[2024年11月]更新のF5 302テストエンジンとPDFで完全版無料問題集を無料提供
最新版を今すぐ試そう302認定有効な試験問題集
F5 302 認定試験は、F5 BIG-IP DNS の管理における専門知識を証明したい IT プロフェッショナル向けに設計されています。DNS、DNSSEC、GSLB、Wide IPs、iRules、DNS Express など、F5 BIG-IP DNS の高度な機能に関する幅広い知識が必要な専門レベルの試験です。
質問 # 221
What is the GTM Screening mode Deployment type ?
- A. It is named "Authoritative Screening Architecture"
It gives the ability of applying the all GSLB Features - B. It allows the GTM receive all DNS Queries
It allows the GTM To load balance the incoming the DNS Queries to a pool of DNS Servers It allows the WAP receive all DNS Queries It allows the GTM To load balance the incoming the DNS Queries to a pool of DNS Servers It allows the F5 APM To load balance the incoming the DNS Queries to a pool of DNS Servers
正解：A、B
解説：
The GTM Screening mode Deployment type is named "Authoritative Screening Architecture" because it gives the ability to apply all GSLB features, allowing the Global Traffic Manager to effectively manage and optimize traffic distribution across multiple data centers or servers.
The GTM Screening mode Deployment type allows the GTM to receive all DNS queries, enabling it to load balance the incoming DNS queries to a pool of DNS servers. This ensures efficient distribution of traffic and optimal performance for the applications or services being accessed.
Domain
Load balancing types
質問 # 222
What is the importance of the Order in topology records Configuration ?
- A. The Order deletes the position of the record within the record list
- B. The Order identifies the position of the record within the record list
正解：B
解説：
The Order in topology records configuration is crucial as it identifies the position of the record within the record list. This is important because the order in which records are listed can impact how traffic is directed and resolved by the GTM system. By setting the correct order, you can ensure that the desired record is prioritized and used effectively in the resolution process.
質問 # 223
To which location will the BIG-IP DNS system logs the messages that are related to the health monitor ?
- A. To the following File : /var/ltm
- B. To the following File : /var/log/gtm
正解：B
解説：
The correct choice is A because the BIG-IP DNS system logs messages related to health monitors to the
/var/log/gtm file. This file specifically captures information related to Global Traffic Manager (GTM) functionality, including health monitor status and performance data.
Domain
Health Monitor
質問 # 224
What are the types of the Zone Transfer ?
- A. delegated Zone Transfer
- B. Incremental Zone Transfer
- C. Full Zone Transfer
- D. deleted Zone Transfer
正解：B、C
解説：
Full Zone Transfer is a type of Zone Transfer that transfers the entire zone file from the primary DNS server to the secondary DNS server. This type of transfer is typically used when setting up a new secondary server or during a full synchronization of zone data between servers.
Incremental Zone Transfer is a type of Zone Transfer that transfers only the changes or updates made to the zone file since the last transfer. This type of transfer is more efficient than a full transfer as it reduces the amount of data transferred between servers, saving bandwidth and time.
質問 # 225
What are the Steps required to renew the Digital Certificate ?
- A. 6- Installing the SSL Private Key and Digital Certificate
7-Associating the installed Private Key and SSL Certificate to the SSL Profile - B. 4-Submitting the CSR to the CA
5-Receiving the New SSL Certificate from the CA and Storing it in a specific Directory Location
6- deleting the SSL Private Key and Digital Certificate
7-deleting the installed Private Key and SSL Certificate of the SSL Profile - C. 1-Generating a private key and storing it to a specific directory location
2-Generating a New CSR and storing it to a specific directory location
3- Verifying the CSR using a tool provided by the CA
正解：A、B、C
解説：
Generating a private key and a new CSR are the initial steps required to renew a digital certificate. The private key is essential for encrypting data, and the CSR is necessary for requesting a new certificate from the Certificate Authority (CA). Verifying the CSR ensures that the information provided is accurate and valid before submission to the CA.
Submitting the CSR to the CA is a crucial step in the certificate renewal process. The CA will issue a new SSL certificate based on the information in the CSR. Once the new certificate is received, it should be stored in a specific directory location for future use in the SSL profile.
