CompTIA A+ Certification Exam 220-1101 Practice Test 8

Question 1 of 25

1. Question

What is the purpose of the subnet mask in an IP address configuration?

Assigning a unique identifier to a device
Defining the range of host addresses within a network
Identifying the network portion of an IP address
Encrypting data transmission

Question 2 of 25

2. Question

In a Class C IP address, how many bits are reserved for the network portion?

8 bits
16 bits
24 bits
32 bits

Question 3 of 25

3. Question

Which of the following IP addresses is a valid IPv4 loopback address?

127.0.0.1
192.168.300.1
10.0.0.254
172.16.16.1

Question 4 of 25

4. Question

In IPv6, how many bits are used for the host portion of an address?

32 bits
64 bits
128 bits
256 bits

Question 5 of 25

5. Question

What is the purpose of DHCP (Dynamic Host Configuration Protocol) in IP networking?

Assigning static IP addresses to devices
Automatically configuring IP addresses on devices dynamically
Encrypting data transmission
Establishing secure connections

Question 6 of 25

6. Question

Which of the following IPv4 addresses is a private address commonly used in home networks?

192.168.1.1
203.100.50.1
172.16.32.1
10.1.1.1

Question 7 of 25

7. Question

What is the purpose of the DNS (Domain Name System) in IP networking?

Assigning IP addresses dynamically
Resolving domain names to IP addresses
Managing network devices
Establishing secure connections

Question 8 of 25

8. Question

In a subnetting scenario, what does a subnet mask of 255.255.255.192 represent in CIDR notation?

/24
/26
/28
/30

Question 9 of 25

9. Question

What is the purpose of NAT (Network Address Translation) in IP networking?

Assigning private IP addresses to devices
Translating private IP addresses to public IP addresses
Managing DNS resolution
Establishing secure connections

Question 10 of 25

10. Question

Which of the following IPv6 addresses is a link-local address?

FE80::1
2001:DB8::1
FD00::1
192.168.1.1

Question 11 of 25

11. Question

In a Class A IPv4 address, how many bits are reserved for the network portion?

8 bits
16 bits
24 bits
32 bits

Question 12 of 25

12. Question

What is the purpose of ARP (Address Resolution Protocol) in IP networking?

Assigning IP addresses dynamically
Resolving MAC addresses to IP addresses
Managing network devices
Establishing secure connections

Question 13 of 25

13. Question

Which of the following is a valid IPv6 loopback address?

::1
127.0.0.1
FE80::1
192.168.1.1

Question 14 of 25

14. Question

What is the default subnet mask for a Class B IPv4 address?

255.255.0.0
255.255.255.0
255.0.0.0
255.255.255.255

Question 15 of 25

15. Question

In a subnetting scenario, what is the maximum number of subnets created by using a subnet mask of 255.255.255.224 (CIDR /27)?

2
4
8
16

Question 16 of 25

16. Question

What is the purpose of ICMP (Internet Control Message Protocol) in IP networking?

Assigning IP addresses dynamically
Resolving MAC addresses to IP addresses
Managing network devices
Handling error messages and network diagnostics

Question 17 of 25

17. Question

In a subnetting scenario, what is the maximum number of host addresses per subnet with a subnet mask of 255.255.255.192 (CIDR /26)?

62
5
32
254

Question 18 of 25

18. Question

Which of the following is a reserved IPv6 address commonly used for multicast?

2001:DB8::1
FF02::1
FEC0::1
::1

Question 19 of 25

19. Question

What is the purpose of the DHCPACK message in the DHCP process?

Requesting an IP address
Offering an IP address to the client
Confirming the successful lease of an IP address
Nominating a DHCP server as authoritative

Question 20 of 25

20. Question

In a subnetting scenario, what is the broadcast address for the subnet 192.168.1.32/27?

192.168.1.32
192.168.1.31
192.168.1.63
192.168.1.95

Question 21 of 25

21. Question

What is the purpose of the APIPA (Automatic Private IP Addressing) feature in IP networking?

Assigning static IP addresses to devices
Dynamically configuring IP addresses when a DHCP server is unavailable
Managing network devices
Establishing secure connections

Question 22 of 25

22. Question

In a subnetting scenario, what is the subnet ID for the IP address 192.168.1.45 with a subnet mask of 255.255.255.240 (CIDR /28)?

192.168.1.32
192.168.1.16
192.168.1.48
192.168.1.0

Question 23 of 25

23. Question

What is the purpose of the 169.254.0.0/16 address range in IPv4?

Reserved for loopback testing
Reserved for private networks
Reserved for link-local addressing in the absence of DHCP
Reserved for multicast communication

Question 24 of 25

24. Question

In a Class B IPv4 address, how many host bits are available for addressing devices?

8 bits
16 bits
24 bits
32 bits

Question 25 of 25

25. Question

What is the purpose of the command “ipconfig /release” in Windows command prompt?

Renewing the IP address lease
Displaying detailed IP configuration information
Releasing the current IP address
Resetting the TCP/IP stack