{"id":210139,"date":"2025-04-29T18:38:04","date_gmt":"2025-04-29T18:38:04","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=210139"},"modified":"2025-04-29T18:38:07","modified_gmt":"2025-04-29T18:38:07","slug":"which-of-the-following-best-describes-logical-link-control-llc","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/04\/29\/which-of-the-following-best-describes-logical-link-control-llc\/","title":{"rendered":"Which of the following best describes Logical Link Control (LLC)"},"content":{"rendered":"\n

Which of the following best describes Logical Link Control (LLC)?<\/p>\n\n\n\n

A. It is a Layer 1 protocol.<\/p>\n\n\n\n

B. It is a sublayer of the Data Link layer.<\/p>\n\n\n\n

C. It remembers the NIC\u2019s MAC address.<\/p>\n\n\n\n

D. It controls open network sessions.<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is B. It is a sublayer of the Data Link layer<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

The Logical Link Control (LLC)<\/strong> is one of the two sublayers of the Data Link layer<\/strong> in the OSI (Open Systems Interconnection) model. The Data Link layer is responsible for reliable data transfer across a physical network link, and it consists of two sublayers: the Media Access Control (MAC)<\/strong> sublayer and the Logical Link Control (LLC)<\/strong> sublayer.<\/p>\n\n\n\n

    \n
  1. LLC and the Data Link Layer<\/strong>:
    The LLC sublayer plays a crucial role in providing the interface between the Data Link layer and the Network layer (Layer 3). Its primary function is to manage the communication between devices and offer error-checking and flow control for the data that is transferred over the network. The LLC sublayer is responsible for ensuring that data is received correctly by using mechanisms like acknowledgment signals and retries if necessary. It also defines the protocol used for communication, making it independent of the underlying physical hardware and MAC addressing. The LLC allows multiple Layer 3 protocols (such as IP or IPX) to coexist over the same physical network link by using the same LLC frame format.<\/li>\n\n\n\n
  2. What LLC Does<\/strong>:<\/li>\n<\/ol>\n\n\n\n
      \n
    • Error Control<\/strong>: It can perform error detection to ensure that data is transmitted without errors.<\/li>\n\n\n\n
    • Flow Control<\/strong>: It regulates the flow of data between devices to prevent congestion and data loss.<\/li>\n\n\n\n
    • Multiplexing<\/strong>: It allows different network protocols to be transmitted over the same physical medium by providing logical addressing and identification for each protocol.<\/li>\n<\/ul>\n\n\n\n
        \n
      1. Why Other Answers Are Incorrect<\/strong>:<\/li>\n<\/ol>\n\n\n\n
          \n
        • A. Layer 1 protocol<\/strong>: Layer 1 refers to the physical layer of the OSI model, which deals with hardware transmission. LLC is not a Layer 1 protocol but operates at Layer 2.<\/li>\n\n\n\n
        • C. NIC\u2019s MAC address<\/strong>: The MAC address is managed by the MAC sublayer of the Data Link layer, not the LLC.<\/li>\n\n\n\n
        • D. Controls open network sessions<\/strong>: LLC does not manage open network sessions; it primarily focuses on data link control, ensuring reliable transmission over the physical link.<\/li>\n<\/ul>\n\n\n\n

          In summary, LLC is a sublayer of the Data Link layer responsible for managing communication, error checking, and ensuring data is transferred reliably between devices over a network.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Which of the following best describes Logical Link Control (LLC)? A. It is a Layer 1 protocol. B. It is a sublayer of the Data Link layer. C. It remembers the NIC\u2019s MAC address. D. It controls open network sessions. The correct answer and explanation is : The correct answer is B. It is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-210139","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=210139"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210139\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=210139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=210139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=210139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}