WAN chapter 6(answered)quizzes

Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology? TDMA CDMA S-CDMA FDMA S-CDMA Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.) VPN tunneling requirements channel bandwidth the separation of the voice and data transmissions modulation technique a deterministic media access method channel bandwidth modulation technique 00:30 01:13 When PPPoE is configured on a customer router, which two commands must have the same value for the configuration to work? (Choose two.) ppp chap password 2 pppoe-client dial-pool-number 2 ppp chap hostname 2 interface dialer 2 interface gigabitethernet 0/2 dialer pool 2 pppoe-client dial-pool-number 2 dialer pool 2 Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes to 1492? to accommodate the PPPoE headers to enable CHAP authentication to establish a secure tunnel with less overhead to reduce congestion on the DSL link to accommodate the PPPoE headers A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate? WiMax DSL cable satellite cable What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities? IPsec QoS VPN PPPoE QoS What advantage does DSL have compared to cable technology? DSL has no distance limitations. DSL is faster. DSL upload and download speeds are always the same. DSL is not a shared medium. DSL is not a shared medium. What two layers of the OSI model are defined by DOCSIS? (Choose two.) Layer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 1 Layer 2 What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.) leased lines Frame Relay LTE IPsec QoS leased lines Frame Relay How is voice traffic affected when the customer uses ADSL technology? Voice signals are on a separate wire pair from ADSL signals. No special equipment is needed to separate voice and data signals. Voice traffic is interrupted if the ADSL service fails. ADSL signals can distort voice transmissions. ADSL signals can distort voice transmissions. Which type of long distance telecommunication technology provides point-to-point connections and cellular access? WiMax mobile broadband satellite municipal Wi-Fi WiMax Which standard specifies the channel frequencies and the deterministic access method of cable networks? LTE WiMAX 802.16 DOCSIS DOCSIS Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.) VPN server or concentrator multifunction security appliance broadband Internet connection authentication server VPN client software or VPN-enabled router broadband Internet connection VPN client software or VPN-enabled router What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.) The Ethernet interface does not have an IP address. The PPP configuration is on the dialer interface. An MTU size of 1492 bytes is configured on the Ethernet interface. The dialer pool command is applied to the Ethernet interface to link it to the dialer interface. The customer router CHAP username and password are independent of what is configured on the ISP router. The Ethernet interface does not have an IP address. The PPP configuration is on the dialer interface. What are two features of wavelengths in the electromagnetic spectrum? (Choose two.) They are calculated by the number of waves per second. They are the distance from the peak of one radio wave to the trough of the next radio wave. They are the rate at which current or voltage cycles occur. They are the distance from the peak of one radio wave to the peak of the next radio wave. They are calculated by the speed of propagation of the electromagnetic signal divided by its frequency in cycles per second. They are the distance from the peak of one radio wave to the peak of the next radio wave. They are calculated by the speed of propagation of the electromagnetic signal divided by its frequency in cycles per second. Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth? CDMA TDMA ADSL SDSL ADSL What technology provides service providers the capability to use authentication, accounting, and link management features to customers over Ethernet networks? PPPoE ISDN QoS DSL PPPoE Which broadband wireless technology is based on the 802.11 standard? UMTS WiMAX CDMA Municipal Wi-Fi municipal Wi-Fi What are two disadvantages of employing teleworkers in an organization? (Choose two.)​ increase in office expenses the need to implement a new management style increased difficulty of tracking task progress increased usage of sick or vacation days slower customer service response times the need to implement a new management style increased difficulty of tracking task progress What mobile broadband communication Layer 2 technology uses a special coding scheme to assign each transmitter a specific code? TDMA CDMA UMTS FDMA CDMA Which medium is used for delivering data via DSL technology through PSTN? copper fiber radio frequency wireless copper Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea? WiMax mobile broadband satellite Wi-Fi Mesh satellite Which technology provides a secure connection between a SOHO and the headquarters office? VPN PPPoE WiMax QoS VPN At which two layers of the OSI model does DOCSIS specify requirements? (Choose two.) Layer 1 Layer 2 Layer 3 Layer 4 Layer 7 Layer 1 Layer 2 Match the broadband characteristic to the broadband type. (Not all options are used.) 1 bandwidth is shared by many users 2 bandwidth is distance sensitive 3 area of coverage is limited to 1-2 km 4 ultimate high bandwidth solution WiMax, DSL, fiber-to-the-home, cable 1 cable 2 DSL 3 WiMax 4 fiber-to-the-home Fill in the blank. Cable systems use coaxial cables that carry ____ signals across the network. RF Which communication protocol allows the creation of a tunnel through the DSL connection between the customer router and the ISP router to send PPP frames? PPPoE CHAP POTS ADSL PPPoe What are three characteristics that help build a successful environment for a teleworker? (Choose three.) -reduced commuting costs -an increase in productivity -a distraction free workplace -less road traffic congestion -a broadband Internet connection -a flexible approach to required work a broadband Internet connection a flexible approach to required work a distraction free workplace What is a component of an ADSL connection that is located at the customer site? CO CPE SOHO DSLAM CPE What is the appropriate usage of a Very Small Aperture Terminal (VSAT)? -to provide coverage to customers with cable technology -to provide coverage to an area of 3,000 square miles -to create a private WAN -to receive coverage from mobile phone towers to create a private WAN Which broadband solution would best meet the requirements of a customer who has an existing telephone landline, requires moderate downstream bandwidth, but does not want to share bandwidth with other users? WiMax cellular cable DSL DSL In order for the IT staff of a company to understand the basic operation of VPNs, which two features or technologies must the network designer identify as training needs? (Choose two.) -IPv6 tunneling -QoS operation -tunneling protocols -VLAN configuration -encryption algorithms tunneling protocols