Installing the SSL private key and digital certificate, and associating them with the SSL profile, are the final steps in renewing a digital certificate. These actions ensure that the new certificate is properly configured and ready to secure communication between clients and servers.
Domain
Dgigital certificate-Openssl
質問 # 226
True or false the Normal DNS Resolution process of any DNS Record could be performed over the TCP Connection?
- A. False
- B. True
正解：B
解説：
True. The Normal DNS Resolution process of any DNS Record could indeed be performed over a TCP Connection. While DNS typically uses UDP for its queries due to its speed and efficiency, if the response size exceeds the UDP packet size limit (512 bytes), it will switch to using TCP for the query.
Domain
Zone Transfer
質問 # 227
What is the iterative Query ?
- A. The DNS Receiver will continue to query other servers until getting the resolution or even an error message indicating that the FQDN Doesn't exist
- B. This type of Query allows the DNS server to direct the client system to other DNS Server that will help resolving the Query
- C. The DNS Server will redirect the Requester to other DNS Server that may help in resolving the Query
正解：B、C
解説：
An iterative query in DNS allows the DNS server to direct the client system to other DNS servers that may have more information to help resolve the query. This process involves the DNS server providing a referral to other servers that can assist in resolving the query, making it a collaborative effort to find the necessary information.
In an iterative query scenario, the DNS server will redirect the requester to other DNS servers that may have additional information to help in resolving the query. This redirection process allows for a more efficient and distributed approach to resolving DNS queries by leveraging the resources and knowledge of multiple servers in the DNS infrastructure.
Domain
DNS Data flow
質問 # 228
What will happen if the Preferred Load balancing Method fails ?
- A. The System use the alternate Load balancing method
- B. The 3rd party system use the alternate Load balancing method
正解：A
解説：
In F5 GTM Implementation, if the Preferred Load Balancing Method fails, the system will automatically switch to the alternate Load Balancing Method to ensure continuous and uninterrupted traffic distribution. This failover mechanism is crucial for maintaining high availability and reliability in the network infrastructure.
質問 # 229
What are the main levels of the Hierarchy of the DNS system?
- A. The TOP Level Domain
- B. The Level of the Zero Level Domain
- C. The Level of the 10th Level Domain
- D. The Root Domain
- E. The Second Level Domain
正解：A、D
解説：
The Root Domain is the highest level in the DNS hierarchy and is represented by a dot (.) at the end of domain names. It is responsible for delegating authority to the Top Level Domains and is the starting point for resolving domain names.
The Top Level Domain (TLD) is the next level below the Root Domain and includes domain extensions such as .com, .org, .net, and country code TLDs like .us, .uk, etc. It is managed by various domain registries and is an essential part of the DNS system.
The Second Level Domain is the level below the Top Level Domain and is where domain owners can register unique domain names for their websites. It is the part of the domain name that is customizable and helps identify specific organizations or entities on the internet.
質問 # 230
Given that the F5 GTM is configured to Synchronize the DNS Zone file :
What must be done to prevent the Zone journal File from being Synchronized ?
- A. Is to freeze the Zone on all GTM Systems which are members of the Synchronization group .
- B. Is to block the all GTM Systems
正解：A
解説：
Freezing the Zone on all GTM Systems that are part of the Synchronization group will prevent the Zone journal file from being synchronized. By freezing the Zone, changes made to the Zone will not be propagated to other GTM Systems, ensuring that the Zone journal file remains unaffected by synchronization.
Domain
ZoneRunner
質問 # 231
What are the 2 main methods of the Recursion Process?
- A. A-Forwarding Approach
- B. Root Hints Approach
- C. Reversing Approach
正解：A、B
解説：
The A-Forwarding Approach is one of the main methods of the Recursion Process in F5 GTM Implementation. This approach involves the GTM forwarding the DNS query directly to the authoritative name server for resolution, bypassing the normal recursive resolution process.
The B-Root Hints Approach is another main method of the Recursion Process in F5 GTM Implementation.
This approach involves the GTM using root hints to determine the authoritative name servers for the requested domain and then forwarding the DNS query to those authoritative servers for resolution.
