Craig Zacker - CompTIA Network+ Practice Tests

225 Which of the following security protocols used to protect traffic exchanged by web browsers and servers was created first?SSLTLSSSHDTLS

226 Which of the following security protocols for web servers or browsers was deprecated in 2015 in favor of Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS)?SSHSSLRDPIPsec

227 In which of the following DNS transactions does the querying system generate a recursive query? (Choose all that apply.)A DNS client sends the server name www.adatum.comfrom a URL to its designated DNS server for resolution.A client's DNS server sends a request to a root domain server to find the authoritative server for the com top-level domain.A client's DNS server sends a request to the com top-level domain server to find the authoritative server for the adatum.comdomain.A client's DNS server, which has been configured to function as a forwarder, sends the server name www.adatum.comfrom a URL to its ISP's DNS server for resolution.A client's DNS server sends a request to the adatum.comdomain server to find the IP address associated with the server name www.

228 Which of the following devices would you most likely configure to function as a Dynamic Host Configuration Protocol (DHCP) server?A wireless routerAn unmanaged switchA hubA bridge

229 Which of the following protocols are responsible for assigning IP addresses to hosts? (Choose all that apply.)Dynamic Host Configuration Protocol (DHCP)Address Resolution Protocol (ARP)Domain Name System (DNS)File Transfer Protocol (FTP)Bootstrap Protocol (BOOTP)

230 Which of the following Domain Name System (DNS) resource records is used only for reverse name resolution?MXAAAACNAMEPTR

231 Which of the following features is supported by DHCP, but not by BOOTP and RARP?Dynamic address allocationRelay agentsManual address allocationAutomatic address allocation

232 Which of the following message types are exchanged by Dynamic Host Configuration Protocol (DHCP) clients and servers during a successful IP address allocation transaction? (Choose all that apply.)DHCPDISCOVERDHCPOFFERDHCPINFORMDHCPACKDHCPREQUESTDHCPNAKDHCPRENEWDHCPRELEASE

233 Which of the following message types are exchanged by Dynamic Host Configuration Protocol (DHCP) clients and servers during a successful IP address lease renewal transaction? (Choose all that apply.)DHCPDISCOVERDHCPOFFERDHCPINFORMDHCPACKDHCPREQUESTDHCPNAKDHCPRENEWDHCPRELEASE

234 Which of the following is not a protocol used to allocate IP address assignments to clients on a network?ARPRARPBOOTPDHCP

235 Which of the following best describes what happens when a DNS server receives an iterative name resolution query?The DNS server responds immediately to the query with the best information it has in its resource records or in its cache, or failing that, with an error message stating that it could not resolve the requested name.The DNS server attempts to resolve the requested name by checking its own resource records and cache, or failing that, by issuing its own iterative queries to other DNS servers.The DNS server attempts to resolve the requested name by checking its own resource records and cache, or failing that, by forwarding the name resolution request to another DNS server in a recursive query.The DNS server responds immediately if it is the authoritative server for the domain in which the requested name is located. Otherwise, it returns an error message stating that it could not resolve the requested name.

236 What is the term used to refer to the DNS client mechanism that generates name resolution queries and sends them to DNS servers?RequestorForwarderAuthorityResolver

237 Which of the following TCP/IP parameters, configured on an end system, specifies the IP address of a device that performs domain name resolution services?WINS Server AddressesDefault GatewayDNS Server AddressesSubnet Gateway

238 Which IP address allocation method is not supported by Dynamic Host Configuration Protocol (DHCP)?ManualDynamicStableAutomatic

239 On a Dynamic Host Configuration Protocol (DHCP) server, what is the name of the element you create to specify which IP addresses the server should assign to clients?RangeScopePoolSubnet

240 Why is it necessary to use a relay agent to enable a Dynamic Host Configuration Protocol (DHCP) server to assign IP addresses to clients on other networks? (Choose all that apply.)Because DHCP requires a separate license for each subnet.Because clients cannot initiate an address assignment by contacting DHCP servers on other networks directly.Because DHCP must use the Transmission Control Protocol (TCP) to communicate with clients.Because the DHCP address assignment process relies on broadcast transmissions.

241 Which of the following Domain Name System (DNS) resource records is used to resolve a hostname into an IPv6 address?MXPTRAAAACNAME

242 Ralph has configured a server called NE6 to function as a web server. He does not want to change the server's existing name, but he wants it to also be accessible to clients using the name www . What Domain Name System (DNS) modification can Ralph make to accomplish this?Create an additional A resource record.Create a new CNAME resource record.Modify the existing A resource record.Create a new PTR resource record.

243 Which of the following options should you configure on a Dynamic Host Configuration Protocol (DHCP) server to supply clients with a default gateway address?RouterTime ServerName ServerLPR Server

244 Dynamic Host Configuration Protocol (DHCP) clients rely on which of the following types of transmissions to locate and initiate contact with DHCP servers on the local network?UnicastBroadcastMulticastAnycast

245 Which of the following Domain Name System (DNS) resource record types specifies the IP addresses of the authoritative DNS servers for a particular zone?NSPTRMXSRVSOATXT

246 Which of the following must you create on a DHCP server if you want it to always assign the same IP address to a particular computer?ExclusionScopeReservationRelay

247 Which of the following DHCP address allocation methods enables the server to reclaim IP addresses when they are no longer in use by clients?AutomaticDynamicManualStatic

248 Which of the following technologies enables the IP addresses assigned to clients by a Dynamic Host Configuration Protocol (DHCP) server to be automatically added to the DNS namespace?Reverse name resolutionDynamic DNSAutomatic allocationHOSTS

249 Which of the following is a tool that integrates DHCP and DNS so that each is aware of the changes made by the other?HOSTSDHCPv6IPAMAPIPA

250 Which of the following is the term used to describe the logical distance of a Network Time Protocol (NTP) server from the time source to which it is synchronized?LayerPathIterationStratum

251 Which of the following protocols is used to synchronize computer clocks to a time signal provided by a server?TFTPHTTPSMTPNTP

252 Which of the words in the fully qualified domain name (FQDN) www.paris.mydomain.orgrepresents the topmost layer in the DNS namespace hierarchy?wwwparismydomainorg

253 Which of the following Dynamic Host Configuration Protocol (DHCP) options prevents the client from transmitting IP datagrams that circulate endlessly around the network?Interface MTUDefault IP TTLARP cache timeoutTCP keepalive interval

254 In designing a network for a client, Ed has decided to use both internal and external DNS servers. Which of the following resources should Ed register with the external DNS server? (Choose all that apply.)Company database serversInternet web serversIncoming email serversDomain controllers

255 Ralph is concerned that the IP address scope of available leases on his DHCP server is nearly exhausted. What happens to DHCP clients when there are no IP addresses left in the scope for assignment?Clients are assigned a 0.0.0.0 address.Clients self-assign APIPA addresses.Client DHCP requests are forwarded to another DHCP server.Clients are forced to share IP addresses.