Network protocols

Question 1

What does DNS stand for?

Answer 1

Domain Name System

Question 2

True or False: DHCP is used to assign static IP addresses.

Answer 2

False

Question 3

Fill in the blank: A _______ is a server that translates domain names into IP addresses.

Answer 3

DNS server

Question 4

What does DHCP stand for?

Answer 4

Dynamic Host Configuration Protocol

Question 5

What is the primary purpose of DHCP?

Answer 5

To automatically assign IP addresses to devices on a network.

Question 6

What command is used to display DNS records on Windows?

Answer 6

nslookup

Question 7

True or False: ADB stands for Android Debug Bridge.

Answer 7

True

Question 8

What is the main function of ADB?

Answer 8

To facilitate communication between a computer and an Android device.

Question 9

What command can be used to restart the DHCP service on a Linux server?

Answer 9

sudo systemctl restart isc-dhcp-server

Question 10

Multiple Choice: Which of the following is a common DNS troubleshooting tool? A) ping B) ipconfig C) dig D) all of the above

Answer 10

D) all of the above

Question 11

What is a common symptom of DNS issues?

Answer 11

Inability to resolve domain names to IP addresses.

Question 12

Fill in the blank: The _______ file contains the DNS records for a domain.

Answer 12

zone

Question 13

What is the role of a DHCP relay agent?

Answer 13

To forward DHCP requests and responses between clients and servers on different networks.

Question 14

True or False: ADB can be used to install APK files directly to an Android device.

Answer 14

True

Question 15

What command would you use to check the current DHCP leases on a Linux server?

Answer 15

cat /var/lib/dhcp/dhcpd.leases

Question 16

What is the default lease time for DHCP addresses?

Answer 16

Usually 24 hours, but it can vary by configuration.

Question 17

Multiple Choice: Which of the following is NOT a DNS record type? A) A B) MX C) DHCP D) CNAME

Answer 17

C) DHCP

Question 18

What command is used to connect to a device using ADB?

Answer 18

adb connect <device_ip></device_ip>

Question 19

What does TTL stand for in DNS records?

Answer 19

Time to Live

Question 20

Fill in the blank: A DNS _______ is used to map a domain name to an IP address.

Answer 20

A record

Question 21

What is the purpose of the ‘ipconfig /flushdns’ command?

Answer 21

To clear the DNS resolver cache on a Windows machine.

Question 22

True or False: The DHCP server can assign IP addresses outside the defined range.

Answer 22

False

Question 23

What does the ‘adb devices’ command do?

Answer 23

Lists all connected Android devices.

Question 24

Multiple Choice: What is the primary function of DNS? A) Network management B) Domain name resolution C) IP address assignment D) File sharing

Answer 24

B) Domain name resolution

Question 25

What is a common method to diagnose DHCP issues?

Answer 25

Checking the DHCP server logs for errors.