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| Section | Weight | Objectives |
|---|---|---|
| Advanced Routing and Switching Technology | 37% | - BGP
|
| WAN Interconnection Network Planning and Deployment | 8% | - SD-WAN
|
| Bearer WAN Planning and Deployment | 15% | - SR (Segment Routing)
|
| Campus Network Planning and Deployment | 23% | - Overlay Network (VXLAN)
|
| Network Automation | 17% | - iMaster NCE
|
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NEW QUESTION # 168
An engineer needs to download the configuration file vrpcfg.cfg to a local device through SFTP, rename the configuration file to backup.cfg, and upload it to the default directory of the device.
The configuration file is located at /vrpcfg.cfg (default directory of the remote device), and the local directory is C:\.
Which of the following Python Paramiko code lines can implement the required operations?
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
# The correct sequence of operations:
* Download the file from remote device (/vrpcfg.cfg) # Store as C:\backup.cfg.
* Upload the renamed file (backup.cfg) back to the remote device.
# Breaking Down the Correct Option (B):# sftp.get('/vrpcfg.cfg', r'C:\backup.cfg') # Downloads vrpcfg.
cfg from the remote device and renames it backup.cfg in C:\.# sftp.put(r'C:\backup.cfg', '/') # Uploads backup.cfg back to the remote device.
# Reference: Huawei HCIE Datacom - Python SFTP File Transfer Using Paramiko
NEW QUESTION # 169
There can be multiple nodes under a route -policy, different node numbers are identified by nodes, and each node can have multiple if-match and apply clauses, which of the following descriptions are wrong ?
Answer: A,D
NEW QUESTION # 170
An engineer often remotely logs in to the device to check the device status. The engineer can use the Python Paramiko and telnetlib libraries to implement automatic remote login through Python scripts.
The remote login implemented using telnetlib is more secure.
Answer: B
Explanation:
Comparison Between Paramiko (SSH) and Telnetlib (Telnet)
# Paramiko (SSH) is more secure than Telnetlib (Telnet).
* SSH (Secure Shell) encrypts login credentials and session data using encryption protocols like AES and RSA.
* Telnet transmits data in plaintext, making it vulnerable to eavesdropping and man-in-the-middle attacks.
# Why is Telnet Insecure?
* No encryption # Credentials (username/password) are sent in plaintext.
* Easily intercepted by attackers using packet sniffers (e.g., Wireshark).
Correct Method for Secure Remote Login in Python:
* Use Paramiko for SSH-based secure automation.
* Example of logging in with Paramiko (SSH) in Python:
import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect("192.168.1.1", username="admin", password="password")
stdin, stdout, stderr = ssh.exec_command("display version")
print(stdout.read().decode())
ssh.close()
Reference from Huawei HCIE-Datacom Documentation:
* Huawei Security Best Practices - Avoiding Telnet and Using SSH for Secure Access
* HCIE-Datacom Training Material - Network Automation with Python (Paramiko & Telnetlib)
NEW QUESTION # 171
On the campus network shown, IPv6 is deployed for service tests. Four routers are deployed on the network, and OSPFv3 is used for IPv6 network connectivity. An engineer checks the LSDB of R2 and obtains a Link-LSA. Which of the following statements about the LSA are correct?
Answer: A,B,D
Explanation:
In OSPFv3, Link-LSA (Type 8) is generated by a router for each of its interfaces to advertise:
The router's link-local address on that interface.
The IPv6 prefixes associated with the interface.
Flags and options, such as router priority or loopback indicators.
From the output:
Link-LSA (Interface GigabitEthernet0/0/0)
Originating Router: 10.1.2.2
Link-Local Address: FE80::2E0:FCFF:FECD:4F79
Prefix: 2001:DB8:2345:23::/64
A . The link-local address of R2's GE0/0/0 is FE80::2E0:FCFF:FECD:4F79→ This matches the Link-Local Address field in the LSA. ✅ B . The IPv6 address prefix of R2's GE0/0/0 is 2001:DB8:2345:23::/64→ This matches the Prefix field in the LSA. ✅ C . This LSA indicates that R2 does not support external routes but can participate in IPv6 route calculation→ ❌ Incorrect.
The Link-LSA does not provide any indication about external route capabilities.
It simply advertises interface-specific IPv6 and link-local info.
Whether R2 supports external routes depends on Type 5 (External) or Type 7 (NSSA) LSAs, not Link-LSAs.
D . This LSA is generated by R2→ The Originating Router: 10.1.2.2 is R2's router ID, so this LSA is definitely generated by R2. ✅ Correct Answers: A, B, D The Link-LSA in OSPFv3 contains:
The link-local address used by the originating router on the link.
A list of all IPv6 prefixes associated with the link.
Flags such as router priority and the Router-LSA options.
These LSAs are always generated by the router itself and are not flooded beyond the link.
NEW QUESTION # 172
Which of the following are application optimization functions in the Huawei SD-WAN Solution?
Answer: A,B,C,D
Explanation:
Huawei'sSD-WAN solutionoffers a full suite of application optimization technologies, including:
Application identification: Uses DPI and traffic signatures to identify applications.
Intelligent traffic steering: Dynamically routes traffic based on application type and real-time link performance.
WAN optimization: Reduces latency, deduplicates traffic, and optimizes throughput for key apps.
QoS: Prioritizes critical applications and ensures bandwidth guarantees.
All listed options are part of the Huawei SD-WAN solutionfor optimizing user experience and application performance.
Correct answers: A, B, C, D
NEW QUESTION # 173
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