Denial of Service (DoS) is one type of attack, which of the following action-can perform when it accesses the network Prevent legitimate user from accessing network remotely allow legitimate user to enable hacker to accessing network services Prevent legitimate user from accessing network services allow legitimate user to accessing network services
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- a) Classify the following attacks and their impact on the security goals 1. Assume that you have sent a text file to your friend over the LAN, the file content is viewed by all unauthorized persons. 2. Your friend has received 1000 rupees from your account and later he denied your transaction. 3. Your friend is flooding the fake packets at your wi-Fi access point. 4. Assumed that you have a username and password unethically to log in to the network. b) Assume that you substitute the plain text characters with different characters and send it to your friend. Is your friend required to learn cryptography or stenography techniques to read the hidden text?i._____________is an example of passive network security attack.a) denial of serviceb) replay c) modification of messaged) traffic analysisii. In _________attack, an entity deceives another by falsely denying responsibility for an act a) falsification b) repudiationc) corruption d) intrusioniii. Which one of these cryptographic techniques can be used for both confidentiality and authentication of message or data?a) MACb) Hash Function c) Public Key encryptiond) Symmetric key encryptioniv. Message authentication protects against___________a)passive attack b) active attack c) eavesdropping d) none of the attacksii. Which one is not categorized as an asset of the computer system?• a) Hardware • b) Software • c) Firmware• d) System OperatoA Denial-of-Service (DoS) attack is where an attacker overloads a victim’s network or computer such that normal processing services cannot occur. Mallory launches an attack by manipulating the source address field of an ICMP request and using a network broadcast address as the destination address. What kind of DoS attack is Mallory executing? a. DNS-based DDoS b. DRDoS using UDP c. A ‘Smurf’ attack d. A ‘Ping of Death’ attack
- Subject: Network Security a) A/An____attack overwhelms a system with numerous ICMP messages to exhaust the target system's resources. MAC spoofing ARP cache poisoning ping flood IP spoofing DNS poisoning b) A worm infecting another system in a LAN or across the network is said to be operating in which phase? execution propagation triggering dormant None of the above87. An attacker sits between the sender and receiver and captures the information and retransmits to the receiver after some time without altering the information. This attack is called as .............. a. Denial of service attack b. Masquarade attack c. Simple attack d. Complex attackAs a network administrator, you are already aware of the possible option of using a default trust relationship between a network device and another by a hacker to access an entire network. Which of the following security measures will you use to prevent a possible DoS attack that can be induced by sending high volumes of router advertisement messages? 1. DHCP Snooping 2. CoPP 3. RA guard 4. DAI
- 15) If the form is submitted via GET request using HTTP, can a browser adversary (i.e., one who can locally observe the URLs requested by the user) obtain the password? True False 16) If the form is submitted via POST request using HTTP, can a network adversary obtain the password? True False21) In a pharming attack, the goal of the criminal is to _____. A. steal a victim's email credentials to illegally login into their computer network B. steal the victim's DNS server database entries in order clone sites to steal their information C. steal the victim's network information in order to crash the network D. misdirect website traffic to bogus websites where the victim's information will be stolen 22) What made the Mirai botnet so different from other botnets? A. It attacked highly secure government data. B. It was very small and insignificant. C. It used a variety of devices, not just computers. D. It wasn't different at all.The network address for an organisation’s network is 54.33.112.0/23. Provide the subset of the filter table for a stateless firewall that includes the following rules:- Allows all internal users to establish HTTP with any external hosts but blocks FTP.- Allows external users to browse the company web page at 54.33.112.4- Allow incoming TELNET requests to all organisation hosts apart from those in subnet 54.33.112.0/24THIS IS ALL INFORMATION PROVIDED PLEASE
- The network address for an organisation’s network is 54.33.112.0/23. Provide the subset of the filter table for a stateless firewall that includes the following rules: - Allows all internal users to establish HTTP with any external hosts but blocks FTP. - Allows external users to browse the company web page at 54.33.112.4 - Allow incoming TELNET requests to all organisation hosts apart from those in subnet 54.33.112.0/24 THIS IS ALL INFORMATION PROVIDED PLEASE My last question about has not been responded correctly, please you must provide the subset of the filter table for a stateless firewall that includes the following rules.From the diagram below, consider yourself the administrator of below networks .How to reduce the attack surface from Internet network to other operating systems of hosts on the network 1,2, 3 and 4.You have been hired as a cybersecurity consultant for a company that has recently been breached in a crypto malware attack. According to file server logs, a large number of files on the network have been modified (encrypted). The company is looking for your guidance on the requirements below. Please provide a solution (in your own words) and your reasoning. a/ How to determine which files have been encrypted by the crypto-malware attack? The company would like to know the most efficient way as there are over 100,000 files potentially impacted. b/ What kind of policies and/or training would you suggest as a precautionary measure? c/ The company had some backups in alternate servers, but no consistent backup and recovery plan. The organization has agreed to have an RPO of 1 hour and an RTO of 4 hours. Please suggest the most appropriate backup strategy (full, differential, or incremental) to meet the requirement. d/ The company would like your help with their disaster recovery…