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1. Which class’s IP addresses can be assigned to network interfaces?
- Class A,B,C, D and E
- Class A and B
- Class A,B,C and D
- Class A, B and C
2. This body is responsible for assigning public IP addresses:
- Network Allocation Centre
- InterNET
- Network Information Association
- InterNIC
3. Which of the following does not need a public IP address?
- User’s Computer Section
- Email Server
- DNS Server
- Proxy Server
4. Which file is used for mapping the application services to their respective port numbers?
- /etc/netservices
- /etc/services
- /etc/ports
- /etc/network
5. The default route is the route that will be used when the router _______.
- Finds a matching route in the routing table
- Sends a minimum of one packet to a final destination
- Does not have a route for the packet’s destination in the routing table
- Contains an empty routing table
6. Which is the standard port used for HTTP service?
- 81
- 120
- 23
- 80
7. A server sends 2000 bytes of data but the client receives only 1200 bytes. The server continues sending data, though some packets are lost intermittently. This pattern indicates:
- UDP
- IP
- ICMP
- TCP
8. You are trying to telnet to a server and get a Host unreachable error. Which command will you use now to check the connectivity?
traceroutepingipnetstat
9. The traceroute command can be used by regular and root users.
True or False?
- True
- False
10. The _____ command is used to do reverse IP address lookups.
hostnamenetstatunamehost
11. Which of the following is the subnet mask for Class B networks?
- 255.255.255.0
- 255.255.0.0
- 255.255.*.*
- 224.224.224.0
12. Which are the different types of IP addresses used on the Internet?
- Public and Broadcast
- Public and Private
- Private and Proxy
- Public and Proxy
13. The netstat command is used to add a route to the kernel’s routing table.
True or False?
- True
- False
14. Which of the statements are not true about the routing table?
- The routing table can be modified by the root user only
- The
ipcommand is used to set up routing - The default gateway is not specified in the routing table
- The IP layer consults the routing table
15. Which protocol uses a sequence number mechanism to ensure ordered delivery of data?
- ICMP
- UDP
- IP
- TCP
16. The kernel’s routing table is maintained by the IP protocol.
- True
- False
17. IPv6 addresses are based on _____:
- 32 bits
- 128 bits
- 64 bits
- 256 bits
18. Which protocol is used by the FTP daemon?
- ICMP
- FTP
- UDP
- TCP
19. What of the following is not true about the tracepath command?
- Traces the path to a network host
- Sends ICMP messages
- Discovers maximum transmission unit (MTU) along the path
- Can be used only by root user
20. What is used to partition a network into different logical networks?
- Partitioning
- Dividing
- Masking
- Subnetting
21. Given an IP address 10.11.15.8, the host ID derived from it is:
- 11.15.8
- 255.11.15.8
- 10.11.15
- 10.11.15.0
22. What is the size of UDP headers?
- Maximum 10 bytes
- 20 bytes
- 12 bytes
- 8 bytes
23. Which file holds the list of the name servers?
- /etc/nameservers.conf
- /etc/host.conf
- /etc/dns.conf
- /etc/resolv.conf
24. The ____ command is used for troubleshooting the configuration of DNS servers.
findipdighost
25. Which of the following commands is used to telnet to port 33?
telnet server_name --33telnet server_nametelnet server_name –p 33telnet server_name 33
26. Which protocol does the ping command use?
- UDP
- ICMP
- TCP
- IP
27. The 4th octet is used for creating subnets for Class C networks.
True or False?
- True
- False
28. The _____ indicates the maximum number of IP routers that can route a packet.
- Time to Live
- Time to Route
- Router Hops
- Time to Reach
29. FTP encrypts the user name and password entered by the user to log in.
True or False?
- True
- False
30. If you want to FTP a zip file from your computer to the server, which mode will you use for file transfer?
- Zip
- Binary
- ASCII
- Default
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