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  • CCIE R&S

    CCIE R&S Core Knowledge Question(4)

    Thursday, April 9th, 2009

    1. Which LSA type is originated by the designated router only? Highlight for answer: Type-2 (Network) LSA

    CCNA Quick Notes – Routing

    Friday, April 3rd, 2009

    1.How do OSPF-enabled routers build adjacencies and exchange their routing tables? OSPF-enabled routers build adjacencies by sending Hello packets out through all OSPF-enabled interfaces. If these routers share a command link and agree on parameters set within their Hello packets then they become neighbors. If these parameters differ then the routers do not become neighbors […]

    CCNA Quick Notes – Internetworking

    Friday, April 3rd, 2009

    1.What are the three layers of the Cisco Hierarchical Model? The three layers of the Cisco Hierarchical Model are:1 The access layer The distribution layer The core layer 2.In the Cisco Hierarchical Model, what is the function of the access layer? Sometimes referred to as the desktop layer, the access layer is the point at […]

    CCNA Quick Notes – WAN

    Friday, April 3rd, 2009

    1.The three WAN connection types available are leased lines, circuit-switched, and packet-switched. Define the differences between each connection type. Leased lines are dedicated point-to-point lines that provide a single preestablished WAN communication path from the customer’s network to the remote network. Leased lines are usually employed over synchronous connections. They are generally expensive and are […]

    CCNA Quick Notes – LAN

    Friday, April 3rd, 2009

    1. What is carrier sense multiple access collision detect (CSMA/CD)? CSMA/CD describes the Ethernet access method. In CSMA/CD, many stations can transmit on the same cable, and no station has priority over any other. Before a station transmits, it listens on the wire to make sure no other station is transmitting. If no other station […]

    CCIE R&S Core Knowledge Question(3)

    Friday, April 3rd, 2009

    1. What is the primary difference between SNMP traps and SNMP inform requests (informs)? Highlight for answer: SNMP informs are traps that include a request for confirmation of receipt from the SNMP manager. 2. What is the multicast address that an OSPF device uses to communicate with the designated router? Highlight for answer: 224.0.0.6 TIP: […]

    CCIE R&S Core Knowledge Question(2)

    Friday, April 3rd, 2009

    1. Which point-to-multipoint technology utilizes an IPv4 address embedded in an IPv6 address (the IPv4 address is converted to hexadecimal and then concatenated to the prefix 2002::/16) to allow isolated IPv6 domains to be connected over an IPv4 network to remote IPv6 networks? Highlight for answer: Automatic 6to4 Tunnels 2. Which OSPF feature allows a […]

    CCIE R&S Core Knowledge Question(1)

    Friday, April 3rd, 2009

    1. Which LSA type is flooded throughout the autonomous system by an Area Border Router and contains an AS Boundary Router address? Highlight for answer: Type-4 LSA (ASBR Summary) 2. R1#ping FE80::2 Output Interface: Serial1/0 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to FE80::2, timeout is 2 seconds: Packet sent with a […]

    CCIE R&S Lab Exam (Open-Ended-Question)

    Friday, April 3rd, 2009

    First,let’s look at two Cisco official declarations about the open-ended question of CCIE R&S Lab Exam. Jan 14, 2009 Changes to CCIE Lab and Written Exam Question Format and Scoring Effective February 1, 2009, Cisco will introduce a new type of question format to CCIE Routing and Switching lab exams. In addition to the live […]