style="font-size:15px;"> 44 Which of the following network topologies are used by Wireless Local Area Networks (WLANs)? (Choose all that apply.)Ad hocBusInfrastructureStar45 Which of the following cabling topologies was used by the first Ethernet networks?BusRingStarMesh
46 On an Ethernet network using the star topology, which of the following devices can function as the cabling nexus that forms the figurative center of the star? (Choose all that apply.)HubRouterSwitchAccess Point
47 Which of the following cabling topologies provides the greatest number of redundant paths through the network?StarRingMeshBus
48 Which of the following Ethernet physical layer options does not use the star topology?10Base210Base-T100Base-TX1000Base-T
49 Which of the following network types are typically wireless? (Choose all that apply.)WANPANSANWLAN
50 Dense Wave Division Multiplexing (DWDM) is a signaling technology that has become a popular choice in the construction of which of the following types of provider links?Digital Subscriber Line (DSL)Metro-opticalSatelliteCable
51 Which of the following statements is true about the differences between a peer-to-peer network and a client-server network?Peer-to-peer networks are inherently less secure than client-server networks.Peer-to-peer networks are illegal, while client-server networks are legal.On peer-to-peer networks, every workstation is capable of authenticating users.On a peer-to-peer network, all workstations must share their resources.
52 Why does DSL (Digital Subscriber Line) technology support faster data transmissions than a standard Public Switched Telephone Network (PSTN) modem connection?DSL uses a separate control circuit that provides clear channels for data.DSL does not perform Cyclic Redundancy Check (CRC) functions and therefore has less overhead.DSL performs only a single analog-to-digital conversion.DSL uses a higher frequency range.
53 Which DSL (Digital Subscriber Line) technology can adjust its transmission speed based on line conditions?HDSLIDSLRADSLVDSL
54 Which of the following Wide Area Network (WAN) technologies uses broadband signaling?Digital Subscriber Line (DSL)Synchronous Optical Network (SONET)Integrated Services Digital Network (ISDN)Cable television (CATV)
55 Ed has been hired by a private company to connect two remote sites with a Wide Area Network (WAN). Each of these sites has more than 200 users, and they all need to constantly transfer files across the WAN. One of the sites has a customer database that is accessed by both sites at all hours of the day. Access to the database and other information is time sensitive and constant. The company estimates that their aggregate bandwidth needs to be approximately 40 Mbps. Management says that they need to guarantee access to this information and that money is not a factor in the WAN implementation. Which WAN technology should Ed recommend for this scenario?A standard modem-to-modem connectionA T-3 dedicated leased lineA cable television (CATV) connectionAn ADSL (Asymmetrical Digital Subscriber Line) connection
56 Ralph is an employee of a company that offers the option to telecommute from home. As a telecommuting employee, he needs to connect to the company network to access client information, transfer files, and send email through a Virtual Private Network (VPN) connection. Ralph is investigating the different Wide Area Network (WAN) services available for the remote connection before he implements one. His home is over 30 years old; the existing telephone wiring was not run through conduit, and the wiring seems to be deteriorating. Ralph has cable television (CATV) service, and his home is also approximately 20,000 feet from the nearest telephone central office. He wants to implement the fastest remote connection service possible, but cost is a factor in the decision. Which WAN technology should Ralph implement?A dedicated leased line (fractional T-1)A standard modem-to-modem connectionA DSL (Digital Subscriber Line) connectionA broadband CATV connection
57 Which of the following Wide Area Network (WAN) connection technologies uses analog signaling?Public Switched Telephone Network (PSTN)Cable television (CATV)Digital Subscriber Line (DSL)Synchronous Optical Network (SONET)
58 If you want to allow both voice and data traffic to be transmitted across the same Digital Subscriber Line (DSL) connection, what type of device is required at the customer site?A signal terminatorA Digital Subscriber Line Access Multiplexer (DSLAM)A coder/decoder (CODEC) deviceA splitter
59 What are the two main factors that affect DSL (Digital Subscriber Line) transmission rates?Signal terminationDistance to the nearest central officeLine conditionsLine reflection
60 Which of the following best describes the function of a demarcation point or demarc?The vertical cross-connect that links horizontal networks togetherThe place where an outside service enters the buildingA switch or hub that connects the computers in a particular work area together, forming a horizontal networkThe place in a telecommunications room where a patch panel is located
61 Which of the following broadband WAN services provides equal amounts of upstream and downstream bandwidth?ADSLSDSLSatelliteCable
62 Which of the following hardware components is typically found at the demarcation point of a leased line, such as a T-1 or T-3?TerminatorPunchdown block110 blockSmartjackCSU/DSU
63 Which of the following remote access connection technologies can support the simultaneous transmission of voice and data traffic over the Public Switched Telephone Network (PSTN)? (Choose all that apply.)Dial-up modem connectionIntegrated Services Digital Network (ISDN)Digital Subscriber Line (DSL)Synchronous Optical Network (SONET)Cable television (CATV) network
64 A company is moving their entire operation to a new building, and part of the plan is to increase the speed of their Internet access by installing a leased T-3 line to replace their existing broadband connection. The service provider they have selected sends a technician to install the leased line. Which of the following is the correct term for the location in the new building where the technician will terminate the T-3?Patch panelSwitchFirewallDemarc
65 A T-3 leased line connection runs at 44.736 megabits per second (Mbps). How many separate channels does a T-3 provide?2464128512672
66 A T-3 leased line connection is the equivalent of how many T-1 connections?71428112
67 Which of the following is the U.S. standard for synchronous data transmissions that defines data rates designated by optical carrier levels, such as OC-3, OC-12, OC-48, and OC-192?SDHSONETISDNDSL
68 Which of the following is a wide area networking mechanism that assigns labels to packets and forwards them based on those labels, rather than addresses?Frame relayMPLSATMPPPoESDWAN
69 Which two of the following constructs provide roughly the same function? (Choose two that apply.)SIP trunkCSU/DSUVoIP gatewaySmartjackVPN concentrator
70 Which of the following is the European equivalent of the Synchronous Optical Networking (SONET) standard in the United States?SDHOC-3E-3ATM
71 Which of the following is the device that provides the interface between a Local Area Network (LAN) and a Wide Area Network (WAN)?QSFPCSU/DSUSIP trunkIDS/IPS
72 Which of the following terms describes a leased line subscription that provides access to only part of a T-1?E-1B channelOC-1Fractional T-1
73 Multiprotocol Label Switching (MPLS) is sometimes said to operate between two layers of the Open Systems Interconnection (OSI) model. Between which two layers is it usually said to function?Physical and data linkData link and networkNetwork and transportTransport and Session
74 Which of the following Wide Area Network (WAN) services provides the fastest transfer rate?T-1E-1T-3OC-1
75 To
