CCDA certification is a foundation exam for testing Cisco network design fundamentals for the small office/home office (SOHO) market. CCDA certified professionals could design routed and switched networks involving LAN, WAN, and dial up access for small businesses.The exam is of 2 hours duration and there will be approximately 65 questions. Many questions are scenario based. Click here to visit official Cisco website to know more about this certification. CCDA is a pre-requisite for CCDP (Cisco Certified Design Professional) certification offered by Cisco Systems.
40. Cisco uses TFTP protocol to distribute IOS over a WAN link.
41. It is important to know the difference between a collision domain and a broadcast domain. When you use Hubs, all the nodes connected to the hub will be in the same collision domain. However, when you use switches and implement VLANs, each VLAN will be in a separate broadcast domain. The packet forwarding between VLANs is achieved through the use of routing.
42. IP routing protocols can load balance across up to six equal cost parallel links. The "maximum-paths" command can be used to change the number of links that the router will have to load-balance over IP.
42. Practice your demonstration before final demonstration to the customer.
43. Access Lists:
An example to remove an access list from an interface:
44. Spanning Tree Protocol (STP) 802.1d is used to prevent routing loops. In Cisco Catalyst 5000 series switches, use BDPUs (Bridge Protocol Data Units) to determine the spanning tree topology. STP uses a Tree Algorithm (STA) to prevent loops, resulting in a stable network topology.
45. IPX address consists of 32-bit network address and 48-bit host address. The network portion of the address is configured by the administrator. The host part of the address is the 48-bit MAC address on the network interface card of the node.
46. ISL, 802.1Q are the VLAN trunking protocols associated with Fast Ethernet. The VLAN trunking protocol defined by 802.10 is associated with FDDI. LANE (LAN Emulation) is associated with ATM.
47. Compression algorithms supported by Cisco IOS are:
PPP is supported by STAC, Predictor, and MPPC. Compression algorithms supported by Frame-Relay for payload compression are STAC, and FRF.9.
48. Data Link Switching (DLSw) was introduced by IBM to overcome the limitations of SRB networks. The Cisco implementation of DLSw is called DLSw+. Benefits of DLSW+ are over SRB are:
49. The permitted numbers for some important access-lists are:
The format for standard IPX access list is:
access-list {number} {permit/ deny} {source} {destination}
50. By giving the command "show ip route igrp", we ca see the routes found by igrp. A route discovered by igrp is denoted by letter "I" before start of the entry.
51. 7 steps in building a Prototype are:
52. Default administrative distances are as below:
The administrative distance (metric) is used to represent the trustworthiness of the route. Lower the value, higher the trustworthiness. A value of 255 represents that the route is unreachable.
53. Private addresses are described in RFC 1918. There are one Class A network, 16 Class B networks and 255 Class C networks that belong to private address space. There are:
54. Cisco IOS supports
Please visit our sponsor:
