01
Written response
1 point
What term describes a group of networks under a common administrative organization? Enter the term.
Free Practice Quiz Question List
4 Routing and Internetworking Online Quiz Questions
Use this free practice quiz with 20 questions to review 4 Routing and Internetworking, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
A packet crosses three routers. After receiving it, each router independently consults its forwarding information to choose the next outgoing interface.
- A
True
- B
False
03
Fill in the blank
1 point
A route is entered manually and will not automatically learn a replacement path. This is a .
04
Choose one
1 point
A router has routes for 10.0.0.0/8 and 10.2.0.0/16. Which route does longest-prefix match select for a packet addressed to 10.2.4.7?
- A
10.2.0.0/16
- B
10.0.0.0/8
- C
0.0.0.0/0
- D
Neither route; the packet must be dropped
05
Fill in the blank
1 point
In link-state routing, each router builds a and calculates shortest paths from itself.
06
Written response
1 point
What is the largest usable hop metric in RIP? Enter the integer metric value.
07
True or false
1 point
A route has a lower metric than another route. This alone does not guarantee that its path will be faster in real-world conditions.
- A
True
- B
False
08
Choose one
1 point
A router has selected forwarding entries ready to use for packet lookups. In which structure are those entries installed?
- A
Routing Information Base (RIB)
- B
Forwarding Information Base (FIB)
- C
Autonomous System (AS)
- D
Interior Gateway Protocol (IGP)
09
Choose all
1 point
Which statements correctly describe distance-vector and link-state routing? Select all correct choices.
- A
Distance-vector routers share route distances and next-hop information with neighbors.
- B
Link-state routers distribute information about local links and calculate shortest paths from a topology database.
- C
Distance-vector routers must build a complete network topology database before choosing routes.
- D
Link-state routers select routes only by counting the physical links in a path.
10
Choose all
1 point
Which practices help secure routing information? Select all correct choices.
- A
Accept routing updates only from expected neighbors.
- B
Filter invalid or unauthorized prefixes.
- C
Apply explicit policies to routes exchanged with other networks.
- D
Rely on authentication alone instead of filtering routes or applying policy.
11
Choose one
1 point
Which IPv4 route is the least-specific default route that can be used when no more-specific route matches?
- A
0.0.0.0/0
- B
0.0.0.0/8
- C
255.255.255.255/32
- D
10.0.0.0/8
12
Choose one
1 point
A router has two candidate routes with the same destination prefix. What does it generally do to select between them?
- A
Always choose the route learned first.
- B
Always choose the route with the largest metric.
- C
Apply selection rules and policy, which may consider the route source or metric.
- D
Choose randomly because routes with identical prefixes cannot be compared.
13
Open ended
1 point
After a network link changes, routers update and recalculate routes. Explain what convergence means and describe one problem that can occur before convergence is complete.
14
Choose one
1 point
Two candidate routes have different metrics. Which conclusion about the route with the lower metric is justified?
- A
A lower metric always means the route has less delay in real-world conditions.
- B
A lower metric may indicate lower protocol-defined cost, but does not guarantee a faster real-world path.
- C
A metric is the number of routers a packet must cross in every routing protocol.
- D
A metric determines which link-layer address the router uses.
15
Choose one
1 point
A router has routes for 10.0.0.0/8 and 10.2.0.0/16. A packet is addressed to 10.2.4.7. Assuming both routes are available, which route does longest-prefix match select?
- A
Use 10.0.0.0/8 because a shorter prefix is preferred.
- B
Use the route with the lower metric, even if its prefix is less specific.
- C
Use 10.2.0.0/16 because it is the most specific matching prefix.
- D
Use the default route because both listed routes match.
16
Choose one
1 point
A packet is traveling through several routers toward a server on another network. Which statement best describes the roles of its destination IP address and the link-layer address used for the current transmission?
- A
The destination IP address guides the packet toward its destination; the link-layer address is relevant to delivery on the current local link.
- B
The link-layer address guides the packet across all networks; the destination IP address changes at each router.
- C
Both addresses are used only to identify the final server, not to forward the packet.
- D
The destination IP address is replaced by a new destination at every router.
17
Choose one
1 point
An organization is considering RIP for a network that may require routes with many hops. Which limitation should it account for?
- A
RIP is intended for large networks because it supports an unlimited hop count.
- B
RIP chooses routes based on link-state topology databases.
- C
RIP uses BGP path attributes to select routes between autonomous systems.
- D
RIP's hop-based metric limits its usefulness to relatively small networks.
18
True or false
1 point
During routing convergence after a network change, different routers may temporarily have inconsistent route information, which can contribute to packet loss or loops.
- A
True
- B
False
19
Written response
1 point
In RIP, a metric of 16 means unreachable. What is the largest usable hop-count metric? Enter the integer.
20
Written response
1 point
What is the full name of the base that holds selected forwarding entries for packet lookups?