How it Affect / Attack. a. Emails may contain links to Websites that are infected with Malware. b. It is typically carried out by Email sporting or instant messaging. c. It directs users to fake Website, whose looks and feelings are almost identical to the legitimate one.
This block performs the flow table (hash table) lookup, updates the per port packet and byte counters and reads the corresponding actions. If the packet header does not match the corresponding hash table entries, then it is considered as a table miss and the packet is dropped. First, the structure of hash table and hashing function are described and then the functionality of exact match is described. The hash table is constructed using 512 deep and 64 bit wide block RAM (BRAM). The hash table can support 32 different flows with each flow occupying 16 entries in the hash table.
One false move can bring about reaching malware or having touchy information spilled. The Newstarads.com distributed to clients ' machine through misleading systems. The fundamental spread vector is bundling. The shady instrument hitches a ride with pirated applications, shareware & freeware which mediate the installation. The host is alluded to as a download customer.
10. Describe the operation of virtual memory management. Basically it is a method that the OS uses to minimize the amount of process code and data stored in memory by dividing pages and memory into frames. This also frees up the memory for other processes to use. Virtual memory management divides a program into partitions called pages.
The preceding figures shows the Fibonacci and Galois implementations of maximal length shift register m-sequences. As can be seen in these figures, m-sequences contain m shift registers. The shift register set is filled with an m-bit initial seed that can be any value except 0 (if the m bits in the m shift registers are all zero, then it is a degenerate case and the output of the generator is 0). The following examples demonstrate bit generation. 1.
Storage devices are one of the important components of any computing device. They store virtually all the information and applications on a computer, except hardware things. They are available in different form factors depending on the type of underlying device. For example, a standard computer has multiple storage devices including RAM, cache, a hard disk, an optical disk drive and externally connected USB drives. There are two different types of storage devices: • Primary Storage Devices: Generally smaller in size, are designed to hold data temporarily and are internal to the computer.
Featuring a complete file or directory that is composed of a file name, size, date modified, owner, group, and mode or attributes. $ Ls -l / etc i. Show all files and directory contents. This argument will cause the process run a little long, if the process will be terminated can use ^ c $ Ls -R / usr 10: Viewing the file type $ File $ File * $ File / bin / ls 11: Copying files a. Copying a file.
1:- Penetration Testing It is the process of trying to gain unauthorized access to authorized resources, systems and applications. Penetration testing is also known as an ethical hacking as “breaking into your own system to see how hard it is to do”. Network security measurement is the task which aims at supplying the scanning to check the security flaws and security threats in applications and networks. 2:- Why perform penetration testing • Test network or system using the tools and techniques that attackers use. • Demonstrate at what depth vulnerabilities can be exploited.
The following describes the conversion form digital to binary and vice-versa. (Mark Prather, n.d.) 1.2. The fetch-decode-execute cycle of a computers CPU can be explained as follows: Machine language is the lowest level language (binary). Computers can only execute machine code, so the CPU needs to fetch machine code from memory, decode the code into the correct software instructions and then execute the instruction. This is called the fetch-decode-execute cycle.
4.4.3. Access Accusations of any system is done by the ability of knowing the attributes of system design, configuration, deployment, and know about the sending or receiving data to/from a component of any system from the attacker’s location. 4.4.4. Vulnerabilities Weaknesses, insecure network, defects, in any SCADA system that can be increase the access of unauthorized advantages. A single defect allow an attacker to gain information that defect is define as vulnerability.
31. Which level of RAID refers to disk mirroring with block striping? a) RAID level 1 b) RAID level 2 c) RAID level 0 d) RAID level 3 Answer: a 32. A unit of storage that can store one or more records in a hash file organization is denoted as a) Buckets b) Disk pages c) Blocks d) Nodes Answer: a 33. The file organization which allows us to read records that would fulfill the join condition by using one block read is a) Heap file organization b) Consecutive file organization c) Clustering file organization d) Hash file organization Answer: c 34.
This unique characters, otherwise called signatures can be a byte pattern in the virus. This is usually done using the AV software, the AV software uses the signature obtained from the signature database to detect the malware, and when a match is gotten, the AV software then alerts and prompts the user to repair or remove the file. - - Heuristic-based Detection: unlike the signature based detection, the heuristic-based detection is mainly designed to detect previously undetected or unknown viruses. Heuristics based detection detect viruses based on how they behave; that is to say the heuristic blocks the action of a file that it’s not behaving the way it is known to behave using sandbox techniques from a heuristic scanner.. - - SQL (Structured Query Language) Injection is when malicious attackers make use of SQL statements to interact with a database. They have having the ability to write and delete data in the database, the attackers cause damage by entering different from what its expected.