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여러분은F5 F5CAB5인증시험을 패스함으로 IT업계관련 직업을 찿고자하는 분들에게는 아주 큰 가산점이 될수 있으며, 성덩한 IT업계사업자와 한걸음 가까와 집니다.
| Section | Weight | Objectives |
|---|---|---|
| Local Traffic Management (LTM) | 30% | - Virtual servers (Standard, Performance L4, Forwarding) - Health monitors and monitory types - Pools and pool members - SSL profiles and offloading - Load balancing modes - iRules and persistence profiles |
| Troubleshooting and Support | 25% | - Common troubleshooting scenarios - iRules debugging - tcpdump and network capture - SNMP and monitoring - Performance and resource monitoring - Logging and log configuration |
| Security and Access | 10% | - User authentication (Remote Auth, LDAP, RADIUS) - Packet filtering - Role-based access control (RBAC) - SSL/TLS configuration |
| Architecture and Components | 15% | - Device service clustering (DSC) - BIG-IP system architecture - High availability (HA) configurations - Traffic flow and packet processing |
| Initial Setup and Configuration | 20% | - NTP and DNS configuration - Initial provisioning (Provisioning, License) - User management and role-based access - Network configuration (VLANs, Self IPs, Routes) - Network failover setup |
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질문 # 65
Which menu should you use on the BIG-IP Configuration Utility to generate a QKView support file? (Choose one answer)
정답：B
설명：
A QKView is the primary diagnostic file used by F5 Support to analyze BIG-IP system health, configuration, performance, and logs. It collects a wide range of data, including running configuration, license details, module provisioning, hardware status, logs, statistics, and diagnostic command output. Generating a QKView is a standard first step when troubleshooting issues or opening a support case with F5.
In the BIG-IP Configuration Utility (GUI), the correct location to generate a QKView is System > Support (Option C). This menu is specifically designed for support and troubleshooting activities. From this section, administrators can create QKView files, upload them directly to F5 iHealth, or download them locally for later analysis or submission to F5 Support.
The other options are incorrect:
System > Configuration (Option A) is used for system-wide settings such as device name, NTP, and DNS.
System > Archive (Option B) is used to create UCS backups, not diagnostic QKViews.
System > Logs (Option D) is used to view and manage log files, not to generate support bundles.
This workflow is clearly documented in BIG-IP Administration and Support guides and is considered a best practice for efficient troubleshooting and support engagement.
질문 # 66
Which process is most likely responsible for high traffic processing CPU usage?
정답：C
설명：
TMM handles traffic processing and is usually responsible for high CPU under load.
질문 # 67
A custom HTTP monitor is failing to a pool member 10.10.3.75:8080 that serves up www.example.com. A ping works to the pool member address. The SEND string is: GET / HTTP/1.1 \r\nHost: www.example.com\r\nConnection: Close\r\n\r\n. Which CLI tool syntax will show whether the web server returns the correct HTTP response?
정답：C
설명：
To manually verify a health monitor's "Send String" from the BIG-IP command line, the curl utility is the preferred tool because it allows for custom header insertion.
Matching the Monitor String: The monitor string requires an HTTP/1.1 request which must include a "Host" header. Option A correctly uses the --header (or -H) flag to pass Host: www.example.com to the specific IP and port of the pool member.
Troubleshooting Logic: If curl --header 'Host: www.example.com' 'http://10.10.3.75:8080/' returns a "200 OK" but the BIG-IP monitor still shows "Down," the administrator should check if the Receive String in the monitor configuration matches the output provided by curl.
Invalid Syntax: Option D is incorrect because it tries to append the hostname to the URI path, which the web server will likely reject with a "404 Not Found". tracepath (Options B and C) is a path discovery tool similar to traceroute and cannot validate HTTP response content.
질문 # 68
Refer to Exhibit. An organization is reporting slow performance accessing their Intranet website, hosted in a public cloud. All employees use a single Proxy Server with the public IP of
104.219.110.168 to connect to the Internet. What should the BIG-IP Administrator of the Intranet website do to fix this issue?
정답：C
설명：
This scenario describes a classic network performance issue known as the "Mega-Proxy" problem. When an organization routes all employee traffic through a single proxy server, the BIG- IP sees thousands of unique users as having the exact same source IP address. If the administrator has configured "Source Address Affinity" persistence, the BIG-IP will correctly follow the rule but incorrectly route all users to the same single backend pool member. This creates a severe load imbalance where one server is overwhelmed while others remain idle, leading to poor application response times. To resolve this, the administrator must change the persistence profile to "HTTP Cookie". Cookie-based persistence allows the BIG-IP to place a unique identifier in each user's browser, allowing the system to distinguish between individual sessions even if they share the same source IP. This fix ensures that traffic is distributed evenly across the pool members, restoring the expected load balancing functionality and resolving the slow performance reported by users behind the corporate proxy.
질문 # 69
The BIG-IP Administrator is investigating disk utilization on the BIG-IP device. (Exhibit shows /dev/md4 mounted on / at 100% utilization). What should the BIG-IP Administrator check next?
정답：A
설명：
Comprehensive and Detailed Explanation From BIG-IP Administration Support and Troubleshooting documents: Monitoring resource utilization is essential for maintaining system stability. If the root (/) file system reaches 100% capacity, the BIG-IP may become unresponsive, fail to save configuration changes, or experience daemon crashes83. When the / partition is full, the immediate troubleshooting step is to identify large or unnecessary files-such as old log files, core dumps, or temporary installer files-located specifically within that file system84. In the provided exhibit, /dev/md4 is explicitly listed at 100% usage for the / mount point85. Checking other partitions like /usr (which is at 82% in the exhibit) would not resolve the immediate
"Full" status of the root directory86. Administrators often use the du (disk usage) command via the CLI to find the problematic files. Managing disk space is a proactive task; however, when utilization hits 100%, it becomes a reactive troubleshooting emergency that must be resolved to restore the management plane's functionality.
질문 # 70
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