Designing and Supporting Computer Networks – Prototyping Remote Connectivity
Online Study Guide
CURR / Question / Answer8.1 /
Prototyping Remote Connectivity
8.1.2 / Testing WAN Connectivity with Simulation Softfware- List and describe the benefits that simulation software provides.
- What are the limitations of using software to validate the network design?
8.1.3 / Simulating WAN Connectivity in a Lab Environment
- What type of WAN Connections can be simulated in the lab?
- What type of provider provides wan links?
- What must be done to a serial interface to simulate a WAN if a CSU/DSU is not used
- What is the default WAN encapsulation on a Cisco router
- What can cause connection problem when using PPP (Lab 8.1.3)
8.2 /
Prototyping WAN Connectivity
8.2.2 / Creating a Test Plan- How is Scalability addressed in the Test Plan?
- How is Availability addressed in the Test Plan?
- How is Security addressed in the Test Plan?
- How is Manageability addressed in the Test Plan?
8.2.3 / Validating the Choice of Devices and Toplogies
- What is Frame Relay?
- What is the typical type of link for a Frame Relay connection?
- What does the local loop consist of?
- What is the DLCI?
- What are the two types of CIR and their differences?
- What is a DE and how does it relate to CIR?
- What is LMI?
- What are the three LMI standards used by LMI's?
- How does Frame Relay handle congestion on the circuit?
- Who receives a BCEN?
8.2.4 / Prototyping the WAN
- What are the two types of Frame Relay encapsulation?
- What is the purpose of Inverse-Arp?
- What is meant by a multi-access WAN?
- What is meant by NBMA?
- Why is split horizon a problem on NBMA connections?
- What are the two types of subinterfaces and their differences in a Frame Relay network?
- What command would you use to see if congestion is a problem?
- What two commands can be used to see the type of LMI used?
- What type of routing is commonly used on a Frame Relay network?
8.2.5 / Troubleshooting Frame Relay Operation
- How is a floating Static route configured?
- What command tells you the status of a pvc?
- What is ACTIVE, INACTIVE, DELETED, STATIC?
- What would indicate a Layer 1 problem?
- What command would you use to check a layer 2 problem?
- What is a type 0 message in a debug frame-relay lmi message? What is a type 1?
- What are the three common values for the DLCI status and what do they indicate?
- 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- What is a VPN?
- How does a VPN insure privacy?
- Why is the location of the VPN Server important in the network design?
8.3.2 / Creating the Test Plan
- What proprietary software makes VPN configuration simpler?
- What type of IOS is needed to use VPN?
- What is Cisco EasyVPN Server?
- What is Cisco EasyVPN Remote?
8.3.3 / Validate Choice of VPN Topology
- What are the two components VPN?
- What are the two types of Virtual Networks and how do they differ?
- What is encryption and what is the output called?
- List the most common VPN encryption methods.
- What encryption method requires a password that is the same and configured manually?
- What encryption method uses a public key exchange?
- What DH Group do Cisco devices use?
- What is the purpose of a hash?
- What is MD5?
- What HMAC uses a 160-bit hash algorithm?
8.3.4 / Prototype VPN Connectivity for Remote Workers
- What is IPSec and what layer does it function at in the OSI model?
- What settings must be configured for IPSec to work?
- What encryption algorithms can be used with IPSec?
- What is the purpose of IKE?
- Define Split tunneling.
- What is an advantage and disadvantage of using Split tunneling?
8.3.5 / Validate Placement of VPN Server
- Where does the designer recommend placing the VPN server and why?
8.3.6 /
Identify Risks or Weaknesses
- 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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