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  • 12 Ways To Get The Most Out Of Lab Time

    By admin | April 30, 2009

    Often times you may have rack time only to find that much of it is wasted away. At the end of the session you sit asking yourself where all your time went. Here are  12 Ways to Get the Most out of Lab Time:

    1. Download the pre-configuration files from whatever vendor you are using ahead of time.  There is no reason why you shouldn’t have them prior to starting you lab.
    2. Choose the scenario you want to work on prior to the start of your lab time.
    3. Once you have the scenario selected look at the default (pre-) configurations for that lab.  Add things to them like the “no shut” command on interfaces you need to use or the “enable” and “config t” commands at the beginning of the configuration file.  This makes it faster when you past the configurations into an empty router. Read the rest of this entry »

    Topics: CCIE Track | No Comments »

    CCNA(640-802) Hotspot: Topology Based Questions(2)

    By admin | April 30, 2009

    Read the rest of this entry »

    Topics: 640-802 Exam, CCNA, CCNA R&S | 1 Comment »

    CCNA(640-802) Hotspot: Topology Based Questions

    By admin | April 30, 2009

    Read the rest of this entry »

    Topics: 640-802 Exam, CCNA, CCNA R&S | 1 Comment »

    CCNA 640-802-Update(Apr-2009) New Questions

    By admin | April 30, 2009

    1. What are three characteristics of the OSPF routing protocol? (Choose three.)

    A. It converges quickly.

    B. OSPF is a classful routing protocol.

    C. It uses cost to determine the best route.

    D. It uses the DUAL algorithm to determine the best route.

    E. OSPF routers send the complete routing table to all directly attached routers.

    F. OSPF routers discover neighbors before exchanging routing information.

    Answer: ACF

    Read the rest of this entry »

    Topics: 640-802 Exam, CCNA, CCNA R&S | No Comments »

    CCIE R&S Core Knowledge Question(6)

    By admin | April 28, 2009

    1. What is the default OSPF network for the following media types: Ethernet, Token Ring, and FDDI?

    Highlight for answer: Broadcast

    2. What OSPF router type connects one or more areas to the backbone and acts as a gateway for interarea traffic?

    Highlight for Answer: Area Border Router (ABR)

    3. To be in compliance with the BGP synchronization rule, there must be a match for the prefix in the IP routing table in order for an internal BGP (iBGP) path to be considered a valid path. What additional criteria must an OSPF route meet? Read the rest of this entry »

    Topics: CCIE R&S, Open-Ended-Question | 1 Comment »

    Subneting and Summarization

    By admin | April 28, 2009

    Subneting

    The process of extending the default subnet mask creates a counting range in the octet that the subnet was extended into, which can be used to represent subnetworks. This allows a single Class A, B, or C network to be subdivided into many smaller groups with each group, or subdivision treated as if it were a network itself. Thus, when we extend the default Class B subnet mask to 255.255.240.0, we do so by extending the subnet mask by 4 bits into the third octet. The number of bits that the subnet mask is extended by represents a counting range for counting the number of subnetworks that new subnet mask can support, using the 2n-2 formula. Thus, the subnet mask 255.255.240.0 subnet mask can support 14 subnets (24-2). In other words, the 65,534 hosts supported by the default subnet mask can now be divided among 14 subnetworks. The number of IP addresses supported by each subnet is called an address range. To calculate the range of addresses for each subnet, we would take the Read the rest of this entry »

    Topics: CCENT, CCENT Articles, CCNA, CCNA Articles, CCNA R&S | No Comments »

    IP Address Classes and CIDR

    By admin | April 28, 2009

    IP addresses are divided in to ‘classes’, based on the decimal value represented in the first octet. This class definition is referred to as the First Octet Rule. There are five classes of IP addresses: classes A, class B, class C, class D; and class E, but only class A, B and C addresses are used to identify devices connected to the Internet. Class D addresses are used for multicasting, and Class E addresses are reserved for experimental use. The subnet mask is related to the IP address class. Thus, once the IP address class is known, the default routing mask is also known.

    The IP address classes and their related subnet masks are:

    . Class A addresses range from 0.0.0.0 through 126.255.255.255 and use a default subnet mask of 255.0.0.0. In Class A addresses, the first octet is used as for the network ID while the last three octets are used for the host ID. In other words, the first 8 bits of the subnet mask are all 1s, hence

    Read the rest of this entry »

    Topics: CCNA, CCNA Articles, CCNA R&S | 1 Comment »

    IP Addressing

    By admin | April 28, 2009

    An IP address is a network layer (Layer 3) address that uniquely identifies a host, including network components and devices, on a TCP/IP network. An IP address is composed of 32 binary bits and consists of two parts: a network ID and a host ID.

    . The Network ID identifies the TCP/IP hosts that are located on the same physical network. All hosts on the same physical network must be assigned the same network ID to communicate with each other. If routers connect your networks, a unique network ID is required for each wide area connection.

    . The Host ID identifies the individual hosts within a network. The host ID must be unique to the network designated by the network ID. Read the rest of this entry »

    Topics: CCNA, CCNA Articles, CCNA R&S | No Comments »

    CCNA(640-802) Lab – EIGRP Troubleshooting

    By admin | April 27, 2009

    After adding P4S2 router, no routing updates are being exchanged between P4S1 and the new location. All other inter connectivity and Internet access for the existing locations of the company are working properly.

    The task is to identify the fault(s) and correct the router configuration to provide full connectivity between the routers.

    Access to the router CLI can be gained by clicking on the appropriate host.

    All passwords on all routers are cisco.

    IP addresses are listed in the chart below. Read the rest of this entry »

    Topics: 640-802 Exam, CCNA, CCNA R&S | 1 Comment »