CCNA IP Routing Practice Test 2 — 15 Questions

Question 1

What is the main purpose of a floating static route in a network that already uses dynamic routing?

Accepted Answer

It acts as a backup path that becomes active if the preferred dynamic route is lost.. A floating static route provides a standby backup path without replacing the preferred dynamic route during normal operation. In plain language, it sits in reserve because its administrative distance is set higher than the primary route source. If the dynamic route disappears, the floating static route can take over automatically.

This is valuable because it adds simple backup behavior without forcing the administrator to abandon the dynamic design. The correct answer is the one focused on backup failover rather than immediate preference.

Answer

It always overrides the dynamic route because static routes are preferred by definition.

Answer

It removes the need for administrative distance.

Answer

It converts dynamic routes into connected routes.

Question 2

What is the main reason administrators use floating static routes in networks that already run dynamic routing protocols?

Accepted Answer

To provide a backup route that takes over if the preferred dynamic route is lost.. Administrators use floating static routes to provide simple backup paths without replacing the preferred dynamic routes during normal operation. In plain language, the static route is intentionally given a higher administrative distance so it stays inactive until the better route disappears. That makes failover possible without changing the normal routing design.

This is a very practical design technique. The correct answer is the one centered on backup behavior rather than on immediate preference.

Answer

To force static routing to override the dynamic protocol all the time.

Answer

To eliminate the need for routing metrics entirely.

Answer

To convert default routes into connected routes.

Question 3

What is the main value of route summarization at a distribution layer or area boundary?

Accepted Answer

It reduces the number of individual routes that must be advertised or stored.. Route summarization reduces the number of specific prefixes that need to be advertised or carried. In practical terms, instead of sending many small route entries, the network can often advertise one broader summary that represents them. That helps control routing-table growth and simplifies the control plane, especially at aggregation points.

Summarization does not eliminate the need for detail everywhere, but it is an important scaling technique. The strongest answer is the one focused on route reduction and manageability.

Answer

It forces every subnet to use only a default route.

Answer

It automatically encrypts route updates.

Answer

It removes the need for subnet masks.

Question 4

What is the main operational benefit of summarizing multiple routes into one broader prefix where appropriate?

Accepted Answer

It reduces the number of specific routes that must be carried or advertised.. The main benefit is that it reduces the number of route entries that must be advertised and stored. In practical terms, one broader summary can stand in for many smaller prefixes. That simplifies the routing table and can improve scalability, especially at aggregation points.

Summarization does not eliminate all specific routing everywhere, but it helps keep the control plane cleaner. That is why it is widely used at distribution layers and routing boundaries.

Answer

It guarantees every packet uses only the default route.

Answer

It automatically encrypts route updates.

Answer

It removes the need for subnet masks.

Question 5

What is the main reason a default route is useful on a small branch router with a single upstream connection?

Accepted Answer

It provides a simple next hop for unknown destinations toward the upstream connection.. A default route is useful because it gives the branch a simple fallback path for any destination the router does not know specifically. In practical terms, the branch does not need to learn every possible remote prefix if all unknown traffic should simply be sent to the one upstream router or ISP connection.

This is why default routes are common in small sites and edge designs. They simplify the routing table while still allowing off-site communication.

Answer

It makes every route more specific.

Answer

It removes the need for addressing on the router.

Answer

It forces all hosts into one VLAN.

Question 6

What is the main operational purpose of a floating static route in a network that already uses dynamic routing?

Accepted Answer

It provides a standby route that becomes active if the preferred dynamic route disappears.. A floating static route provides a backup path that stays inactive until the preferred dynamic route is lost. In practical terms, the administrator assigns it a higher administrative distance so it remains in reserve during normal operation. If the dynamic source fails, the static route can take over automatically.

This is a practical failover technique because it adds resilience without replacing the primary routing design.

Answer

It always overrides the dynamic route because static routes are preferred by default.

Answer

It removes the need for administrative distance in route selection.

Answer

It turns all learned routes into connected routes.

Question 7

What is the main operational benefit of route summarization at aggregation points in a larger network?

Accepted Answer

It reduces the number of specific routes that must be stored and advertised.. The main benefit is that it reduces the number of individual routes that must be carried and advertised. In practical terms, one broader summary can represent many smaller networks. That helps control routing-table size, reduces update complexity, and improves scalability at key boundaries such as distribution layers or area edges.

Summarization does not replace all specific routes everywhere, but it is an important tool for keeping the control plane manageable.

Answer

It forces all traffic to use only the default route.

Answer

It automatically encrypts routing updates.

Answer

It removes the need for subnet masks.

Question 8

What is the main operational benefit of route summarization where appropriate?

Accepted Answer

It reduces the number of specific routes that must be carried or advertised.. The main benefit is that it reduces the number of individual routes that need to be advertised and stored. In practical terms, one broader prefix can represent multiple smaller subnets. That helps control routing-table growth and simplifies route distribution at aggregation points.

Summarization does not eliminate all detailed routing everywhere, but it is an important scalability tool in larger designs.

Answer

It guarantees every destination uses only the default route.

