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| Section | Weight | Objectives |
|---|---|---|
| Switching Technologies | 7% | - VLAN and STP fundamentals |
| Large-scale WLAN Architecture | 6% | - Enterprise WLAN deployment basics |
| IPv6 | 3% | - IPv6 addressing and routing |
| IS-IS | 8% | - IS-IS protocol fundamentals |
| BGP | 17% | - BGP policy and attributes - BGP path selection |
| Routing and Traffic Control | 10% | - Traffic engineering basics - Policy-based routing |
| Network Reliability | 8% | - Redundancy and failover mechanisms |
| Network Security | 9% | - ACL and basic security mechanisms |
| Network Solution | 2% | - Integrated network design scenarios |
| Multicast | 9% | - IGMP and PIM concepts |
| Routing Fundamentals | 3% | - Network basics and routing principles |
| Network Service and Management | 2% | - Network management basics |
| OSPF | 16% | - OSPF core concepts - OSPF areas and LSDB |
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NEW QUESTION # 66
In a route-policy, which of the following BGP attributes can be used in apply clauses?
Answer: B,C
Explanation:
In a route-policy, attributes such as MED (Multi-Exit Discriminator) and Local-Preference can be used in apply clauses to influence BGP route selection. Attributes like AS_Path and Tag are typically matched or filtered but not directly applied in the apply clause .
NEW QUESTION # 67
As shown in the figure, the four switches have been running and configured with the MSTP protocol. SW2 is the root bridge of Instance 20 and the backup root bridge of Instance 10. Which of the following results can be displayed by running the display stp brief command on R2?
Answer: D
NEW QUESTION # 68
On an ISIS network, each router has at least one NET. If a router is configured with multiple NETs, ensure that these NETs have the same system ID.
Answer: B
NEW QUESTION # 69
In VRRP networking, devices assume the Master and Backup roles after election. Match the two roles with their working mechanisms.(Token is reusable)
Answer:
Explanation:
A screenshot of a computer Description automatically generated
Explanation of VRRP Roles and Their Functions:
In VRRP (Virtual Router Redundancy Protocol), devices are assigned roles as either Master or Backup after an election process. Each role has specific responsibilities to ensure the availability of the virtual IP address.
Matching Roles and Mechanisms:
Master:
* Periodically send VRRP Advertisement packets.
* The Master device sends advertisement packets to inform Backup devices that it is active.
* Respond to an ARP request destined for a virtual IP address with an ARP reply carrying the virtual MAC address.
* The Master device is responsible for responding to ARP requests for the virtual IP and forwarding traffic for it.
Backup:
* Transition from Master to Backup immediately if a VRRP Advertisement packet with a higher priority is received.
* A Backup device becomes Master only if the current Master stops sending advertisement packets or has a lower priority.
* Discard IP packets destined for the virtual IP address.
* Backup devices do not process traffic for the virtual IP address unless they become the Master.
NEW QUESTION # 70
IP multicast effectively conserves network bandwidth and reduces network load. Therefore, it is widely used in network services, such as IPTV, real-time data transmission, and multimedia conferencing.
Answer: B
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of IP Multicast:
* IP multicast is a method of delivering data from one source to multiple destinations simultaneously.
* Unlike unicast (one-to-one communication) or broadcast (one-to-all communication), multicast is one- to-many, allowing data to be sent only to subscribers (multicast group members).
* This significantly conserves bandwidth and reduces the load on the network because the source only sends a single stream of data, which is replicated by multicast routers as needed.
2. Use Cases for IP Multicast:
IP multicast is widely used in network services that involve real-time or large-scale data delivery, such as:
* IPTV (Internet Protocol Television): Broadcasting live TV streams.
* Real-Time Data Transmission: Delivering stock market data, sensor updates, etc.
* Multimedia Conferencing: Supporting group calls, webinars, and online meetings.
3. Why the Statement is TRUE:
* IP multicast reduces unnecessary traffic and maximizes efficiency, making it ideal for these types of network services.
NEW QUESTION # 71
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