H12-811_V1.0 Exam Dumps : HCIA-Datacom V1.0 Exam

Router Initialization:

When a router boots up, it attempts to load its configuration file from the default save directory to initialize.

If the configuration file is missing, the router defaults to preconfigured parameters to ensure basic functionality.

Default Parameters:

These parameters include IP routing, interface defaults, and system-level settings. They allow network administrators to connect and manually configure the router.

Why Other Options Are Incorrect:

B: The "initial configuration file" refers to the manually created file, which may not exist.

C: The "current configuration file" is used during runtime but does not persist through reboots if unsaved.

D: A "new configuration file" must be manually created and does not exist by default.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 2: Device Initialization.

Detailed Explanation:OSPF (Open Shortest Path First) has several key advantages:

It can load balance traffic among equal-cost routes.

OSPF supports hierarchical area structures, allowing for network scalability and reduced routing table sizes.

OSPF supports strong security measures through packet authentication (MD5 or plain text).

It supports Classless Inter-Domain Routing (CIDR), allowing for more efficient IP address allocation and route aggregation.

Analysis of Possible Causes:

Option A: "The administrator account has been disabled" is a possible cause as a disabled account cannot access the system even if Telnet is enabled.

Option B: Incorrect because the Telnet service being disabled would affect all users, not just one administrator.

Option C: "The administrator account has been deleted" is a valid reason as a deleted account cannot log in.

Option D: "The user level of the administrator account has been changed to 0" is correct. User level 0 typically has insufficient privileges for Telnet access​​.