1. How many usable IP addresses are there in a 23-bit (255.255.254.0) subnet?
a. 254
b. 512
c. 510
d. 508
2. A network ready device is directly connected to a MikroTik RouterBOARD 750 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. 192.168.100.69/255.255.255.252
b. 192.168.100.71/255.255.255.252
c. 192.168.100.70/255.255.255.252
d. 192.168.100.68/255.255.255.252
3. Select valid subnet masks:
a. 192.0.0.0
b. 255.255.224.0
c. 255.255.192.255
d. 255.192.0.0
4. What protocol does ping use?
a. UDP
b. ICMP
c. ARP
d. TCP
5. Select valid MAC-address
a.192.168.0.0/16
b. 00:00:5E:80:EE:B0
d. AEC8:21F1:AA44:54FF:1111:DDAE:0212:1201
e. G2:60:CF:21:99:H0
6. Which computers would be able to communicate directly (without any routers involved)
a. 10.5.5.1/24 and 10.5.5.100/25
b. 192.168.0.5/26 and 192.168.0.100
c. 10.10.0.17/22 and 10.10.1.30/23
d. 192.168.17.15/29 and 192.168.17.20/28
7. How many IP addresses can one find in the header of an IP packet?
a. 4
b. 1
c. 2
d. 3
8. Which of the following protocols / port s are used for SNMP. (Simple Network Managemnt Protocol)
a. TCP 25
b. TCP 161
c. UDP 161
d. UDP 162
e. TCP 123
f. TCP 162
9. How many usable IP addresses are there in a 20-bit subnet?
a. 2046
b. 2047
d. 4094
e. 2048
f. 4096
10. A PC with IP 192.168.1.2 can access internet, and static ARP has been set for that IP address on gateway. When the PC Ethernet card failed, the user change it with a new card and set the same IP for it.
What else should be done?
a. Nothing - it will work as before
b. MAC-address of the new card has to be changed to MAC address of old card
c. Old static ARP entry on gateway has to be updated for the new card
d. Another IP has to be added for Internet access
11. 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:192.168.2.2/24 gateway:202.168.125.45
d. IP:192.168.2.253/24 gateway:202.168.0.1
e. IP:192.168.1.223/24 gateway:248.115.148.136
12. Which ones of the following are valid IP addresses?
a. 192.168.13.255
b. 10.10.14.0
c. 1.27.14.254
d. 192.168.256.1
13. MAC layer by OSI model is also known as
a. Layer 7
b. Layer 2
c. Layer 3
d. Layer 6
e. Layer 1
14. Which of the following IP addresses are publicly routable?
a. 127.34.155.3
b. 11.3.10.4
c. 172.16.13.23
d. 192.168.1.4
15. The network address is
a. The first usable address of the subnet
b. The first address of the subnet
c. The last address of the subnet
16. Select which of the following are 'Public IP addresses':
a. 10.110.50.37
b. 11.63.72.21
c. 172.168.254.2
d. 172.28.73.21
e. 192.168.0.1
17. Is ARP used in the IPv6 protocol ?
True
False
18. What is term for the hardware coded address found on an interface?
a. MAC Address
b. Interface Address
c. IP Address
d. FQDN Address
19. How many layers does Open Systems Interconnection model have?
a. 12
b. 7
c. 6
d. 9
e. 5
20. In MikroTik RouterOS, Layer-3 communication between 2 hosts can be achieved by using an address subnet of: a. /30
b. /31 c. /29
e. /32
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