TCP/IPNetwork Administration-Solaris™ Operating Environment

bnso

51. A ______ is a virtual address that the kernel associates with any service it provides.

a. service number
b. port number
c. RPC registration
d. IP address

Answer: b

52. A daemon running on the server, ______, listens for incoming requests, and then contacts the program responsible for the service and instructs it to respond.

a. daemond
b. init
c. inetd
d. netstat

Answer: c

53. (1) ______ needing information establish a connection to a known (2) ______ on a server.

a. (1) Clients        (2) application
b. (1) Ports    (2) client
c. (1) Clients  (2) service
d. (1) Services (2) client

Answer: c

54. ______ is started by the script /etc/init.d/inetsvc.

a. init
b. netstat
c. inetd
d. ftpd

Answer: c

55. The inet configuration file is ______.

a. /etc/inetd.conf
b. /etc/inet/inetd.conf
c. /etc/init.d/inetsvc
d. /etc/networks/inetd.conf

Answer: b

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56. The following is an example of the contents of what file?  
ftp-data  ;  ;     20/tcp
ftp ; ; ;     21/tcp
telnet    ;  ;     23/tcp  
smtp      ;  ;     25/tcp
pop3      ;  ;    110/tcp  

a. /etc/hosts
b. /etc/system
c. /etc/services
d. /etc/bootparams

Answer: c

57. ______ services are a service / port numbering scheme that eliminate the dedicated port requirements of inetd.

a. NFS
b. DNS
c. DHCP
d. RPC

Answer: d

58. RPC services are registered by the ______ process.

a. rpcmake
b. rpcinit
c. rpcinfo
d. rpcbind

Answer: d

59. True or false: Some RPC services are started at boot time, others only at client request.

a. True
b. False

Answer: a

60. The command ______ may be used to monitor and manipulate the activities of RPC.

a. rpcbind
b. rpcmake
c. rpcinfo
d. rpcmv

Answer: c

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Part 2
This test covers:  DHCP, DNS, Routing, Network Troubleshooting, and general network exam topics.
Degree of Difficulty: Moderate

1. In the Sun TCP/IP model, the layer responsible for name resolution is:

a. Network
b. Application
c. Transport
d. Internet

Answer: d

2. A frame greater than the MTU is known as:

a. runt
b. overhead
c. jabber
d. fragment

Answer: c

3. Which command is used to print the "dhcp_network" file?

a. dhtadm -P
b. pntadm -P
c. pntadm --print
d. dhtadm -p
e. dhtadm --print

Answer: b

4. Which OSI layer is responsible of re-establishing interrupted connections?

a. Transport
b. Presentation
c. Network
d. Datalink
e. Application
f. Session

Answer: f
Session layer controls the interruptions in connections and if exist, they are re-established.

5. Which of the following is a correct way of adding a new network route?

a. route add net 192.168.2.0 192.168.1.1.1
b. route add -n 192.168.2.0 192.168.1.1
c. route add 192.168.2.0/24 192.168.1.1
d. route add -net 192.168.2.0 192.168.1.1

Answer: a
With route command you issue an "add" option, in order to describe the destination as a network you add "net" argument and then the destination network; the gateway.

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6. Changing /etc/nsswitch.conf can effect the behavior of which command?

a. /usr/sbin/ifconfig
b. /sbin/ifconfig

Answer: a
Be aware that there are two ifconfig commands. The two versions differ in how they use name services. The /sbin/ifconfig is called by the /etc/rc2.d/S30sysid.net startup script. This version is not affected by the configuration of the /etc/nsswitch.conf file. The /usr/sbin/ifconfig is called by the /etc/rc2.d/S69inet and the /etc/rc2.d/S72inetsvc startup scripts. This version of the ifconfig command is affected by the name service settings in the /etc/nsswitch.conf file.

7. What is dynamic routing?

a. localhost contains a list that defines the available devices to forward packets
b. route forwarding to other devices is defined explicity until next reboot
c. there is an entry that defines to route all the traffic
d. routes and clients listen to broadcasts and try to determine the best paths
e. None of the above

Answer: e

8. What is a valid statement about a "port"?

a. Solaris does not use ports but sockets
b. There may be ports without associated processes
c. It is an upper-layer process
d. Every process need a port for proper functioning

Answer: c

9. The Command "netstat -i" displays the collisions and errors

a. True
b. False

Answer: a

10. True or False: In order to have name resolution applied in "netstat" outputs, you need "-n" option.

a. True
b. False

Answer: b
netstat's -n option displays the results in IP address not using name resolution.

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11. A Class C network with 8 subnets - You want to use largest number of effective hosts per network. Which subnet mask do you use?

a. 255.255.255.240
b. 255.255.255.248
c. 255.255.255.252
d. 255.255.255.224
e. 255.255.255.192

Answer:  a

12. What will happen, if you put an entry as "nameserver 0.0.0.0" in /etc/resolv.conf?

a. DNS queries will fail
b. The local subnet will be queried for a Domain Name Server first
c. This line identifies the server itself
d. Nothing, it will just skip that line

Answer: c

13. Which services use UDP?

a. name
b. bootpc
c. netstat
d. biff
e. imap

Answer: a,b,d

14. Which of the following are link layer devices?

a. Hubs
b. Routers
c. Gateways
d. Bridges
e. Switches

Answer: d,e

15. Which command creates a "dhcp_network" file?

a. pntadmn -C
b. pntadm -c
c. dhcpadm -C
d. dhtadm -C
e. dhtadm -c

Answer: a

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16. What is the hop-count limit of RIP?

