4A0-100 practice examsIn development
Nokia Network Routing Specialist I
The associate foundation for Nokia service routers on SR OS: the OSI and TCP/IP models, Ethernet and VLANs, IP addressing and subnetting, the SR OS context hierarchy, and routing by longest prefix match; then dynamic routing with distance-vector and link-state families and OSPF areas and adjacencies on SR OS, the first concepts of provider Ethernet services and VPLS as overlays sold over a shared network, and quality-of-service basics of classifying and scheduling so service agreements hold under congestion — the base the professional NRS II builds MPLS and services on.
What you get
Papers are cut from the bank and weighted like the real exam, and no question appears in two of them. Every wrong answer comes back on later days until you have it right.
What the exam covers
| Networking fundamentals and SR OS | Not published |
| Dynamic routing, Ethernet services and QoS basics | Not published |
Two sample questions
1. What does a subnet mask of 255.255.255.0 correspond to?
- A /16 prefix
- A /28 prefix
- A /30 prefix
- A /24 prefix — correct
Why: Twenty-four network bits leaves eight for hosts, which is two hundred and fifty-four usable.
2. What does the TCP/IP model consolidate?
- Fewer OSI layers — correct
- MAC addresses into one
- VLANs into a domain
- Routes into one default
Why: The TCP/IP model groups the OSI functions into fewer practical layers.
The real 4A0-100 exam
| Length | 90 minutes |
|---|---|
| Questions | Around 60 |
| Pass mark | Scaled; Nokia does not publish the percentage |
| Price | Set by Nokia; often taken through the Nokia SRA programme |
| Recommended before you sit it | None enforced. General networking familiarity is assumed. |
| Valid for | Aligned to the Nokia certification programme |
Exam facts as published by Nokia; always check the vendor’s page before you book.
Study 4A0-100 with Chiron
Chiron is invitation-only while we are in beta, and nothing is for sale yet: invited accounts use every paper, drill and course note for free.