3.7.11 Check Your Understanding – Data Access Answers

Home CCNA 3.7.11 Check Your Understanding – Data Access Answers

1. True or false? Frames exchanged between devices on different IP networks must be forwarded to a default gateway.

True ✅
False

Explanation: Devices on different IP networks cannot exchange frames directly. The sending device forwards the frame to its default gateway, which routes the packet toward the destination network.

2. True or false? The right-most part of an IP address identifies the network to which a device belongs.

True
False ✅

Explanation: The left-most portion identifies the network, while the right-most portion identifies the specific host or interface.

3. What is used to determine the network portion of an IPv4 address?

Subnet mask ✅
MAC address
Right-most part of the IP address
Left-most part of the MAC address

Explanation: The subnet mask determines which portion of an IPv4 address identifies the network and which portion identifies the host.

4. Which statements are true about network-layer and data-link-layer addresses? (Choose three.)

Data-link-layer addresses are logical, and network-layer addresses are physical.
Network-layer addresses are expressed as 12 hexadecimal digits, and data-link-layer addresses are decimal.
Network-layer addresses are logical, and data-link addresses are expressed as 12 hexadecimal digits. ✅
Data-link-layer addresses are physical, and network-layer addresses are logical. ✅
Network-layer addresses are either 32 or 128 bits in length. ✅
Data-link-layer addresses are 32 bits in length.

Explanation: MAC addresses are physical addresses that are 48 bits long and normally written as 12 hexadecimal digits. IPv4 and IPv6 addresses are logical addresses containing 32 and 128 bits, respectively.

5. What is the order of the two addresses in a data-link frame?

Source MAC, destination MAC
Destination MAC, source IP
Destination IP, source IP
Destination MAC, source MAC ✅
Source IP, destination IP

Explanation: A data-link frame contains the destination MAC address first, followed by the source MAC address.

6. True or false? Data-link addresses are physical, so they never change in the frame from source to destination.

True
False ✅

Explanation: When data travels between different networks, routers remove and replace the data-link frame at every hop. Therefore, the source and destination MAC addresses can change along the path.

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3.7.11 Check Your Understanding – Data Access Answers

1. True or false? Frames exchanged between devices on different IP networks must be forwarded to a default gateway.

2. True or false? The right-most part of an IP address identifies the network to which a device belongs.

3. What is used to determine the network portion of an IPv4 address?

4. Which statements are true about network-layer and data-link-layer addresses? (Choose three.)

5. What is the order of the two addresses in a data-link frame?

6. True or false? Data-link addresses are physical, so they never change in the frame from source to destination.

Ciscoexam Editorial Team

CCNA: Introduction to Networks

Module 1: Networking Today

1.2.6 Check Your Understanding – Network Components

1.3.3 Check Your Understanding – Network Representations and Topologies

1.4.5 Check Your Understanding – Common Types of Networks

1.6.6 Check Your Understanding – Reliable Networks

1.7.10 Check Your Understanding – Network Trends

1.8.3 Check Your Understanding – Network Security

1.10.2 Module Quiz – Networking Today (Answers)

Module 2: Basic Switch and End Device Configuration

2.1.6 Check Your Understanding – Cisco IOS Access Answers

2.2.8 Check Your Understanding – IOS Navigation Answers

2.4.8 Check Your Understanding – Basic Device Configuration Answers

2.6.3 Check Your Understanding – Ports and Addresses Answers

2.9.4 Module Quiz – Basic Switch and End Device Configuration Answers

Module 3: Protocols and Models

3.1.12 Check Your Understanding – The Rules Answers

3.2.4 Check Your Understanding – Protocols Answers

3.3.6 Check Your Understanding – Protocol Suites Answers

3.4.5 Check Your Understanding – Standards Organizations Answers

3.6.6 Check Your Understanding – Data Encapsulation Answers

3.7.11 Check Your Understanding – Data Access Answers

3.8.2 Module Quiz – Protocols and Models (Answers)

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3.7.11 Check Your Understanding – Data Access Answers

1. True or false? Frames exchanged between devices on different IP networks must be forwarded to a default gateway.

2. True or false? The right-most part of an IP address identifies the network to which a device belongs.

3. What is used to determine the network portion of an IPv4 address?

4. Which statements are true about network-layer and data-link-layer addresses? (Choose three.)

5. What is the order of the two addresses in a data-link frame?

6. True or false? Data-link addresses are physical, so they never change in the frame from source to destination.

Ciscoexam Editorial Team

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