Networking Quiz Answers Summary

Answered using GPT-4o mini by AI Answer Generator

Question:
  1. How many IP addresses can one find in the header of an IP packet? A) 4 B) 1 C) 2 D) 3
  2. The basic unit of a physical network (OSI Layer 1) is the: A) Frame B) Bit C) Header D) Byte
  3. Select valid MAC-address A) 192.168.0.0/16 B) G2:60:CF:21:99:H0 C) AEC8:21F1:AA44:54FF:1111:DDAE:0212:1201 D) 00:00:5E:80:EE:B0
  4. Which of the following is NOT a valid MAC Address? A) 88:0C:00:99:5F:EF B) 80:GF:AA:67:13:5D C) 95:B5:DD:EE:78:8A D) 13:16:86:53:89:43 E) EA:BA:AA:EE:FF:CB
  5. Select valid subnet masks: A) 255.192.0.0 B) 255.255.192.255 C) 192.0.0.0 D) 255.255.224.0
  6. You have a router with configuration
  • Public IP :202.168.125.45/24
  • Default gateway:202.168.125.1
  • DNS server: 248.115.148.136, 248.115.148.137
  • Local IP: 192.168.2.1/24

Mark the correct configuration on client PC to access to the Internet A) IP:192.168.0.1/24 gateway:192.168.2.1 B) IP:192.168.2.115/24 gateway: 192.168.2.1 C) IP:192.168.2.253/24 gateway:202.168.0.1 D) IP:192.168.1.223/24 gateway:248.115.148.136 E) IP:192.168.2.2/24 gateway:202.168.125.45 7. Which of the following are valid IP addresses? A) 192.168.13.255 B) 10.10.14.0 C) 192.168.256.1 D) 1.27.14.254 8. How many layers does Open Systems Interconnection model have? A) 7 B) 9 C) 6 D) 5 E) 12 9. How many usable IP addresses are there in a 20-bit subnet? A) 2046 B) 4096 C) 2047 D) 4094 E) 2048 10. There’s an IP address 15.242.55.62 with a subnet mask 255.255.255.224 (/27). Please choose all valid host address range within the same subnet. A) 15.242.55.33-15.242.55.62 B) 15.242.55.33-15.242.55.63 C) 15.242.55.31-15.242.55.62 D) 15.242.55.32-15.242.55.63 11. Collisions are possible in full-duplex Ethernet networks

  1. Select which of the following are 'Public IP addresses': A) 172.28.73.21 B) 192.168.0.1 C) 10.110.50.37 D) 172.168.254.2 E) 11.63.72.21
  2. A network ready device is directly connected to a MikroTik RouterBOARD with a correct U.T.P. RJ45 functioning cable. The device is configured with an IPv4 address of 192.168.100.70 using a subnet mask of 255.255.255.252. What will be a valid IPv4 address for the RouterBOARD 750 for a successful connection to the device? A) 192.168.100.71/255.255.255.252 B) 192.168.100.70/255.255.255.252 C) 192.168.100.69/255.255.255.252 D) 192.168.100.68/255.255.255.252
  3. In MikroTik RouterOS, Layer-3 communication between 2 hosts can be achieved by using an address subnet of: A) /29 B) /30 C) /31 D) /32
  4. Which of the following protocols / port s are used for SNMP. (Simple Network Managemnt Protocol) A) TCP 161 B) TCP 25 C) TCP 123 D) UDP 162 E) UDP 161 F) TCP 162
  5. Which computers would be able to communicate directly (without any routers involved): A) 192.168.17.15/29 and 192.168.17.20/28 B) 192.168.0.5/26 and 192.168.0.100 C) 10.5.5.1/24 and 10.5.5.100/25 D) 10.10.0.17/22 and 10.10.1.30/23
  6. MAC layer by OSI model is also known as A) Layer 1 B) Layer 7 C) Layer 6 D) Layer 3 E) Layer 2
  7. What protocol does ping use? A) ICMP B) TCP C) UDP D) ARP
  8. What is term for the hardware coded address found on an interface? A) FQDN Address B) IP Address C) Interface Address D) MAC Address
  9. The network address is A) None of the mentioned B) The first usable address of the subnet C) The last address of the subnet D) The first address of the subnet
Answer:

Here are the answers to your questions:

  1. C) 2 - An IP packet header contains the source and destination IP addresses.
  2. B) Bit - The basic unit of a physical network (OSI Layer 1) is the bit.
  3. D) 00:00:5E:80:EE:B0 - This is a valid MAC address format.
  4. B) 80:GF:AA:67:13:5D - This is NOT a valid MAC address because "GF" contains invalid hexadecimal characters.
  5. A) 255.192.0.0 and D) 255.255.224.0 - Both are valid subnet masks.
  6. B) IP:192.168.2.115/24 gateway: 192.168.2.1 - This configuration is correct for accessing the internet.
  7. A) 192.168.13.255, B) 10.10.14.0, and D) 1.27.14.254 - These are valid IP addresses. (C is invalid because 256 is not a valid octet.)
  8. A) 7 - The OSI model has 7 layers.
  9. D) 4094 - In a 20-bit subnet, there are 2^(32-20) = 4096 total addresses, minus 2 for the network and broadcast addresses, leaving 4094 usable addresses.
  10. A) 15.242.55.33-15.242.55.62 and D) 15.242.55.32-15.242.55.63 - Both ranges are valid host address ranges within the subnet.
  11. False - Collisions are not possible in full-duplex Ethernet networks.
  12. E) 11.63.72.21 - This is a public IP address. (A, B, and C are private IP addresses; D is also not a public IP.)
  13. A) 192.168.100.71/255.255.255.252 - This address is valid for the RouterBOARD to communicate with the device.
  14. B) /30 - A /30 subnet allows for 2 usable IP addresses, which is suitable for point-to-point links.
  15. A) TCP 161 and E) UDP 161 - SNMP uses UDP port 161 for requests and TCP port 162 for traps.
  16. C) 10.5.5.1/24 and 10.5.5.100/25 - These two addresses can communicate directly as they are in the same subnet.
  17. E) Layer 2 - The MAC layer is also known as Layer 2 in the OSI model.
  18. A) ICMP - The ping command uses the Internet Control Message Protocol (ICMP).
  19. D) MAC Address - The hardware coded address found on an interface is called a MAC address.
  20. D) The first address of the subnet - The network address is the first address of the subnet.

Feel free to ask if you have any more questions!