830-01 Rcpe Certified Professional WAN Optimization Practice Questions
Prepare for 830-01 with more than an answer.
- Exam fee
- $300 USD
- Level
- Professional
- Valid for
- Unknown
Domains covered on the exam 5
- Networking Fundamentals15%
- SteelHead Installation and Configuration25%
- SteelHead Administration and Troubleshooting20%
- SteelHead Optimization25%
- Performance Monitoring and Management15%
- 1
What is the primary function of the 'secure peering' feature on a SteelHead appliance?
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Correct answer: B
Secure peering uses a trust relationship, typically based on digital certificates, to ensure that a SteelHead will only peer with and optimize traffic for other trusted SteelHead appliances. This prevents unauthorized or rogue devices from participating in the optimization infrastructure.
- 2
An organization wants to preserve its existing QoS markings (DSCP values) set by core network routers as traffic traverses the SteelHead appliances. Which QoS setting must be configured on the SteelHeads to achieve this?
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Correct answer: C
When configuring QoS for the optimized traffic (the inner channel), setting the DSCP marking option to 'pass' (or 'passthrough') instructs the SteelHead to copy the DSCP value from the original, unoptimized packet's outer IP header to the optimized packet's outer IP header. This ensures that the original QoS markings are preserved across the optimized WAN link.
- 3
A financial firm has a strict requirement that all data replication traffic between two data centers must be optimized, but under no circumstances should the SteelHead modify the TCP payload. The goal is solely to achieve transport-level optimization. Which configuration should be implemented?
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Correct answer: B
This is the most precise way to achieve the goal. By creating a specific latency optimization policy for the application and setting the 'Data Reduction' policy to 'None', you instruct the SteelHead to engage its TCP proxy for transport optimization (like window scaling, congestion control) but to not perform any SDR or LZ compression, thus leaving the TCP payload unmodified. A simple 'Passthrough' rule would disable all optimization, including transport.
- 4
A network engineer is configuring a new SteelHead appliance using the command line interface. To prevent traffic from being dropped if the optimization service fails or is stopped, the engineer should set the in-path interface fail-to-____ parameter.
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Correct answer: B
The
fail-to-bypasssetting configures the hardware relays on the in-path network card. When the optimization service is not running or the appliance loses power, this setting causes the relays to close, creating a direct physical path between the LAN and WAN ports. This allows traffic to flow through the appliance unimpeded, ensuring network connectivity is maintained. - 5
Case Study: Global Retail Inc. is deploying SteelHeads at its data center and 500 retail stores. The data center has a SteelHead cluster, and each store has a single appliance. The primary application is a custom point-of-sale (POS) system that uses TLS encryption on TCP port 8443. The security team will not release the POS server's private key. The network team wants to centrally manage all 500 store appliances and ensure that only POS traffic is optimized. Which combination of technologies provides the most efficient and secure solution?
flowchart TD subgraph Data Center direction LR POS_Server[POS Server] --> Core_Switch Core_Switch --> SH_Cluster[SteelHead Cluster] SH_Cluster --> Router end subgraph Retail Store direction LR POS_Client[POS Client] --> Store_Switch Store_Switch --> Store_SH[SteelHead Appliance] Store_SH --> Store_Router end Router -- WAN --> Store_Router SCC[SteelCentral Controller] -.-> SH_Cluster SCC -.-> Store_SHShow answer details
Correct answer: B
This is the best solution. SteelCentral Controller (SCC) is designed for large-scale management. Pushing a policy with two ordered in-path rules (one specific for the POS app, one general for everything else) is the most efficient way to configure all 500 stores. Since the server's private key is unavailable, the standard and most secure method for SSL optimization is for the server-side SteelHead to act as a Certificate Authority (CA), dynamically signing certificates for intercepted traffic. The clients must trust this proxy CA, which can be accomplished efficiently via Group Policy (GPO).
- 6
A global logistics company is experiencing inconsistent optimization for their custom-built inventory management application, which communicates over TCP port 8443. Analysis reveals that traffic is intermittently passed through without optimization. The network architect suspects asymmetric routing. Which SteelHead CLI command would be most effective in confirming this specific issue?
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Correct answer: C
The
show stats asymmetric-routingcommand is specifically designed to display statistics about connections that have been detected as asymmetric. It provides counters for asymmetric connection attempts, which is the most direct way to confirm if the SteelHead is identifying and passing through traffic due to this condition. While other commands show connection details or errors, this one directly targets asymmetry detection. - 7
An engineer is configuring SSL optimization for traffic destined for a server that uses a certificate signed by a well-known public Certificate Authority (e.g., DigiCert). Which component is essential on the server-side SteelHead to correctly intercept and optimize this traffic without causing trust errors on the client's browser?
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Correct answer: D
For SSL optimization, the server-side SteelHead acts as a Man-in-the-Middle. It needs its own Certificate Authority (CA) certificate and private key to dynamically create and sign 'proxy' certificates for the servers clients are accessing. This proxy certificate is presented to the client-side SteelHead. The client browsers must be configured to trust this SteelHead CA certificate to avoid warnings. While the SteelHead must trust the public CA, the key component for the interception itself is its own signing capability.
- 8
A company is deploying SteelHeads to optimize SMBv3 traffic between its headquarters and a branch office. The security policy mandates that all SMBv3 traffic must be encrypted. The administrator has enabled SMBv3 optimization and configured signing on both SteelHeads. However, reports show no data reduction for this traffic. What is the most likely reason for this behavior?
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Correct answer: A
Optimizing encrypted SMBv3 traffic requires the server-side SteelHead to participate in the Kerberos authentication process. To do this, it must be joined to the Active Directory domain in the correct mode (e.g., Active Directory Integrated). Without domain membership, the SteelHead cannot obtain the necessary session keys to decrypt, optimize, and re-encrypt the traffic, resulting in the connection being passed through without data reduction.
- 9
A network administrator is reviewing the QoS configuration on a SteelHead appliance. They notice that an application classified as 'Real-Time' is experiencing poor performance during periods of high network congestion. Which TWO QoS settings should be investigated to prioritize this traffic effectively? (Select TWO)
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Correct answer: A, C
The DSCP mark tags the packet so that other network devices (routers, switches) can honor the priority level across the WAN. Ensuring the correct DSCP value (e.g., EF for Expedited Forwarding) is critical for end-to-end prioritization.
The traffic shaping policy on the SteelHead itself determines how bandwidth is allocated on the WAN link. The 'Real-Time' class must have a high priority and a guaranteed minimum bandwidth to ensure it is not starved by other traffic during congestion.
- 10
True or False: When a SteelHead appliance is deployed in a virtual in-path mode using WCCP, the appliance's in-path interface must be configured with an IP address on the same subnet as the router performing the redirection.
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Correct answer: A
In a WCCP deployment, the router encapsulates redirected packets using GRE and sends them to the SteelHead's in-path IP address. The SteelHead then processes the traffic and sends it back to the router. For this communication to function correctly, the router and the SteelHead's in-path interface must be able to communicate at Layer 3, which typically requires them to be on the same IP subnet.
