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Trắc nghiệm truyền số liệu giúp bạn nắm rõ một số nội dung quan trọng của chương trình học, tài liệu bằng tiếng anh nên giúp bạn tạo một nền tản tiếng anh chuyên nghành khá tốt. với cacsp phần của tài liệu được lấy tự bộ sách chuẩn quốc tế giúp bạn làm quen với bộ giao thức và phương thức hoạt động của mạng LAN và Wan
Chapter 1: The correct answer for each question is indicated by a . 1 CORRECT The _______ is the physical path over which a message travels. 2 INCORRECT The information to be communicated in a data communications system is the _______. 3 CORRECT Frequency of failure and network recovery time after a failure are measures of the _______ of a network. 4 INCORRECT An unauthorized user is a network _______ issue. 1 5 INCORRECT Which topology requires a central controller or hub? 6 CORRECT Which topology requires a multipoint connection? 7 CORRECT Communication between a computer and a keyboard involves ______________ transmission. 2 8 INCORRECT A television broadcast is an example of _______ transmission. 9 INCORRECT A _______ connection provides a dedicated link between two devices. 1 0 INCORRECT In a _______ connection, more than two devices can share a single link. 3 1 1 CORRECT In _______ transmission, the channel capacity is shared by both communicating devices at all times. 1 2 INCORRECT In the original ARPANET, _______ were directly connected together. 1 3 CORRECT This was the first network. 1 CORRECT Which organization has authority over interstate and international commerce in the communications field? 4 4 1 5 INCORRECT _______ are special-interest groups that quickly test, evaluate, and standardize new technologies. 1 6 CORRECT Which agency developed standards for physical connection interfaces and electronic signaling specifications? 1 7 INCORRECT _______ is the protocol suite for the current Internet. 5 1 8 INCORRECT _______ refers to the structure or format of the data, meaning the order in which they are presented. 1 9 INCOR RECT ________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation. 20 CORRECT _______ refers to two characteristics: when data should be sent and how fast it can be sent. 6 2 1 CORRECT Data flow between two devices can occur in a _______ way. 22 INCORRECT In a ______ connection, two and only two devices are connected by a dedicated link. 2 3 INCORRECT In a ________ connection, three or more devices share a link. 7 2 4 INCORRECT ______ refers to the physical or logical arrangement of a network. 25 CORRECT Devices may be arranged in a _____ topology. 26 INCORRECT A _______ is a data communication system within a building, plant, or campus, or between nearby buildings. 27 INCORRECT A ______ is a data communication system spanning states, countries, or the whole world. 8 2 8 INCORRECT ________ is a collection of many separate networks. 29 CORRECT There are ______________ Internet service providers. 3 0 INCORRECT A ________ is a set of rules that governs data communication. 9 3 1 INCORRECT ________ is an idea or concept that is a precursor to an Internet standard. CHAPTER 2: The correct answer for each question is indicated by a . 1 INCORRECT The Internet model consists of _______ layers. 2 INCORRECT The process-to-process delivery of the entire message is the responsibility of the _______ layer. 10 [...]... layers of the OSI model 4 6 INCORRECT The address, also known as the link address, is the address of a node as defined by its LAN or WAN 4 7 INCORRECT 4 8 INCORRECT The address uniquely defines a host on the Internet The _ address identifies a process on a host 24 CHAPTER 3: The correct answer for each question is indicated by a 1 INCORRECT Before data can be transmitted, they must be transformed... the _ address must be consulted INCORRECT 22 IPv6 has _ -bit addresses CORRECT ICMPv6 includes _ 16 2 3 INCORRECT 2 4 INCORRECT The layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver 25 INCORRECT The _ layer is responsible for the delivery of a message from one process to another The layer is responsible for. .. to the next without errors The _ layer links the network support layers and the user support layers 21 3 9 INCORRECT 4 0 INCORRECT 4 1 INCORRECT The layer is responsible for the source-to-destination delivery of a packet across multiple network links The layer is responsible for the process-to-process delivery of the entire message The layer establishes, maintains, and synchronizes the. ..3 INCORRECT The _ layer is the layer closest to the transmission medium 4 CORRECT Mail services are available to network users through the _ layer 5 INCORRECT As the data packet moves from the upper to the lower layers, headers are _ 11 6 INCORRECT The _ layer lies between the network layer and the application layer 7 INCORRECT Layer 2 lies between the physical layer and the _ layer... wave is 2 V, the minimum amplitude is V INCORRECT A 2 ) B 1 ) C )2 D b ) et w e e n -2 a n d 2 1 1 INCORRECT A signal is measured at two different points The power is P1 at the first point and P2 at the second point The dB is 0 This means A P ) 2 is z e r 31 o B2 P ) e q u al s P1 C2 P ) is m uc h la rg er th a n P1 D2 P ) is m uc h s m all er th a n P1 1 2 INCORRECT is a type of transmission... shows how the network functions of a computer ought to be organized INCORRECT 13 1 3 CORRECT 1 4 INCORRECT 1 5 INCORRECT The physical layer is concerned with the movement of _ over the physical medium The OSI model consists of _ layers In the OSI model, as a data packet moves from the lower to the upper layers, headers are _ 14 1 6 INCORRECT 1 7 INCORRECT In the OSI model, when data is transmitted... communicating devices 22 4 2 CORRECT 4 3 INCORRECT 4 4 INCORRECT The _ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format The _ layer enables the users to access the network TCP/IP is a hierarchical protocol suite developed the OSI model 23 4 5 INCORRECT The TCP/IP _ layer is equivalent to the combined session, presentation,... one hop (node) to the next 17 26 CORRECT The Internetworking Protocol (IP) is a protocol 27 INCORRECT _ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer 2 8 INCORRECT provides full transport layer services to applications 18 29 INCORRECT 3 0 INCORRECT 3 1 INCORRECT 3 2 INCORRECT The address,... device B, the header from A's layer 5 is read by B's _ layer In the OSI model, what is the main function of the transport layer? B) D) 1 8 INCORRECT 1 INCORRECT In the OSI model, encryption and decryption are functions of the layer When a host on network A sends a message to a host on network B, which address does the router look at? 15 9 20 INCORRECT 2 1 To deliver a message to the correct application... address, also known as the link address, is the address of a node as defined by its LAN or WAN Ethernet uses a physical address that is imprinted on the network interface card (NIC) A port address in TCP/IP is bits long The created a model called the Open Systems Interconnection, which allows diverse systems to communicate 19 3 3 INCORRECT 3 4 INCORRECT 3 5 INCORRECT The seven-layer _ model . Chapter 1: The correct answer for each question is indicated by a . 1 CORRECT The _______ is the physical path over which a message travels. 2 INCORRECT The information to be communicated. ________ is an idea or concept that is a precursor to an Internet standard. CHAPTER 2: The correct answer for each question is indicated by a . 1 INCORRECT The Internet model consists of _______ layers. 2 INCORRECT. _______. 11 6 INCORRECT The _______ layer lies between the network layer and the application layer. 7 INCORRECT Layer 2 lies between the physical layer and the _______ layer. 8 INCORRECT When data are transmitted