CCNA Guide to Networking - Ch9 - Quiz Solutions

CCNA Guide to Networking - Ch9
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  CCNA Guide to Cisco Networking, Fourth EditionChapter 9 Solutions Chapter 9 Solutions Review Questions 1. What is used on routers to hide intranet I addresses !ro the Internet#a. A $. C%A c. NAT d. F&A'(. Which !la)or o! NA' aps ultiple internal I addresses to a single e*ternal address#a. A $. C%Ac. NA' d. PAT +. %ow does o)erlapping occur#a. 'he network ad inistrator doesnt plan !or Internet connecti)it-. $. 'he network ad inistrator uses registered I addresses without getting per ission. c. Both a and b d. None o! the a$o)e. When would it $e ost appropriate to con!igure static NA'# a. When you want to guarantee that a particular device is always associated with the samepublic IP address.  $. When -ou dont care what pu$lic I address is used $- a de)ice.c. When the inside/to/outside I address apping is not i portant.d. When -ou want e)er- inside I address to translate to a single pu$lic address.0. What is the purpose o! the ip nat inside co and#a. 'o tell the router to use static NA' $. 'o tell the router to use d-na ic NA'c. 'o tell the router to enter NA' con!iguration ode d. To tell the router that the current interface is to be considered the inside interface . 'he 2NS ser)ice is re3uired in order to $rowse the we$. 'rue or False .4. Which o! the !ollowing co ands staticall- aps a na e to an I address#a. ip na e/ser)er  b. ip host c. ip addressd. ip na e5. Which o! the !ollowing co ands disa$les the de!ault 2NS lookup !unction on a Cisco router# a. no ip domainloo!up  CCNA Guide to Cisco Networking, Fourth EditionChapter 9 Solutions  $. no lookupc. no ip/lookupd. no ip do ain/na e lookup9. Which o! the !ollowing co ands directs the router to a 2NS ser)er !or I/to/na e resolution#a. ip host $. ip addressc. ip na e d. ip nameserver 16. I! -ou ha)e disa$led the lookup !unction on -our Cisco router, -ou will ha)e to re/ena$le it i! -ou want to use a 2NS ser)er to resol)e na es on -our router. True  or False.11. Which o! the !ollowing is N7' a 2%C packet t-pe#a. 2%C 7FFE&  b. #$P %&N c. 2%C &E8ES'd. 2%C AC: e. 2%C 2ISC7;E& 1(. What is the purpose o! the ser)ice dhcp co and#a. Starts onitoring the 2%C ser)ice $. 'urns o!! 2%C de$ugging c. 'nables #$P d. 2isa$les 2%C1+. Where is the 2%C data$ase t-picall- stored#a. 7n the router  b. (n a server c. 7n a C2 or 2;2d. 'he data$ase is not stored1. Which o! the !ollowing are optional when con!iguring -our router to $e a 2%C ser)er# <Choose all that appl-.= a. efault gateway  $. I addressc. Su$net ask  d. N% server addresse. WIN% server addressf. omain name 10. Which o! the !ollowing onitoring co ands displa-s an- I addresses leased $- the 2%C ser)er and the corresponding >AC address o! the host#a. show ip dhcp pool  CCNA Guide to Cisco Networking, Fourth EditionChapter 9 Solutions  $. show dhcp c. show ip dhcp binding d. show $inding1. Which o! the !ollowing onitoring co ands displa-s 2%C pool speci!ic in!or ation# a. show ip dhcp pool  $. show dhcpc. show ip dhcp $indingd. show $inding14. Ciscos S2> can $e used to con!igure network ser)ices such as 2NS and 2%C. True  or False.15. What is the di!!erence $etween con!iguring d-na ic NA' and A' on a Cisco router using the S2>#a. 'he access list that de!ines the inside addresses will $e di!!erent. $. ?ou will select o)erload instead o! d-na ic in the Add Address 'ranslation &ule dialog $o*.c. 'he direction selected !or A' will $e Fro outside to inside rather than Fro inside to outside. d. &ou will translate to an interface rather than to a pool of addresses. 19. It is easier to con!igure a pointer to a 2NS ser)er using the co and line inter!ace rather than the S2>. True  or False. (6. What is another na e !or a wildcard ask# a. inverse mas!   $. o$tuse ask c. $ackwards ask d. !lip ask  Case Projects Case Project 1 The three types of NAT are static, dynamic, and PAT. Static NAT uses a one-to-one mapping of inside tooutside addresses. An inside address on a particular host will always be using the same outside address. With dynamic NAT, outside addresses are assigned dynamically from a pool of addresses. Theadministrator doesn’t really care which outside P address a host is assigned. Port Address Translation translates between pri!ate internal P addresses to a public e ternal P address with the addition of port information. PAT uses the P address on the e ternal physical interface for translation. Case Project 2 #irst, it is essential that $%&P is enabled on the router. t probably is because that is the default but 'ust in case, the command is ser!ice dhcp. Ne t, you must either configure a ser!er to hold the $%&P database using the ip dhcp database command or you must disable conflict logging using the no ip dhcpconflict logging command. The only other commands you must configure are the ip dhcp pool commandto configure the pool name, and the networ( command which defines the !alid P addresses in the pool by specifying the networ( number and the subnet mas(. The optional commands include the ip dhcp e cluded-address command which will tell $%&P not to offer P addresses already statically configured)  CCNA Guide to Cisco Networking, Fourth EditionChapter 9 Solutions the default-router command, which will define the default gateway) and the dns-ser!er and netbios-name-ser!er commands which will define the $NS and WNS ser!er locations. Case Project 3 Name resolution is important because without a process to do it, we would ha!e to (now the P address of e!ery de!ice we wanted to communicate with. The ip host command statically configures a hostnameto P address mapping on a &isco router. This is sometimes done for a few de!ices but it is not scalable since e!ery single de!ice mapping must be typed into the router. f the mapping changes, the administrator has to reconfigure it. The ip name-ser!er command is more fle ible. t points the router to the P address of a $NS ser!er on the networ(. Since $NS is a dynamic process, all names referred to by the router, will be resol!ed automatically by the ser!er without router configuration. The dns-ser!er command shares the $NS ser!er address with all hosts on the networ( !ia $%&P.
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