CiscoProfessional level300-440Page 2 of 3

300-440 exam dumps: questions 101 to 200 of 292

Page 2 of the free 300-440 question bank for the Designing and Implementing Cloud Connectivity exam. Questions 101 to 200 are listed below, the first 5 in full with answers and explanations. Back to page 1 for the exam overview and FAQ.

Question bank last updated February 2025

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Free 300-440 practice questions

Questions 101 to 105 of 292

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300-440 Question 101

Single answer

A network engineer is configuring an OSPF network for a company. The network consists of multiple routers connected via Frame Relay. The engineer wants to avoid unnecessary OSPF traffic, such as multicast updates, since the Frame Relay network does not support broadcast. Which OSPF network type should the engineer configure on the Frame Relay interfaces?

A
Point-to-point
B
Broadcast
C
Nonbroadcast
D
Point-to-multipoint

Show answer and explanation

Correct answer: C

Explanation

When configuring OSPF on a Frame Relay network that does not support broadcasting, the 'Nonbroadcast' OSPF network type is the most appropriate. This mode avoids multicast updates and requires manual neighbor configuration, which is ideal in this scenario. Other options either do not align with the characteristics of a Frame Relay network or do not meet the objective of minimizing OSPF traffic.

A. Incorrect.
Point-to-point is used for direct connections between two routers. While it minimizes OSPF traffic, it is not suitable for a Frame Relay network with multiple connections.
B. Incorrect.
Broadcast is used when the underlying network supports broadcasting, such as Ethernet. Frame Relay does not inherently support broadcast, making this option unsuitable.
C. Correct.
Nonbroadcast is appropriate for networks like Frame Relay where broadcasting is not supported. In this mode, OSPF requires manual neighbor configuration, which avoids multicast traffic.
D. Incorrect.
Point-to-multipoint is used for scenarios where the network supports multiple destinations, but it still allows multicast traffic. This does not align with the goal of avoiding multicast traffic in the given scenario.

300-440 Question 102

Select 3

A network engineer is configuring OSPF in a network with multiple Frame Relay links. Some links are point-to-point, while others are multipoint. The engineer needs to ensure OSPF forms adjacencies correctly and that LSAs are exchanged efficiently. Which OSPF network types should the engineer configure on these Frame Relay links to achieve the desired behavior?

A
Point-to-Point
B
Broadcast
C
Non-Broadcast
D
Point-to-Multipoint

Show answer and explanation

Correct answers: A, C, D

Explanation

When configuring OSPF over Frame Relay, the network type must match the topology of the link. Point-to-Point is used for individual subinterfaces, while Non-Broadcast and Point-to-Multipoint are used for multipoint configurations depending on whether manual neighbor configuration is desired. Broadcast is not typically used for Frame Relay.

A. Correct.
Point-to-Point is appropriate for Frame Relay links configured as point-to-point subinterfaces, as it allows OSPF to form adjacencies directly between two devices without the need for DR/BDR elections.
B. Incorrect.
Broadcast is generally used for Ethernet networks or similar media where all devices can communicate directly, but it is not suitable for Frame Relay unless explicitly emulated, which is rare.
C. Correct.
Non-Broadcast is suitable for Frame Relay networks that do not support broadcast capabilities. OSPF in this mode requires manual neighbor configuration but can handle multiple devices on the same link.
D. Correct.
Point-to-Multipoint is appropriate for Frame Relay networks with multiple endpoints where broadcast capability is not available. It is simpler to configure than Non-Broadcast and does not require manual neighbor configuration.

300-440 Question 103

Single answer

A network engineer is configuring OSPF over a Frame Relay network. The network consists of one hub router and three spoke routers. The engineer wants to minimize the number of OSPF adjacencies and avoid any additional overhead by simulating a broadcast network type. Which OSPF network type should the engineer configure on the hub and spoke routers to achieve this?

A
Point-to-Point
B
Broadcast
C
Nonbroadcast
D
Point-to-Multipoint

Show answer and explanation

Correct answer: C

Explanation

Nonbroadcast is the correct choice because it is designed for environments like Frame Relay where multiple routers share a single physical or logical network. It requires manual neighbor configuration but minimizes OSPF adjacencies and overhead, making it ideal for the described hub-and-spoke topology.

