Introduction to Linux II – Chapter 14 Exam Answers 100% PDF file

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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?

  • traceroute
  • ping
  • ip
  • netstat

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.

  • hostname
  • netstat
  • uname
  • host

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 ip command 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.

  • find
  • ip
  • dig
  • host

25. Which of the following commands is used to telnet to port 33?

  • telnet server_name --33
  • telnet server_name
  • telnet server_name –p 33
  • telnet 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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