IS-IS Principles and Configuration
6 practice questions under this official exam objective (H12-821), each with the answer key, an option-by-option explanation and instant feedback.
Questions under this objective
6 total · page 1 of 1IS-IS DIS Election on Broadcast Networks
Learn how IS-IS elects a Designated Intermediate System (DIS) on broadcast links. R3 wins due to having the highest interface priority.
IS-IS Supported Cost Types: Wide vs Narrow
Learn which cost types are supported in IS-IS routing protocol. The correct answers are Wide and Narrow metrics, essential for configuring scalable ne
IS-IS IIH Circuit Type Values for Level-1-2 Routers
In IS-IS networks, Level-1-2 routers send IIH packets with a Circuit Type value of 11. This distinguishes them from pure Level-1 (01) and Level-2 (10)
IS-IS Packet Structure Scalability: TLV vs OSPF Fixed Headers
Learn why IS-IS offers higher scalability than OSPF by using the TLV (Type-Length-Value) packet structure instead of fixed-format headers.
Comparing IS-IS and OSPF: Key Differences in Architecture and Scalability
This question examines the architectural differences between IS-IS and OSPF, focusing on scalability, OSI layer operation, and protocol support. The c
IS-IS Loopback Route Advertisement Analysis
This H12-821 question examines how IS-IS interface configuration affects route propagation, specifically why disabling IS-IS on a loopback prevents it