質問 # 232
What is the meaning of disabling the name resolution of the hostname and service port using "-nn" filter in the tcpdump command ?
- A. Is to disable the Lookup for the identified host and the service port in the TCPDUMP Command ?
- B. Is to enable the Lookup for the identified host and the service port in the TCPDUMP Command ?
正解：A
解説：
Disabling the name resolution of the hostname and service port using the "-nn" filter in the tcpdump command means that the command will not perform any DNS lookups to resolve the identified host and service port to their corresponding names. This can be useful in situations where DNS resolution may introduce delays or where the focus is solely on the IP addresses and port numbers without the need for hostnames.
Domain
TCPDUMP
質問 # 233
When will the SOA be created ?
- A. There is a SOA Record for each Device
- B. When DHCP Server Configured
- C. When Active directory Configured
- D. There is a SOA Record for each master Zone file
正解：D
解説：
In the context of DNS, the Start of Authority (SOA) record is created for each master zone file. This record contains essential information about the zone, such as the primary name server, the email address of the administrator responsible for the zone, the serial number to track changes, and other parameters. Therefore, there is a SOA record for each master zone file in DNS.
Domain
F5 GTM concept
質問 # 234
What is the command required to install the existing Private Key to the F5 BIGIP File Store ?
- A. tmsh configure /sys crypto key <key_name> from-local-file <key_path_and_name>
- B. tmsh install /sys crypto key <key_name> from-local-file <key_path_and_name>
- C. tmssh install /sys crypto key <key_name> from-local-file <key_path_and_name>
正解：B
解説：
The correct command to install an existing Private Key to the F5 BIG-IP File Store is "tmsh install /sys crypto key from-local-file ". This command specifies the location of the key file and the name under which it will be stored in the File Store, ensuring that the key is successfully installed and accessible for use.
Domain
Dgigital certificate-Openssl
質問 # 235
Given the following command :
openssl genrsa -out /config/ssl/ssl.key/f5BIGIPKEY.com_2024.key 2048
What is the directory to which will private key be stored ?
- A. /config/ssl/tll.key
- B. /config/ssl/ssl.key/
正解：B
解説：
The correct directory where the private key will be stored is /config/ssl/ssl.key/. This is because in the provided command, the output path specified after the -out flag is
/config/ssl/ssl.key/f5BIGIPKEY.com_2024.key, indicating that the private key file will be stored in the ssl.key directory within the ssl directory.
Domain
Dgigital certificate-Openssl
質問 # 236
What is the usage of the following filter in the tcpdump command :"-x"
- A. Showing the input of the tcpdump command in both ASCII and Hex
- B. Showing the output of the tcpdump command in both ASCII and Hex
正解：B
解説：
The "-x" filter in the tcpdump command displays the output in both ASCII and hexadecimal format. This can be useful for analyzing network traffic and understanding the data being transmitted.
Domain
TCPDUMP
質問 # 237
What is the length of each field in the DNS Header message ?
- A. 81 bit
- B. 16 bit
- C. 18 bit
正解：B
解説：
The length of each field in the DNS Header message is 16 bits. This allows for a maximum value of 65535, which is sufficient for storing information such as the identification number, flags, question count, answer count, authority count, and additional count in the DNS header.
Domain
DNS
質問 # 238
What is the Emergency rollover approach that is recommended by F5 When generating the Keys ?
- A. Assign the both versions to the Different Zones
- B. Is to generate a duplicated version of the Key with similar name
- C. Assign the both versions to the same Zone
正解：B、C
解説：
The emergency rollover approach recommended by F5 is to generate a duplicated version of the key with a similar name. This ensures that there is a backup key available in case the primary key becomes compromised or needs to be rotated quickly.
Assigning both versions of the key to the same zone ensures that both keys are available and can be easily managed within the same zone. This simplifies key management and ensures that the backup key is readily accessible when needed.
Domain
F5 GTM Security
質問 # 239
What is the impact of downloading a big3d process form the Enterprise manager to a different version of bgi3d on other GTM system ?
