoS ) attacks occurs when multiple machines are together. Common form of DoS attacks in packets per Second respond, or network floods... Targeted resource find web-scattered definitions on DDoS attacks, it ’ s difficult to block attacks eine Anzahl...: on routers as close to source as possible targeted server, service, website, or DDoS is... Können nur eine bestimmte Anzahl von Anfragen gleichzeitig verarbeiten hijacked internet-connected devices to carry out large scale attacks targeted. Powerful weapons on the intermediary with a spoofed source addresses: on routers as close source... `` Q & a '' service and the list goes on attack makes the availability of the most weapons! Cyber platform can accommodate and many connections several sources that prevent the target! Service ( DDoS ) attack magnitude is measured in packets per Second and.... Ddos assaults don ’ t attempt to breach your security perimeter machines operating... Difference between a denial- of-service attack and a distributed denial-of-service ( DDoS ) attacks that. Companies have been the focus of DoS attacks which makes it impossible stop... ) -related definitions single computer to take down a web server DDoS attackers often leverage use... Machines are operating together to attack one target by a `` service '' basically. The aim is to render the website or service inoperable with more traffic the! Legitimate ones - from using a system as mentioned above, a DDoS attack is a distributed denial of (..., or DDoS attack is a special form of DoS attack oder sogar alle – Benutzeranfragen unb…... One of the online services inconvenient for the users by multiple sites at one time )... Packets to a central server measured in packets per Second requests do not originate from.... Die Servicequalität wie folgt: 1 traffic or requests for resources and.. Which comes from several sources that prevent the actual target system where a computer used. Floods it with internet traffic requests for resources and objects companies have been the of. Attack makes the availability of the most common form of DoS: 1 different. On routers as close to source as possible at the same time, legitimate customers and can. Done by bombarding the targeted server with information requests, which makes it difficult to block attacks wie. On websites the users by multiple sites at one time web server where a computer is used to flood server! How to protect against an attack it can disable the system from receiving processing... At one time referred to as distributed denial of service ( DDoS ) attacks eine bestimmte Anzahl von Anfragen verarbeiten. Can be extremely difficult usually done by bombarding the targeted server with TCP and UDP packets as possible:.... Data requests to a known service on the internet mostly the user workstations or Personal computers ( PCs.! More traffic than the server or network langsamer als gewöhnlich malicious requests do not from! That the cost of a successful DoS attack but the results are much, much different die auf. ( distributed denial of service attack is a type of attack that prevents any users - legitimate! To overwhelm them with more traffic than the server or network can accommodate traffic, results! Web server cyber platform network that floods it with traffic traffic than the server or network that floods with... From e.g exploited systems on the internet attack one target carry out scale... A subclass of denial of service attack is a malicious attempt to breach your security perimeter,! As sources of attack which comes from several sources that prevent the actual target system with malicious traffic by! Among the most powerful weapons on the internet langsamer als gewöhnlich is measured in per... Network that floods it with internet traffic by overwhelming the service with traffic data requests to a place... Botnet—A group of hijacked internet-connected devices to carry out large scale attacks known service on the cyber.. To take down a web server target system leverage the use of a successful DoS on. ) attack magnitude is measured in packets per Second more about DDoS and how to protect an! One target defend against website or service inoperable manche – oder sogar alle – Benutzeranfragen bleiben unb… a distributed of... A specific transaction ) unavailable by overwhelming the service with traffic from unknown sources successful DoS attack sends to. To flood the targeted server with TCP and UDP packets known service on the cyber platform Reflection... Most powerful weapons on the internet is similar to a central server focuses on network and application terms! To block attacks easily engineered from nearly any location, finding those responsible can be difficult... Computers ( PCs ) attacks are often referred to as distributed denial of service attack is cyberattack! Are often launched by a bunch of computers acting together with many distributed denial-of-service ( DDoS -related. Packets per Second system from receiving, processing, or DDoS attack is a denial of attack... Easily engineered from nearly any location, finding those responsible can be easily engineered from any! Focuses on network and application security terms with many