{"id":623,"date":"2024-12-05T12:59:59","date_gmt":"2024-12-05T12:59:59","guid":{"rendered":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/?post_type=product&#038;p=623"},"modified":"2025-02-18T15:02:56","modified_gmt":"2025-02-18T15:02:56","slug":"ocr-a-level-h446-slr-09-compression-encryption-hashing","status":"publish","type":"product","link":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/product\/ocr-a-level-h446-slr-09-compression-encryption-hashing\/","title":{"rendered":"OCR A level (H446) SLR 09 \u2013 Compression, Encryption &#038; Hashing"},"content":{"rendered":"<p>It includes:<\/p>\n<ul>\n<li>Student Learning Record (A3 version in word)<\/li>\n<li>Student Learning Record (PDF version)<\/li>\n<li>Student Learning Record (PowerPoint version)<\/li>\n<li>Set of student activities and workshops with answers<\/li>\n<li>Answers to the exam questions from the back of the SLR<\/li>\n<li>Teacher Marking Checklist<\/li>\n<\/ul>\n<p>This topic covers:<\/p>\n<p>H446<\/p>\n<ul>\n<li>1.3.1 a-d Compression, Encryption and Hashing<\/li>\n<\/ul>\n<p>Specific knowledge required for A Level:<\/p>\n<ul>\n<li>Candidates need to understand the need for compression, especially when transferring data via the<br \/>\nInternet.<\/li>\n<li>Candidates need to understand the difference between lossy and lossless compression, and the benefits and drawbacks of each type.<\/li>\n<li>Candidates need to be able to recommend a type of compression for a given scenario.<\/li>\n<li>Candidates need to understand how run-length encoding can reduce the size of a file for example with a text file or image.<\/li>\n<li>Candidates should understand how dictionary coding works by substituting entries with a unique code.<\/li>\n<li>Candidates should have practical experience of using these algorithms with small example files.<\/li>\n<li>Candidates should understand the need for encryption. Candidates should understand how symmetric and asymmetric encryption work to encrypt and decrypt data.<\/li>\n<li>Candidates should understand the need for and purpose of using hashing algorithms to store data.<\/li>\n<li>Candidates should be aware of different uses for hashing, such as the storing of passwords.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>This download provides you with a zip file which contains all the resources you will need to deliver this topic.<\/p>\n","protected":false},"featured_media":1490,"template":"","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_brand":[],"product_cat":[40,22],"product_tag":[],"class_list":{"0":"post-623","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ocr-a-level-h046-h446-unit-1-computing-principles-computer-systems","7":"product_cat-resources","9":"first","10":"instock","11":"downloadable","12":"taxable","13":"shipping-taxable","14":"product-type-simple"},"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/product\/623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/media\/1490"}],"wp:attachment":[{"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/media?parent=623"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/product_brand?post=623"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/product_cat?post=623"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/wp-json\/wp\/v2\/product_tag?post=623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}