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HCIP-Datacom HCIP-Datacom-Advanced Routing & Switching Technology V1.0

HCIP-Datacom-Advanced Routing & Switching Technology V1.0

Last Update Apr 29, 2025
Total Questions : 156

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Questions 2

On the OSPF network shown in the figure, area 1 is an NSSA, area 2 is a stub area, and R4 imports an external route 10.0.4.4/32. The router ID of each router is 10.0.X.X, where X is the router number. The asbr-summary 10.0.4.0 255.255.255.0 command is configured in the OSPF processes of R1 and R3.

Match the following descriptions of routing tables with the corresponding routers:

Questions 2

Options:

Discussion 0

Answer:

Explanation:

Explanation 2

Comprehensive and Detailed In-Depth Explanation:

Key OSPF Concepts to Consider:

Area 1 is an NSSA (Not-So-Stubby Area):

NSSAs allow external routes but advertise them as Type-7 LSAs.

The ABR (R2) converts these Type-7 LSAs into Type-5 LSAs for the backbone (Area 0).

Area 2 is a Stub Area:

Stub areas do not allow external routes (Type-5 LSAs).

This means that R5 (inside Area 2) will NOT receive external routes like 10.0.4.4/32 or 10.0.4.0/24.

Effect of asbr-summary 10.0.4.0 255.255.255.0 on R1 and R3:

This command ensures that R1 and R3 will see a summarized route 10.0.4.0/24 instead of specific /32 routes.

Routing Table Analysis:

R1 (ABR for NSSA, with ASBR summary configured)

Connected to Area 1 (NSSA) and Area 0 (Backbone)

Since asbr-summary 10.0.4.0 255.255.255.0 is configured on R1, it contains both 10.0.4.4/32 (from R4) and the summarized 10.0.4.0/24.

✅ Matches Option 4: The routing table contains both 10.0.4.4/32 and 10.0.4.0/24.

R5 (Inside Area 2 - Stub Area)

Stub areas do not receive external routes (Type-5 LSAs).

Since R5 is inside a stub area, it does not contain 10.0.4.4/32 or 10.0.4.0/24.

✅ Matches Option 3: The routing table does not contain 10.0.4.4/32 or 10.0.4.0/24.

R2 (ABR between NSSA and Backbone, but no ASBR summary configured)

R2 converts Type-7 LSAs from R4 into Type-5 LSAs and advertises them into Area 0.

Since no ASBR summary is configured on R2, it only sees the specific external route 10.0.4.4/32 but not the summarized 10.0.4.0/24.

✅ Matches Option 1: The routing table contains 10.0.4.4/32 only.

R3 (Another ABR with ASBR summary configured)

R3 has asbr-summary 10.0.4.0 255.255.255.0 configured, which means it will summarize the external routes.

Instead of 10.0.4.4/32, R3 will only have the summarized 10.0.4.0/24 route.

✅ Matches Option 2: The routing table contains 10.0.4.0/24 only.

References:

HCIP-Datacom-Advanced Routing & Switching Technology V1.0 – OSPF Areas (Stub, NSSA, and Backbone)

OSPF External Route Advertisement and Summarization

OSPF NSSA Behavior and Type-7 to Type-5 Conversion

Questions 3

A network engineer enters dir on the device to obtain the following file names. Which is most likely to be the version file of the device?

Options:

V300R022C00SPC100.cc

startup_vl.rdb

Ca.cer

V300R022C00SPC100.cfg

Discussion 0

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Questions 4

On the network shown in the figure, single-hop BFD is configured on R1 and R2.

A network engineer finds that the BFD session goes down. To locate the fault, the network engineer queries the BFD configurations on R1 and R2.

According to the configuration information marked in the figure, it can be determined that mismatched time parameter settings on R1 and R2 cause the BFD session to go down.

Questions 4

Is this statement TRUE or FALSE?

Options:

TRUE

FALSE

Discussion 0

Questions 5

The path that IP packets pass through on an MPLS network is called a label switched path (LSP). An LSP is a bidirectional path that specifies the transmission direction of data flows.

Options:

TRUE

FALSE

Discussion 0

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