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  • CCNA

    CCNA 640-802 Bible – Identify Network Problems

    Monday, July 6th, 2009

    1. While troubleshooting a network connectivity problem, a technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However, when the ping command is issued from the workstation, the output message "Request timed out." is displayed. At which layer of the OSI model does the […]

    CCNA 640-802 Bible – Determine Path Between Two Hosts Across Network

    Monday, July 6th, 2009

    1.Refer to the exhibit. What is the correct addressing for a frame and packet received by Host B from Host A?

    CCNA 640-802 Bible – OSI and TCP Basic Operation

    Friday, July 3rd, 2009

    1. Why does the data communication industry use the layered OSI reference model? (Choose two.) A:It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting. B:It enables equipment from different vendors to use the same electronic components, thus saving research and development funds. C:It supports the evolution […]

    CCNA 640-802 Bible – OSI and TCP/IP models

    Friday, July 3rd, 2009

    1. At which layers of the OSI model do WANs operate? (Choose two.) A:application layer B:session layer C:transport layer D:network layer E:datalink layer F:physical layer Correct Answers: E, F Explanation:

    CCNA 640-802 Bible – Network Device

    Friday, July 3rd, 2009

    1. Which of the following is true regarding the use of switches and hubs for network connectivity? A: Switches take less time to process frames than hubs take. B: Switches do not forward broadcasts. C: Hubs can filter frames. D: Using hubs can increase the amount of bandwidth available to hosts. E: Switches increase the […]

    Lammle Press CCNA 14 Module DVD – BitTorrent

    Saturday, June 13th, 2009

    Get the foundation you need to prepare for the Todd Lammle Cisco® authorized CCNA Boot Camps. Order Self-Paced Training on DVD from Lammle Press! Todd Lammle, CCNA/CCNP/CCSP/CCVP, CEH/CEFI, FCC RF Licensed, popular Sybex author and trainer at GlobalNet Training has been involved in computers and networking with Fortune 500 companies for over two decades. He […]

    The summarization of EIGRP – BSCI

    Friday, June 12th, 2009

    The characteristics of EIGRP follow: § Hybrid routing protocol (distance vector that has link-state protocol characteristics). § Use DUAL, first proposed by E. W. Dijkstra and C. S. Scholten, to perform distributed shortest-path routing while maintaining freedom from loops at every instant. Although many researchers have contributed to the development of DUAL, the most prominent […]

    IPv6 EUI-64 interface addressing

    Sunday, June 7th, 2009

    One of IPv6’s key benefits over IPv4 is its capability for automatic interface addressing. By implementing the IEEE’s 64-bit Extended Unique Identifier (EUI-64) format, a host can automatically assign itself a unique 64-bit IPv6 interface identifier without the need for manual configuration or DHCP. This is accomplished on Ethernet interfaces by referencing the already unique […]

    5 Minutes Course – Frame Relay

    Friday, June 5th, 2009

    Frame Relay is packet switched WAN techonlogy for transporting Data across Conection oriented Virtual Circuits using Public Data Networks (PDN). its high performance alternative to overly reliable / slow X.25 Wan Protocol. it have no Error Recovery but have smart flow control (fecn becn). it can support up to T3 line (44.736 Mbps) in 1984 […]