Designing and Supporting Computer Networks – Prototyping Remote Connectivity

Online Study Guide

CURR / Question / Answer
8.1 /

Prototyping Remote Connectivity

8.1.2 / Testing WAN Connectivity with Simulation Softfware
  1. List and describe the benefits that simulation software provides.

  1. What are the limitations of using software to validate the network design?

8.1.3 / Simulating WAN Connectivity in a Lab Environment
  1. What type of WAN Connections can be simulated in the lab?

  1. What type of provider provides wan links?

  1. What must be done to a serial interface to simulate a WAN if a CSU/DSU is not used

  1. What is the default WAN encapsulation on a Cisco router

  1. What can cause connection problem when using PPP (Lab 8.1.3)

8.2 /

Prototyping WAN Connectivity

8.2.2 / Creating a Test Plan
  1. How is Scalability addressed in the Test Plan?

  1. How is Availability addressed in the Test Plan?

  1. How is Security addressed in the Test Plan?

  1. How is Manageability addressed in the Test Plan?

8.2.3 / Validating the Choice of Devices and Toplogies
  1. What is Frame Relay?

  1. What is the typical type of link for a Frame Relay connection?

  1. What does the local loop consist of?

  1. What is the DLCI?

  1. What are the two types of CIR and their differences?

  1. What is a DE and how does it relate to CIR?

  1. What is LMI?

  1. What are the three LMI standards used by LMI's?

  1. How does Frame Relay handle congestion on the circuit?

  1. Who receives a BCEN?

8.2.4 / Prototyping the WAN
  1. What are the two types of Frame Relay encapsulation?

  1. What is the purpose of Inverse-Arp?

  1. What is meant by a multi-access WAN?

  1. What is meant by NBMA?

  1. Why is split horizon a problem on NBMA connections?

  1. What are the two types of subinterfaces and their differences in a Frame Relay network?

  1. What command would you use to see if congestion is a problem?

  1. What two commands can be used to see the type of LMI used?

  1. What type of routing is commonly used on a Frame Relay network?

8.2.5 / Troubleshooting Frame Relay Operation
  1. How is a floating Static route configured?

  1. What command tells you the status of a pvc?

  1. What is ACTIVE, INACTIVE, DELETED, STATIC?

  1. What would indicate a Layer 1 problem?

  1. What command would you use to check a layer 2 problem?

  1. What is a type 0 message in a debug frame-relay lmi message? What is a type 1?

  1. What are the three common values for the DLCI status and what do they indicate?

  1. How can you statically map a DLCI to an IP address when you cannot use inverse-arp?

8.3 /

Prototyping the WAN

8.3.1 / Identifying VPN Goals and Requirements
  1. What is a VPN?

  1. How does a VPN insure privacy?

  1. Why is the location of the VPN Server important in the network design?

8.3.2 / Creating the Test Plan
  1. What proprietary software makes VPN configuration simpler?

  1. What type of IOS is needed to use VPN?

  1. What is Cisco EasyVPN Server?

  1. What is Cisco EasyVPN Remote?

8.3.3 / Validate Choice of VPN Topology
  1. What are the two components VPN?

  1. What are the two types of Virtual Networks and how do they differ?

  1. What is encryption and what is the output called?

  1. List the most common VPN encryption methods.

  1. What encryption method requires a password that is the same and configured manually?

  1. What encryption method uses a public key exchange?

  1. What DH Group do Cisco devices use?

  1. What is the purpose of a hash?

  1. What is MD5?

  1. What HMAC uses a 160-bit hash algorithm?

8.3.4 / Prototype VPN Connectivity for Remote Workers
  1. What is IPSec and what layer does it function at in the OSI model?

  1. What settings must be configured for IPSec to work?

  1. What encryption algorithms can be used with IPSec?

  1. What is the purpose of IKE?

  1. Define Split tunneling.

  1. What is an advantage and disadvantage of using Split tunneling?

8.3.5 / Validate Placement of VPN Server
  1. Where does the designer recommend placing the VPN server and why?

8.3.6 /
Identify Risks or Weaknesses
  1. What is a strength in selecting to use EasyVPN and SDM in the stadium design?

Discovery Designing and Supporting Computer Networks – 08 Prototyping the WAN

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