Cisco Certified Network Associate (CCNA) v1.0
Question 1
What are two descriptions of three-tier network topologies? (Choose two.)
- A. The distribution layer runs Layer 2 and Layer 3 technologies
- B. The network core is designed to maintain continuous connectivity when devices fail
- C. The access layer manages routing between devices in different domains
- D. The core layer maintains wired connections for each host
- E. The core and distribution layers perform the same functions
Answer : AB
Question 2
Which type of IPv6 address is publicly routable in the same way as IPv4 public addresses?
- A. multicast
- B. unique local
- C. link-local
- D. global unicast
Answer : D
Question 3
What is the expected outcome when an EUI-64 address is generated?
- A. The interface ID is configured as a random 64-bit value
- B. The characters FE80 are inserted at the beginning of the MAC address of the interface
- C. The seventh bit of the original MAC address of the interface is inverted
- D. The MAC address of the interface is used as the interface ID without modification
Answer : C
Question 4
A corporate office uses four floors in a building.
✑ Floor 1 has 24 users.
✑ Floor 2 has 29 users.
Floor 3 has 28 users.
✑ Floor 4 has 22 users.
Which subnet summarizes and gives the most efficient distribution of IP addresses for the router configuration?
- A. 192.168.0.0/24 as summary and 192.168.0.0/28 for each floor
- B. 192.168.0.0/23 as summary and 192.168.0.0/25 for each floor
- C. 192.168.0.0/25 as summary and 192.168.0.0/27 for each floor
- D. 192.168.0.0/26 as summary and 192.168.0.0/29 for each floor
Answer : C
Question 5
Refer to the exhibit. An engineer must add a subnet for a new office that will add 20 users to the network. Which IPv4 network and subnet mask combination does the engineer assign to minimize wasting addresses?
- A. 10.10.225.48 255.255.255.240
- B. 10.10.225.32 255.255.255.240
- C. 10.10.225.48 255.255.255.224
- D. 10.10.225.32 255.255.255.224
Answer : D
Question 6
What is a characteristic of spine-and-leaf architecture?
- A. Each link between leaf switches allows for higher bandwidth.
- B. It provides greater predictability on STP blocked ports.
- C. It provides variable latency.
- D. Each device is separated by the same number of hops.
Answer : D
Question 7
An office has 8 floors with approximately 30-40 users per floor. One subnet must be used. Which command must be configured on the router Switched Virtual
Interface to use address space efficiently?
- A. ip address 192.168.0.0 255.255.0.0
- B. ip address 192.168.0.0 255.255.254.0
- C. ip address 192.168.0.0 255.255.255.128
- D. ip address 192.168.0.0 255.255.255.224
Answer : B
Question 8
DRAG DROP -
Drag and drop the descriptions of IP protocol transmissions from the left onto the IP traffic types on the right.
Select and Place:
Answer : 
Question 9
A device detects two stations transmitting frames at the same time. This condition occurs after the first 64 bytes of the frame is received. Which interface counter increments?
- A. runt
- B. collision
- C. late collision
- D. CRC
Answer : C
Question 10
Refer to the exhibit. Which outcome is expected when PC_A sends data to PC_B after their initial communication?
- A. The source MAC address is changed.
- B. The destination MAC address is replaced with ffff.ffff.ffff.
- C. The source and destination MAC addresses remain the same.
- D. The switch rewrites the source and destination MAC addresses with its own.
Answer : C
Question 11
Using direct sequence spread spectrum, which three 2.4-GHz channels are used to limit collisions?
- A. 5, 6, 7
- B. 1, 2, 3
- C. 1, 6, 11
- D. 1, 5, 10
Answer : C
Question 12
How do TCP and UDP differ in the way they guarantee packet delivery?
- A. TCP uses retransmissions, acknowledgment, and parity checks, and UDP uses cyclic redundancy checks only
- B. TCP uses two-dimensional parity checks, checksums, and cyclic redundancy checks, and UDP uses retransmissions only
- C. TCP uses checksum, acknowledgements, and retransmissions, and UDP uses checksums only
- D. TCP uses checksum, parity checks, and retransmissions, and UDP uses acknowledgements only
Answer : C
Question 13
A wireless administrator has configured a WLAN; however, the clients need access to a less congested 5-GHz network for their voice quality. Which action must be taken to meet the requirement?
- A. enable Band Select
- B. enable DTIM
- C. enable RX-SOP
- D. enable AAA override
Answer : A
Question 14
DRAG DROP -
Drag and drop the application protocols from the left onto the transport protocols that it uses on the right.
Select and Place:
Answer : 
Question 15
What is the destination MAC address of a broadcast frame?
- A. 00:00:0c:07:ac:01
- B. ff:ff:ff:ff:ff:ff
- C. 43:2e:08:00:00:0c
- D. 00:00:0c:43:2e:08
- E. 00:00:0c:ff:ff:ff
Answer : B