Networking Quiz Answers Summary

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Question:
  1. How many IP addresses can one find in the header of an IP packet? A) 2 B) 1 C) 3 D) 4
  2. Collisions are possible in full-duplex Ethernet networks

false 3. What is term for the hardware coded address found on an interface? A) IP Address B) FQDN Address C) Interface Address D) MAC Address 4. MAC layer by OSI model is also known as A) Layer 1 B) Layer 6 C) Layer 3 D) Layer 2 E) Layer 7 5. The network address is A) None of the mentioned B) The first usable address of the subnet C) The first address of the subnet D) The last address of the subnet 6. Which computers would be able to communicate directly (without any routers involved): A) 10.10.0.17/22 and 10.10.1.30/23 B) 192.168.0.5/26 and 192.168.0.100 C) 192.168.17.15/29 and 192.168.17.20/28 D) 10.5.5.1/24 and 10.5.5.100/25 7. Which of the following is NOT a valid MAC Address? A) EA:BA:AA:EE:FF:CB B) 80:GF:AA:67:13:5D C) 13:16:86:53:89:43 D) 88:0C:00:99:5F:EF E) 95:B5:DD:EE:78:8A 8. Which of the following are valid IP addresses? A) 10.10.14.0 B) 192.168.13.255 C) 1.27.14.254 D) 192.168.256.1 9. Select valid subnet masks: A) 255.192.0.0 B) 255.255.192.255 C) 192.0.0.0 D) 255.255.224.0 10. In MikroTik RouterOS, Layer-3 communication between 2 hosts can be achieved by using an address subnet of: A) /32 B) /31 C) /30 D) /29 11. Select valid MAC-address A) AEC8:21F1:AA44:54FF:1111:DDAE:0212:1201 B) G2:60:CF:21:99:H0 C) 00:00:5E:80:EE:B0 D) 192.168.0.0/16 12. 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) 192.168.100.68/255.255.255.252 B) 192.168.100.70/255.255.255.252 C) 192.168.100.71/255.255.255.252 D) 192.168.100.69/255.255.255.252 13. Select which of the following are 'Public IP addresses': A) 172.168.254.2 B) 172.28.73.21 C) 11.63.72.21 D) 10.110.50.37 E) 192.168.0.1 14. What protocol does ping use? A) UDP B) TCP C) ICMP D) ARP 15. The basic unit of a physical network (OSI Layer 1) is the: A) Bit B) Header C) Byte D) Frame 16. 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) 15.242.55.31-15.242.55.62 B) 15.242.55.33-15.242.55.62 C) 15.242.55.32-15.242.55.63 D) 15.242.55.33-15.242.55.63 17. 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:192.168.2.2/24 gateway:202.168.125.45 C) IP:192.168.2.115/24 gateway: 192.168.2.1 D) IP:192.168.1.223/24 gateway:248.115.148.136 E) IP:192.168.2.253/24 gateway:202.168.0.1 18. Which of the following protocols / port s are used for SNMP. (Simple Network Managemnt Protocol) A) TCP 123 B) TCP 25 C) TCP 161 D) UDP 162 E) UDP 161 F) TCP 162 19. How many layers does Open Systems Interconnection model have? A) 6 B) 9 C) 7 D) 12 E) 5 20. How many usable IP addresses are there in a 20-bit subnet? A) 4096 B) 2048 C) 4094 D) 2047 E) 2046

Answer:

Here are the answers to your questions:

  1. How many IP addresses can one find in the header of an IP packet?

    • A) 2 (Source IP and Destination IP)

  2. Collisions are possible in full-duplex Ethernet networks

    • False (In full-duplex mode, collisions do not occur.)

  3. What is the term for the hardware coded address found on an interface?

    • D) MAC Address

  4. MAC layer by OSI model is also known as

    • D) Layer 2

  5. The network address is

    • C) The first address of the subnet

  6. Which computers would be able to communicate directly (without any routers involved):

    • D) 10.5.5.1/24 and 10.5.5.100/25 (Both are in the same subnet.)

  7. Which of the following is NOT a valid MAC Address?

    • B) 80:GF:AA:67:13:5D (GF is not a valid hexadecimal value.)

  8. Which of the following are valid IP addresses?

    • A) 10.10.14.0 (This is a valid IP address, but it is a network address.)
    • B) 192.168.13.255 (This is a valid IP address, but it is a broadcast address.)
    • C) 1.27.14.254 (This is a valid IP address.)
    • D) 192.168.256.1 (This is NOT a valid IP address.)

  9. Select valid subnet masks:

    • A) 255.192.0.0
    • D) 255.255.224.0

  10. In MikroTik RouterOS, Layer-3 communication between 2 hosts can be achieved by using an address subnet of:

    • C) /30 (This allows for 2 usable IP addresses.)

  11. Select valid MAC-address

    • C) 00:00:5E:80:EE:B0

  12. What will be a valid IPv4 address for the RouterBOARD 750 for a successful connection to the device?

    • D) 192.168.100.69/255.255.255.252 (This is the only valid address in the same subnet.)

  13. Select which of the following are 'Public IP addresses':

    • C) 11.63.72.21 (This is a public IP address.)

  14. What protocol does ping use?

    • C) ICMP

  15. The basic unit of a physical network (OSI Layer 1) is the:

    • A) Bit

  16. Please choose all valid host address range within the same subnet.

    • B) 15.242.55.33-15.242.55.62
    • D) 15.242.55.33-15.242.55.63 (Valid host addresses in the range.)

  17. Mark the correct configuration on client PC to access to the Internet

    • C) IP:192.168.2.115/24 gateway: 192.168.2.1 (This is a valid configuration.)

  18. Which of the following protocols / ports are used for SNMP. (Simple Network Management Protocol)

    • C) TCP 161
    • E) UDP 161
    • D) UDP 162 (UDP 162 is used for SNMP traps.)

  19. How many layers does Open Systems Interconnection model have?

    • C) 7

  20. How many usable IP addresses are there in a 20-bit subnet?

    • C) 4094 (2^12 - 2 = 4094 usable addresses, accounting for network and broadcast addresses.)

Feel free to ask if you have any more questions!