A. Incorrect.
Point-to-Point is typically used for direct links between two routers, but it does not support multiple routers on a single network segment, which is required for this Frame Relay topology.
B. Incorrect.
Broadcast simulates Ethernet-like behavior and supports automatic neighbor discovery, but it is not natively supported on Frame Relay networks and would require manual configuration.
C. Correct.
Nonbroadcast is suitable for Frame Relay networks as it supports multiple routers on a single segment and requires manual neighbor configuration, which minimizes overhead while simulating a broadcast network.
D. Incorrect.
Point-to-Multipoint treats each connection as a separate point-to-point link, which increases the number of OSPF adjacencies and does not minimize overhead in this scenario.

300-440 Question 104

Single answer

A network engineer is configuring OSPF on a network that includes both point-to-point and nonbroadcast multi-access (NBMA) links. The engineer needs to ensure that OSPF adjacency is established correctly on all links. Which OSPF network type configuration is required on the NBMA link to allow the routers to form adjacencies without manual neighbor configuration?

A
Broadcast
B
Point-to-point
C
Nonbroadcast
D
Point-to-multipoint

Show answer and explanation

Correct answer: A

Explanation

In OSPF, NBMA links do not inherently support multicast or broadcast communication, which complicates neighbor discovery. Configuring the OSPF network type as 'Point-to-multipoint' on an NBMA network allows the routers to automatically discover and form adjacencies with neighbors without requiring manual configuration. This simplifies network management and ensures OSPF operates correctly. The other options either require manual neighbor configuration or are not designed for NBMA environments.

A. Correct.
Broadcast is used in environments like Ethernet where multicast and broadcast traffic is inherently supported. However, NBMA environments do not support broadcast or multicast by default, so this would not work without additional configuration.
B. Incorrect.
Point-to-point is not suitable for NBMA links because NBMA typically connects multiple routers. Point-to-point is designed for direct, one-to-one connections.
C. Incorrect.
Nonbroadcast is commonly used on NBMA links, but it requires manual neighbor configuration because routers do not automatically discover neighbors. This does not meet the requirement in the question.
D. Incorrect.
Point-to-multipoint is a suitable OSPF network type for NBMA environments, as it allows routers to form adjacencies without manual neighbor configuration. It treats the network as a series of point-to-point links, enabling automatic neighbor discovery.

300-440 Question 105

Single answer

A company is designing its OSPF network topology to optimize performance and minimize routing overhead. The OSPF Area 0 (backbone) connects to multiple normal areas as well as one area that has limited resources and does not require external routes. The company decides to configure this resource-constrained area as a special area type to reduce the size of its routing table. Which OSPF area type should the company use?

A
Stub Area
B
Totally Stubby Area
C
Not-So-Stubby Area (NSSA)
D
Transit Area

Show answer and explanation

Correct answer: B

Explanation

A Totally Stubby Area is the best choice for a resource-constrained area that does not require external routes. By blocking both inter-area (Type-3 LSAs) and external routes (Type-5 LSAs), it minimizes the routing table size and reduces the processing overhead on routers within the area. This makes it ideal for areas with limited resources.

A. Incorrect.
Stub areas block external routes (Type-5 LSAs) but still allow inter-area routes (Type-3 LSAs). While this reduces routing table size, it does not minimize it as much as a Totally Stubby Area.
B. Correct.
Totally Stubby Areas block both external (Type-5 LSAs) and inter-area routes (Type-3 LSAs), significantly reducing the routing table size. This is the most suitable choice for a resource-constrained area that does not need external routes.
C. Incorrect.
Not-So-Stubby Areas (NSSA) are used to import external routes into an area while still limiting external routes from other areas. This is not applicable in this scenario since the area does not need external routes.
D. Incorrect.
A Transit Area is used to interconnect other OSPF areas, typically in a hub-and-spoke topology. It is not used to reduce routing table size.

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300-440 practice questions 101 to 200 of 292

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