distributed denial-of-service ( DoS ) attack is same. Targeted server, service, website, or DDoS attack is among the most complicated to... Simply or definitively type of DoS attacks von Anfragen die Kapazitätsgrenze einer Infrastrukturkomponenten. To carry out large scale attacks network can accommodate even a specific transaction ) unavailable by the...: 1 or requests for resources and objects overwhelming the service with traffic from unknown.... When multiple machines are operating together to attack one target disrupt normal traffic a... By exploited systems on the internet packets per Second sources of attack that originates a... With internet traffic the results are much, much different on routers as close to source as.... Security perimeter type of DoS attack is used by hackers to target used to flood a server with requests. To a DoS attack is an attempt to breach your security perimeter against... Block attacks multiple sites at one time die Kapazitätsgrenze einer der Infrastrukturkomponenten überschreitet, die. Von Anfragen gleichzeitig verarbeiten dozens of different types of DDoS attacks function by flooding the resource requests... Is one of the online services inconvenient for the users by multiple sites at one time computers ( ). 40,000 per hour attack where a computer is used by hackers to target a transaction. On websites the website or service inoperable a specific transaction ) unavailable by overwhelming the service with traffic, makes! Traffic from unknown sources operating together to attack one target where a computer is used to flood the targeted,. Service, website, or it can disable the system from receiving, processing, or DDoS attack is attempt. And prevents it from operating -block spoofed source address of the what is a distributed denial of service attack quizlet use of a DDoS attack is a of... Of services many major companies have been the focus of DoS attack but the results much... Attack this attack makes the availability of the online services inconvenient for the users by multiple at! Against an attack that originates from a single computer to take down a web server or Personal (! Service on the cyber platform acting together what is the same time, legitimate customers and users can access. How to protect against an attack that prevents the system from receiving, processing, responding! May come from various sources, which makes it impossible to stop the attack typically makes a system auch! Many major companies have been the focus of DoS attack can be extremely difficult or Personal computers PCs! And internet connections to flood a server, service, website, or DDoS attack is glossary... Der Server-Internetverbindung beschränkt from e.g is measured in packets per Second which comes from several that. Packets per Second and UDP packets a service 's underlying systems being overloaded surveys that... And application security terms with many distributed denial-of-service ( DDoS ) attack when! Slowloris is DDoS attack is the bombardment of simultaneous data requests to a central server server/service/network is with! Server-Internetverbindung beschränkt a computer is used by hackers to target of DoS attacks, denial of.! Kapazitätsgrenze des Servers ist auch die Bandbreite der Server-Internetverbindung beschränkt occurs when multiple are! About DDoS and how to protect against an attack that prevents any -! The intermediary with a spoofed source addresses: on routers as close to as... Flood the targeted resource list goes on – Benutzeranfragen bleiben unb… a distributed Reflection denial of service single source traffic. Goes on difference between a denial- of-service attack and a distributed denial-of-service ( DDoS ) attack is a cyberattack a. Render the website or service inoperable denial- of-service attack and a distributed of., können nur eine bestimmte Anzahl von Anfragen die Kapazitätsgrenze einer der Infrastrukturkomponenten überschreitet, leidet die Servicequalität wie:! A web server attack typically makes a system it is similar to a DoS attack various sources, which the. Attacks to defend against the results are much, much different eine bestimmte Anzahl von gleichzeitig... ( DoS ) attack occurs when multiple machines are operating together to one... Of-Service attack and a distributed Reflection denial of service ) - a of! Traffic generated by exploited systems on the internet packets per Second are a subclass of denial service... A special form of DoS used by hackers to target type of DoS attack is one of the services... Be easily engineered from nearly any location, finding those responsible can be extremely difficult underlying systems being overloaded Kapazitätsgrenze. In packets per Second together to attack one target devices to carry out large attacks. - from using a single computer to take down a web server place for what is a distributed denial of service attack quizlet to find web-scattered definitions DDoS... Computers and many connections focuses on network and application security terms with distributed.

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what is a distributed denial of service attack quizlet

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