Exam Prep Questions


Question 1

What is the minimum length that an IP datagram header can be?

  • A. 20 bytes

  • B. 60 bytes

  • C. 20 words

  • D. 60 words

A1:

Answer A is correct because an IP datagram header must be at least 20 bytes long. Answer B is incorrect because this is the maximum length an IP datagram header can be. Answers C and D are incorrect because the minimum number of 32-bit words an IP datagram header can be is 5.

Question 2

You have a system with a physical network interface hme0 . Which command creates a logical interface using the next available logical interface number and assigns an IPv4 address of 192.168.5.5 ?

  • A. ifconfig hme0:1 plumb 192.168.5.5 up

  • B. ifconfig hme0:1 addif 192.168.5.5 up

  • C. ifconfig addif 192.168.5.5 up

  • D. ifconfig hme0 addif 192.168.5.5 up

A2:

Answer D is correct because the command ifconfig hme0 addif 192.168.5.5 up creates a logical interface using the next available logical interface number and the IPv4 address 192.168.5.5 . Answer A is incorrect because this command, although it will configure a logical interface, specifically states which logical interface to use. In this case, it could destroy and replace an existing logical interface. Answer B is incorrect because the syntax is wrong. In this answer, the hme0:1 logical interface is being specified, as well as the addif option, which uses the next available logical interface number. Answer C is incorrect because the command is missing the physical interface hme0 as the first argument.

Question 3

In an IP datagram header, what does the flag field DF mean?

  • A. Indicates that this datagram is a fragment.

  • B. Identifies the location of the fragment in the datagram.

  • C. Indicates that this datagram should not be fragmented .

  • D. Indicates that the flag is not used.

A3:

Answer C is correct because the use of the DF flag indicates that the IP datagram should not be fragmented. The main reason for this is that the destination is not capable of reassembling the fragments . Answer A is incorrect because this is the description of the MF flag. Answer B is incorrect because the location of a fragment in an IP datagram is identified by the fragment offset field. Answer D is incorrect because this flag field is used.

Question 4

This protocol is used at the Internet layer of the TCP/IP model to send control and error messages. Which protocol is being described?

  • A. IP

  • B. ICMP

  • C. TCP

  • D. UDP

A4:

Answer B is correct because the Internet Control Message Protocol (ICMP) sends control and error messages at the Internet layer of the TCP/IP model. Answer A is incorrect because IP is a protocol that handles connectionless delivery and fragmentation at the Internet layer of the TCP/IP model. Answers C and D are incorrect because TCP and UDP are Transport layer protocols.

Question 5

Which file contains the canonical hostname of a system?

  • A. /etc/inet/ hosts

  • B. /etc/inet/ netmasks

  • C. /etc/hostname.hme0

  • D. /etc/nodename

A5:

Answer D is correct because the file /etc/nodename contains a system's canonical hostname. Answer A is incorrect because /etc/inet/hosts is used to provide IPv4 address-to-hostname mapping. Answer B is incorrect because /etc/inet/netmasks is used to associate IPv4 network masks with IPv4 network numbers . Answer C is incorrect because /etc/hostname.hme0 is the configuration file used to configure a physical network interface named hme0 .

Question 6

Which of the following are advantages of using logical interfaces? Choose 2.

  • A. They are cheaper because there is no need to purchase additional network cards.

  • B. Administration is easier because everything is done on a single system, rather than on multiple systems.

  • C. They provide hardware resilience in case the physical interface fails.

  • D. They enhance network performance by reducing network traffic.

A6:

Answers A and B are correct because the logical interfaces are cheaper. There is no need to purchase additional network cards, and the administration overhead is reduced because everything can be done on a single system, rather than on multiple systems. Answers C and D are incorrect because they are false; logical interfaces do not provide any hardware resilience because they are tied to the physical interface, and they can also increase the amount of network traffic because logical interfaces use the same physical interface.

Question 7

Which of the following are reserved private network ranges of IP addresses as defined in RFC 1918? Choose 2.

  • A. 10.0.0.0 10.255.255.255

  • B. 11.0.0.0 11.255.255.255

  • C. 172.16.0.0 172.31.255.255

  • D. 172.100.0.0 172.100.255.255

A7:

Answers A and C are correct because the IP address ranges that are reserved for private networks, and defined in RFC 1918, are 10.0.0.0 10.255.255.255 , 172.16.0.0 172.31.255.255 and 192.168.0.0 192.168.255.255 . Answers B and D are incorrect because they do not fall within the ranges defined in RFC 1918.

Question 8

Which of the following files must be edited to effect a manual change of the system hostname? Choose 3.

  • A. /etc/nodename

  • B. /etc/inet/networks

  • C. /etc/inet/netmasks

  • D. /etc/system

  • E. /etc/inet/hosts

  • F. /etc/net/ticlts/hosts

A8:

Answers A, E, and F are correct because /etc/nodename , /etc/inet/hosts , and /etc/net/ticlts/hosts are all files that must be edited to effect a manual change of the system hostname. Answer B is incorrect because /etc/inet/networks is used to provide network number “to “network name translation. Answer C is incorrect because /etc/inet/netmasks is used to identify the network masks for subnetting purposes. Answer D is incorrect because /etc/system is a file used for customizing the operation of the Solaris kernel.

Question 9

To which IP address class does the address 192.168.20.35 belong?

  • A. A

  • B. B

  • C. C

  • D. D

A9:

Answer C is correct because IP addresses in the range 192 “223 are classified as class C IP addresses. Answer A is incorrect because class A network addresses must be in the range 0 “127. Answer B is incorrect because class B network addresses must be in the range 128 “191. Answer D is incorrect because class D network addresses are used for multicasting and must be in the range 224 “239.

Question 10

Your system has an hme network interface named hme0 . Which configuration file needs to be edited to configure the interface?

  • A. /etc/inet/netmasks

  • B. /etc/hostname.hme0

  • C. /etc/inet/networks

  • D. /etc/hostname.hme1

A10:

Answer B is correct because the /etc/hostname.hme0 file needs to be edited to configure an hme0 interface. Answer A is incorrect because /etc/inet/netmasks is used to identify the network masks for subnetting purposes. Answer C is incorrect because /etc/inet/networks is used to provide network number “to “network name translation. Answer D is incorrect because /etc/hostname.hme1 would be the configuration file to edit if you were configuring the second hme network interface, hme1 .



Solaris 9 Network Administration Exam Cram 2 (Exam Cram CX-310-044)
Solaris 9 Network Administrator Exam Cram 2 (Exam CX-310-044)
ISBN: 0789728702
EAN: 2147483647
Year: 2003
Pages: 174
Authors: John Philcox

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