a. 15
b. 10
c. 8
d. 16

Answer: a

17. Which netstat option displays a similar outpout to "arp -a"?

a. -l
b. -n
c. -nr
d. -p
e. -r

Answer: d

18. Which file contains private "mail aliases" of a user?

a. .maliases
b. /etc/mail/aliases
c. .forward
d. .mailrc

Answer: d

19. Which process looks for /etc/gateways?

a. in.routed
b. inetd
c. S72routed
d. in.gated

Answer: a

20. Looking at the "snoop" output below, which is/are not true?
"host1.acme.com ---> host2.acme.com DNS R 57.184.12.64.in-addr.arpa. Internet PTR ads.web.aol.com"

a. This is a lookup for ads.web.aol.com
b. This is a reverse lookup request
c. Host1 looks up for 57.184.12.64
d. This is a request from host1 to host2
e. This is a reverse lookup by host2.acme.com

Answer: a,c,d

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21. A broadcast has a destination address of

a. All Zeros
b. All Ones
c. Zeros for the bits representing the network and ones for rest
d. Ones for the bits representing the network and zeros for rest
e. None of the above

Answer: b
A broadcast address is 255.255.255.255

22. ifconfig output "ffff0000" corresponds to?

a. 255.255.255.0
b. 255.255.0.0
c. 255.255.255.255
d. 255.0.0.0

Answer: b

23. Which startup option will cause in.routed to act as a router?

a. -R
b. -r
c. -q
d. -g
e. -s
f. -q

Answer: e

24. In a "snoop" output, what can be found together with "ARP R" string?

a. broadcast
b. A MAC address in xx:xx:xx:xx:xx:xx form
c. ?
d. who is xxx.xxx.xxx.xxx

Answer: b
First goes an ARP C asking for who is xxx.xxx.xxx.xxx?
And reply comes in ARP R desired_IP, responding host's IP and the desired MAC address.

25. If you subnet a Class C network with subnet mask 255.255.255.252, how many effective subnets do you get?

a. 30
b. 2
c. 14
d. 6
e. 62

Answer: e

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26. Sun's TCP/IP Network Model Application Layer is a combined form of which 3 OSI layers?

a. Session
b. Transport
c. Application
d. Data Link
e. Presentation
f. Network

Answer: a,c,e

27. If the NIC (considering devic name as hme0) is operating at 100Mbps, what would be the output of "ndd /dev/hme link_speed" command?

a. high
b. 1
c. 100
d. 0

Answer: b

28. Which protocol is responsible for fragmenting data?

a. UDP
b. ARP
c. IP
d. ICMP
e. TCP

Answer: c

29. Which scripts starts "in.rdisc"?

a. S99rdisc
b. S72inetvc
c. S68inet
d. S71inetsvc

Answer: c

30. Which of the following prevents in.routed or in.rdisc from starting?

a. /etc/defaultrouter exists and not empty
b. System is configured for DHCP
c. /etc/notrouter exists
d. /etc/gateway exists

Answer: a

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31. Largest amount of data that can be transmitted within a packet is called?

a. MTU
b. a payload
c. a runt
d. MSS
e. CSMA/CD
f. a jabber

Answer: a

32. Your network ID is 201.11.10.0 with 8 subnets. You want to use largest number of hosts per network. Which
subnet mask do you use?

a. 255.255.255.192
b. 255.255.255.248
c. 255.255.255.224
d. 255.255.255.252
e. 255.255.255.240

Answer: e

33. What does "@" mean in a DNS configuration file?

a. Comment
b. Continuation of line
c. used for e-mail address of SOA administrator
d. zone or origin

Answer: d

34. Which is a pseudo device driver that provides an interface between ipd and ipdptp and link manager?

a. none
b. /dev/ipdptp
c. /dev/ipdcm
d. /dev/ipd

Answer: c

35. Which of the following is among the benefits of a LAN by Management point-of-view?

a. Resource Accessibility
b. Workgroup Sharing
c. Centralized Clients
d. Centralized Resources

Answer: d

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36. Looking at the following command and results, which is true?
host1# ping 10.12.10.1
ICMP Net Unreachable from gateway host1 (192.168.1.10) for icmp from host1 (192.168.1.10)

a. Default gateway is not defined
b. ICMP is not allowed at the network
c. NIC is down
d. NIC is not configured properly

Answer: a,c

37. Which file is used by the runtime daemon and administrative utilities to determine which name service to contact?

a. /etc/dhcpconfig
b. /etc/dhcp/default
c. /etc/dhcp.config
d. /etc/default/dhcp

Answer: d

38. What file is shown below?


a. /etc/defaultrouter
b. /etc/netmasks
c. /etc/inet/hosts
d. /etc/inet/networks

Answer: d
The purpose of /etc/inet/networks file is to associate a network name to a network number.  It looks similar
to /etc/inet/hosts, except for the IP address has only 3 octets; identifying the network number.

39. Which is not included in "sendmail.cf"?

a. Rule Sets
b. MDA Listing
c. Options
d. Macros
e. Aliases

Answer: e

40. Which holds priority in the routing algorithm?

a. Query is sent to default router
b. Routing table is checked for Network Number
c. The destination is checked for existence in the local LAN
d. Routing table is checked for IP number

Answer: c