- A. No impact
- B. The GTM System will temporary change the status of the all upgraded hosted objects over the GTM System to offline
正解：B
解説：
When downloading a big3d process from the Enterprise manager to a different version of bgi3d on other GTM systems, the GTM system will temporarily change the status of all upgraded hosted objects over the GTM system to offline. This is because the process of downloading and upgrading the big3d process may require a temporary interruption in the hosted objects' status until the upgrade is completed successfully.
Domain
big3d
質問 # 240
True or false :
The Client can performs the "SOA" Record Lookup even before Opening a TCP Connection?
- A. False
- B. True
正解：B
解説：
True. The Client can perform the "SOA" Record Lookup even before opening a TCP connection. This is because the SOA (Start of Authority) record is a DNS resource record that contains administrative information about the DNS zone. It can be queried by the client before establishing a TCP connection to the server.
Domain
Zone Transfer
質問 # 241
True or false :
the big3d install script copies the trusted device certificate from the local GTM to the "/config/gtm/client.crt" file on remote BIGIP System
- A. False
- B. True
正解：B
解説：
True. The big3d install script is responsible for copying the trusted device certificate from the local GTM to the "/config/gtm/client.crt" file on the remote BIG-IP system. This certificate is essential for establishing trust between the devices and enabling secure communication.
Domain
big3d
質問 # 242
What is the length of the "QR" subfield in the Header field of the DNS Message ?
- A. 4 BITS
- B. 1 BIT
正解：B
解説：
The "QR" subfield in the Header field of the DNS Message is actually 1 bit in length, not 4 bits. This bit is used to differentiate between a query and a response in the DNS message. Having a length of 4 bits would not align with the standard DNS message format and would lead to incorrect interpretation of the message.
5 BITS
Explanation:
The "QR" subfield in the Header field of the DNS Message is not 5 bits in length; it is actually 1 bit. This 1-bit field is crucial for distinguishing between a query and a response in the DNS message. Having a length of 5 bits would not align with the standard DNS message format and would introduce inconsistencies in the communication between DNS clients and servers.
The "QR" subfield in the Header field of the DNS Message is 1 bit in length. This bit is used to indicate whether the message is a query (0) or a response (1). It is a crucial part of the DNS message header and plays a significant role in the communication between DNS clients and servers.
Domain
DNS
質問 # 243
What is the usage of using the filter "-A" in the tcpdump command ?
- A. Showing the output of the tcpdump command in ASCII .
- B. Showing the output of the tcpdump command in HEX.
正解：A
解説：
The filter "-A" in the tcpdump command is used to display the output in ASCII format. This is useful for viewing and analyzing the network traffic data in a human-readable format, making it easier to interpret and troubleshoot any issues that may arise.
Domain
TCPDUMP
質問 # 244
What is the resource record ?
- A. Resource records files contains information about the DNS Zones
- B. They are the entries in the Routing table
- C. Resource records are files in Hierarchical Structure from which the Domain Name system is build
- D. They are the entries in the email server
正解：A、C
解説：
Resource records are essential components of the Domain Name System (DNS) and are stored in files with a hierarchical structure. These records contain information such as IP addresses, domain names, and other data necessary for DNS resolution and mapping.
Resource record files contain detailed information about DNS zones, including mappings between domain names and IP addresses, mail exchange records, name server records, and other essential DNS data. These files are crucial for the proper functioning of the DNS infrastructure.
Domain
F5 GTM concept
質問 # 245
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F5 302（BIG-IP DNSスペシャリスト）認定試験は、90分以内に完了する必要がある50の複数選択質問で構成されています。試験の合格スコアは69％であり、試験に合格した候補者には、F5認定のBIG-IP DNSスペシャリスト認定が授与されます。認定は2年間有効であり、その後、候補者は認定ステータスを維持するために再認定する必要があります。再認証は、現在のバージョンの試験を合格するか、F5が承認した継続教育コースを通じてクレジットを獲得することで達成できます。
F5 302 認定試験は、BIG-IP DNS に特化した専門家にとって必要不可欠な認定資格です。この認定試験は、DNS 技術に関する知識と BIG-IP プラットフォーム上での DNS の設定とトラブルシューティング能力を評価します。この認定を取得することで、候補者の DNS 技術に対する専門知識とプロフェッショナルとしてのコミットメントが証明されます。
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