style="font-size:15px;"> 10 At which layer of the Open Systems Interconnection (OSI) model are there TCP/IP protocols than can provide either connectionless or connection-oriented services to applications?PhysicalData linkNetworkTransportSessionPresentationApplication11 Which of the following layers of the Open Systems Interconnection (OSI) model typically have dedicated physical hardware devices associated with them? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
12 At which layer of the Open Systems Interconnection (OSI) model is there a protocol that adds both a header and footer to the information that is passed down from an upper layer, thus creating a frame?PhysicalData linkNetworkTransportSessionPresentationApplication
13 Identify the layer of the Open Systems Interconnection (OSI) model that controls the addressing, transmission, and reception of Ethernet frames, and also identify the media access control method that Ethernet uses.Physical layer; Carrier Sense Multiple Access with Collision Detection (CSMA/CD)Physical layer; Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)Data link layer; CSMA/CDData link layer; CSMA/CA
14 At which layer of the OSI model do you find the protocol responsible for the delivery of data to its ultimate destination on an internetwork?Data linkNetworkSessionApplication
15 Which of the following is not a protocol operating at the network layer of the OSI model?IPICMPIGMPIMAP
16 Ed is a software developer who has been given the task of creating an application that requires guaranteed delivery of information between end systems. At which layer of the Open Systems Interconnection (OSI) model does the protocol that provides the guaranteed delivery run, and what type of protocol must Ed use?Data link layer; connectionlessNetwork layer; connection-orientedTransport layer; connection-orientedApplication layer; connectionless
17 Which of the following devices operates only at the physical layer of the Open Systems Interconnection (OSI) model?HubBridgeSwitchRouter
18 Alice is a network administrator designing a new Local Area Network (LAN). She needs to determine the type of cabling and the network topology to implement. Which layers of the Open Systems Interconnection (OSI) model apply to cabling and topology elements?Physical and data link layersData link and network layersNetwork and transport layersTransport and application layers
19 Which layers of the Open Systems Interconnection (OSI) model do not have protocols in the TCP/IP suite exclusively dedicated to them? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
20 The protocols at which layer of the Open Systems Interconnection (OSI) model use port numbers to identify the applications that are the source and the destination of the data in the packets?ApplicationPresentationTransportNetwork
21 Which of the following is a correct listing of the Open Systems Interconnection (OSI) model layers, in order, from top to bottom?Physical, data link, transport, network, session presentation, applicationApplication, session, presentation, transport, network, data link, physicalPresentation, application, transport, session, network, physical, data linkSession, application, presentation, transport, data link, network, physicalApplication, presentation, session, transport, network, data link, physical
22 At which of the Open Systems Interconnection (OSI) model layers do switches and bridges perform their basic functions?PhysicalData linkNetworkTransport
23 On a TCP/IP network, flow control is a function implemented in protocols operating at which layer of the Open Systems Interconnection (OSI) model?PresentationSessionTransportNetwork
24 Which layer of the Open Systems Interconnection (OSI) model defines the medium, network interfaces, connecting hardware, and signaling methods used on a network?PhysicalData linkNetworkTransportSessionPresentationApplication
25 Which of the OSI model layers is responsible for syntax translation and compression or encryption?Data linkNetworkSessionPresentationApplication
26 Which layer of the Open Systems Interconnection (OSI) model is responsible for transmitting signals over the network medium?PhysicalData linkNetworkTransportSessionPresentationApplication
27 Specify the layer of the Open Systems Interconnection (OSI) model at which the Internet Protocol (IP) operates and whether it is connection-oriented or connectionless.Network; connection-orientedNetwork; connectionlessTransport; connection-orientedTransport; connectionless
28 An Ethernet network interface adapter provides functions that span which two layers of the Open Systems Interconnection (OSI) model?Physical and data linkData link and networkNetwork and transportTransport and application
29 Which of the following protocols operate at the application layer of the Open Systems Interconnection (OSI) model? (Choose all that apply.)HTTPSNMPICMPIGMPUDP
30 Which layer of the Open Systems Interconnection (OSI) model would be responsible for converting a text file encoded using EBCDIC on the sending system into ASCII code, when required by the receiving system?ApplicationPresentationSessionPhysical
31 Which of the following protocols operates at the network layer of the OSI model, but does not encapsulate data generated by an upper layer protocol for transmission over the network?IPUDPARPICMPTCP
32 A client on a TCP/IP network is attempting to establish a session with a server. Which of the following correctly lists the order of the TCP flags raised in the Transmission Control Protocol (TCP) session establishment messages?SYN, ACK, SYN, ACKSYN, SYN, ACK, ACKSYN/ACK, SYN/ACKSYN, SYN/ACK, ACK
33 Which of the following is the Maximum Transmission Unit (MTU) size for an Ethernet frame?512102415001518
34 Which of the following Transmission Control Protocol (TCP) control bits is set to 1 to initiate the termination of a session?SYNURGFINENDPSH
35 An electrician installing a new light fixture accidentally severs one of the LAN cables running through the dropped ceiling space. With which topology would the severed cable cause the greatest amount of disturbance to the network?BusStarLogical ringMesh
36 Which of the following statements about a wired Local Area Network (LAN) is true?Wired LANs support only the star topology.Wired LANs support only the star and bus topologies.Wired LANs support only the star and ring topologies.Wired LANs can support ring, bus, or star topologies.
37 Which of the following is an example of a hybrid topology?A workstation with two network interface cards, one of which is connected to a star network and one to a bus networkFour Ethernet switches connected using a bus topologyFour workstations, each with a separate network connection to each of the other threeFour Ethernet switches, each with a separate network connection to each of the other three
38 Which type of network is typically confined to a small area, such as a single room, floor, or building?WANLANMANCAN
39 Which type of network connects Local Area Networks (LANs) in distant locations?WANLANMANCAN
40 Which of the following topologies requires the installation of terminating resistors at two locations?BusStarRingMesh
41 Which of the following topologies is used by the majority of new Ethernet networks installed today?BusVirtual ringMeshHierarchical star
42 Alice has constructed a five-node failover cluster in which all five servers are connected to a hard disk array using a dedicated Fibre Channel network. Which of the following terms describes this network arrangement?SANPANWANMAN
43 Which of the following is not a technology typically used for