Answer

It automatically encrypts routing updates.

Answer

It removes the need for subnet masks.

Question 9

What is the main operational reason a floating static route is assigned a higher administrative distance than the preferred route source?

Accepted Answer

So it remains a standby route and activates only if the preferred route is lost.. The higher administrative distance makes the static route stay inactive until the preferred source disappears. In practical terms, the administrator wants a backup path, not a competing primary path. By raising the static route’s distance, it remains in reserve and takes over only if the better route is lost.

This is the essence of a floating static design. The static route is present, but it is intentionally not the first choice under normal conditions.

Answer

So it will always override the preferred route immediately.

Answer

So the router can remove the default route automatically.

Answer

So the route becomes more specific than the primary route.

Question 10

Which statement best explains why BGP is discussed separately from interior routing protocols such as OSPF at a basic level?

Accepted Answer

Because BGP is associated with routing between autonomous systems, while OSPF is an interior routing protocol.. BGP is discussed separately because it is associated with routing between autonomous systems rather than only within one internal routing domain. In practical terms, the conceptual scope and role are different. OSPF is usually framed as an interior routing protocol, while BGP is the classic interdomain or external-routing example.

This is a scope and architecture distinction more than a syntax distinction.

Answer

Because BGP is a wireless security protocol and OSPF is not.

Answer

Because OSPF can be used only on serial links.

Answer

Because BGP replaces the need for IP addressing.

Question 11

Which statement best describes PPPoE at a basic CCNA level?

Accepted Answer

It provides PPP-style session behavior over an Ethernet access environment.. PPPoE combines point-to-point style session behavior with Ethernet-based access environments. In practical terms, it is commonly associated with broadband-style access where a provider wants PPP-style features over an Ethernet infrastructure. The important idea is that it is not just plain Ethernet and not just traditional serial PPP in isolation.

At CCNA level, the goal is to recognize the use case and architecture, not deep provider implementation detail.

Answer

It is the wireless security standard that replaced WPA2.

Answer

It is the same thing as a GRE tunnel.

Answer

It is an STP optimization for Metro Ethernet switching.

Question 12

Which statement best describes BGP at a basic CCNA level?

Accepted Answer

It is a path-vector routing protocol commonly associated with routing between autonomous systems.. At the CCNA level, BGP (Border Gateway Protocol) is best described as a path-vector routing protocol used to exchange routing information between different autonomous systems. This distinguishes it from interior gateway protocols (IGPs) like OSPF and EIGRP that operate within a single AS. Option B (spanning-tree protocol) is incorrect because STP is a layer 2 protocol for loop prevention in Ethernet networks. Option C (WLAN security standard) is incorrect because WLAN security uses standards like WPA2/3, not BGP. Option D (replacement for ARP) is incorrect because ARP resolves IP to MAC addresses in IPv4, a function unrelated to BGP. Therefore, only option A correctly describes BGP's role.

Answer

It is the default spanning-tree protocol for switches.

Answer

It is a WLAN security standard.

Answer

It is a replacement for ARP in IPv4.

Question 13

What is the main difference between administrative distance and metric in route selection?

Accepted Answer

Administrative distance compares trust between route sources, while metric compares paths within a route source or protocol.. Administrative distance compares the trustworthiness of different route sources, while metric compares candidate paths within a route source or protocol. In practical terms, if two routes to the same prefix come from different protocols, administrative distance often decides first. If the routes come from the same protocol, the metric is usually the more relevant comparison.

This distinction is one of the most important in route-selection questions because learners often mix them up.

Answer

Administrative distance is used only for wireless routing and metric only for wired routing.

Answer

Metric always overrides prefix length.

Answer

Administrative distance is the same as subnet mask length.

Question 14

Which statement best describes why a static route can still be useful even in networks that also run dynamic routing protocols?

Accepted Answer

Because static routes can provide deliberate manual control for specific paths or special cases.. A static route can still be useful because some destinations or behaviors are simple enough that an administrator may want precise manual control. In practical terms, static routes are often used for specific paths, edge routes, backups, or special cases even when dynamic protocols handle most of the network. Dynamic routing and static routing are not mutually exclusive.

This is a practical design question rather than an all-or-nothing routing question.

Answer

Because dynamic routing protocols are illegal on enterprise routers.

Answer

Because static routes automatically replace all dynamic routes.

Answer

Because static routes eliminate the need for interface addressing.

Question 15

Which statement best describes why GRE is often mentioned together with VPN discussions but is not itself the same as encryption?

Accepted Answer

GRE provides tunneling, but confidentiality requires an additional security mechanism.. GRE is often mentioned in VPN discussions because it provides tunneling, but tunneling and encryption are not the same thing. In practical terms, GRE can encapsulate traffic across another network path, but by itself it does not provide confidentiality. Encryption must come from an additional security mechanism if confidentiality is required.

This is a classic distinction between transport structure and transport protection.

Answer

GRE is already the same thing as WPA3 encryption.

Answer

GRE replaces the need for default routes.

Answer

GRE is used only on switch access ports.