CCNA Tutorial 1.6 – Configure and Verify IPv4 Addressing and Subnetting

CCNA 1.6 – Configure and Verify IPv4 Addressing and Subnetting – Quiz

Multiple Choice (20 questions)

1. What is the default subnet mask for a Class C IPv4 network?
   • A) 255.0.0.0
   • B) 255.255.0.0
   • C) 255.255.255.0
   • D) 255.255.255.255
2. Which of the following is a private IPv4 address?
   • A) 8.8.8.8
   • B) 192.168.1.10
   • C) 203.0.113.5
   • D) 11.1.1.1
3. What command is used on a Cisco router to assign an IPv4 address to an interface?
   • A) ip address X.X.X.X Y.Y.Y.Y
   • B) ip route X.X.X.X Y.Y.Y.Y
   • C) ip host X.X.X.X Y.Y.Y.Y
   • D) assign ip X.X.X.X Y.Y.Y.Y
4. Which command verifies IPv4 connectivity to another host?
   • A) show ip interface brief
   • B) ping
   • C) show running-config
   • D) traceroute
5. Which address is NOT allowed for host assignment?
   • A) Network address
   • B) Broadcast address
   • C) First usable address
   • D) Last usable address
6. How many host addresses are available in a /29 subnet?
   • A) 2
   • B) 6
   • C) 8
   • D) 14
7. A /24 network provides how many usable host addresses?
   • A) 126
   • B) 254
   • C) 510
   • D) 1022
8. Which of these is a loopback address?
   • A) 127.0.0.1
   • B) 192.168.0.1
   • C) 10.0.0.1
   • D) 169.254.1.1
9. An IP of 169.254.x.x is typically:
   • A) Loopback address
   • B) Auto-configured when DHCP fails
   • C) Reserved multicast
   • D) Public IPv4
10. What does the /30 prefix length mean in dotted decimal subnet mask?

• A) 255.255.255.0
• B) 255.255.255.252
• C) 255.255.255.248
• D) 255.255.255.254

11. How many subnets are created if you borrow 3 bits from the host portion?

• A) 4
• B) 6
• C) 8
• D) 16

12. Which subnet mask allows exactly 62 usable hosts?

• A) /24
• B) /25
• C) /26
• D) /27

13. Which IPv4 address belongs to the subnet 172.16.32.0/20?

• A) 172.16.31.200
• B) 172.16.48.1
• C) 172.16.35.10
• D) 172.16.63.255

14. Which IPv4 address is a broadcast address for 192.168.1.0/24?

• A) 192.168.1.0
• B) 192.168.1.255
• C) 192.168.1.1
• D) 192.168.1.254

15. Which class of address is 10.0.0.0 by default?

• A) Class A
• B) Class B
• C) Class C
• D) Class D

16. What does the show ip interface brief command display?

• A) MAC address table
• B) Interface IPs, status, and protocol state
• C) Routing table
• D) Access control lists

17. Which subnet mask would give you 510 usable hosts?

• A) /23
• B) /24
• C) /25
• D) /26

18. Which two addresses cannot be assigned to hosts in a subnet?

• A) First and last usable
• B) Network and broadcast
• C) Loopback and multicast
• D) Private and public

19. Which IPv4 address is in the private Class B range?

• A) 192.168.5.10
• B) 172.20.1.1
• C) 10.1.1.1
• D) 224.0.0.5

20. Which tool provides step-by-step visibility into each router hop to a destination?

• A) ping
• B) traceroute
• C) arp
• D) nslookup

Fill in the Blank (5 questions)

21. The default gateway is the address of the __________ that connects the LAN to other networks.
22. A /27 subnet provides __________ usable host addresses.
23. The command __________ is used to assign an IPv4 address to a Cisco interface.
24. The reserved address range 127.0.0.0/8 is used for __________ testing.
25. The first address in a subnet is the __________ address.

CCNA 1.6 – Configure and Verify IPv4 Addressing and Subnetting – Answer Key

1. C) 255.255.255.0
2. B) 192.168.1.10
3. A) ip address X.X.X.X Y.Y.Y.Y
4. B) ping
5. A) Network address & B) Broadcast address (both not allowed)
6. B) 6
7. B) 254
8. A) 127.0.0.1
9. B) Auto-configured when DHCP fails
10. B) 255.255.255.252
11. C) 8
12. B) /26
13. C) 172.16.35.10
14. B) 192.168.1.255
15. A) Class A
16. B) Interface IPs, status, and protocol state
17. A) /23
18. B) Network and broadcast
19. B) 172.20.1.1
20. B) traceroute
21. Router
22. 30
23. ip address
24. Loopback
25. Network