hardMultiple Select
350-401 Practice Question: Which three statements about EIGRP named mode…
Which three statements about EIGRP named mode configuration are true? (Choose three.)
⚠ Common exam trap
Many exam-takers confuse classic-mode EIGRP syntax (network statements, no shutdown) with named-mode hierarchy, causing candidates to reject the address-family and dual-stack statements that are actually unique to named mode.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Named mode uses the 'router eigrp <name>' command to enter configuration mode.
Option A is correct because EIGRP named mode is entered with the global command 'router eigrp <name>', where <name> is a virtual instance name rather than an AS number, distinguishing it from classic mode's 'router eigrp <AS-number>'. Option C is correct because a single named EIGRP process can contain multiple address families, allowing IPv4 and IPv6 to be configured together under one process using 'address-family ipv4' and 'address-family ipv6' submode commands. Option D is correct because after entering 'router eigrp <name>', you use the 'address-family ipv4' (or 'address-family ipv6') command to enter the address-family configuration submode where EIGRP parameters are set. Option B is not correct because named mode still uses the 'network' statement under the address family to enable EIGRP on interfaces; the 'af-interface' submode is used for per-interface settings such as authentication, hello intervals, and split-horizon, not as a replacement for 'network'. Option E is not correct because EIGRP named mode does not require a 'no shutdown' command under the address family; the process and address family are enabled by configuration and the 'shutdown' command is only used to administratively disable them if desired.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Named mode uses the 'router eigrp <name>' command to enter configuration mode.
Why this is correct
Named mode is entered globally with router eigrp followed by an arbitrary process name, replacing the classic autonomous-system-number syntax. This single named process then hosts one or more address families, which is the structural change that defines EIGRP named mode configuration.
- ✗
In named mode, the network statement is replaced by the 'af-interface' configuration under the address family.
Why it's wrong here
Named mode still uses network statements inside the address family to advertise interfaces; af-interface configures per-interface settings such as passive mode or hello intervals. The tempting confusion arises because af-interface looks like interface-level advertisement, but it never replaces the network command.
- ✓
Named mode supports both IPv4 and IPv6 address families within the same EIGRP process.
Why this is correct
A single named EIGRP process contains separate address-family blocks, so IPv4 and IPv6 routing instances coexist under one process name. This consolidation is the principal advantage of named mode over classic configuration, where each address family required its own separate process.
- ✓
The 'address-family ipv4' command is used to enter IPv4 configuration under named mode.
Why this is correct
Within a named EIGRP process, the address-family ipv4 command enters the IPv4-specific configuration submode, where network statements, authentication and other parameters are applied. This address-family structure is what allows one named process to hold distinct IPv4 and IPv6 configurations.
- ✗
Named mode requires the 'no shutdown' command under the address family to enable EIGRP.
Why it's wrong here
EIGRP named mode activates automatically once the address family and interfaces are configured; no shutdown is not required, unlike classic mode's router eigrp process. It is tempting because interface-level shutdown exists elsewhere, but it does not gate EIGRP process enablement here.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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