3-6: Broadband Access Flashcards
Which two network components does a teleworker require to connect remotely and securely from home to the corporate network?
- VPN client software or VPN-enabled router
- Broadband Internet connection
Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?
S-CDMA
What are two characteristics of a PPPoE configuration on a Cisco customer router?
- The PPP configuration is on the dialer interface
- The Ethernet interface does not have an IP address.
How is voice traffic affected when the customer uses ADSL technology?
ADSL signals can distortvoice transmissions.
What functionality is required on routers tprovide remote workers with VoIP and videoconferencing capabilities?
QoS
Which broadband wireless technology is based on the 802.11 standard?
municipal Wi-Fi
What advantage does DSL have compared to cable technology?
DSL is not a shared medium.
Which type of long distance telecommunication technology provides point-to-point connections and cellular access?
WiMax
What is defined by the IEEE 802.16 standard?
WiMAX
DOCSIS specifies the ___ sub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.
MAC
_____ creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.
PPPoE
Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection?
- Channel bandwidth
- Modulation technique
Which medium is used for delivering data via DSL technology through PSTN?
copper
Which technology provides a secure connection between a SOHO and the headquarters office?
VPN
What is the ideal solution when no other wireless access is available?
Satellite
Which networking technology will ensure reliable and secure remote access when a teleworker connects to a corporate network?
An encrypted VPN tunnel
What are two disadvantages of employing teleworkers in an organization?
- Increased difficulty of tracking task progress
- The need to implement a new management style
What are two characteristics of a PPPoE configuration on a Cisccustomer router?
- The PPP configuration is on the dialer interface
- The Ethernet interface does not have an IP address.
Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?
satellite
In which layer of the TCP/IP protocol model does IPsec apply security to network data?
Internet
What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices?
- Frame Relay
- Leased lines
Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes t1492?
To accommodate the PPPoE headers
Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?
ADSL
What includes 2G, 3G, and 4G?
Cellular/Mobile
