2023年网络工程师考试题库.docx

Exam AQUESTION 1Your company has a single active directory forest that has an active directory domain named na.contoso.com zone. you have enabled DNS scavenging on Server1. Three weeks later, you notice that the staleresource records remain in . You need to ensure that the stale resource records areremoved from . What should you do?A. Stop and restart the DNS service on Server1.B. Enable DNS scavenging on the zone.C. Run the dnscmd Server1 /AgeAllRecords command on Server1.D. Run the dnscmd Server1 /StartScavenging command on Server1.Answer: BSection: (none)Explanation/Reference:QUESTION 2Your company has an Active Directory domain named The company also has a publicnamespace named . You need to ensure that public DNS zone records cannot be copied. Youmust achieve this goal without impacting the functionality of public DNS name resolutions. What should youdo?A. Disable the notify feature for the zone.B. Disable the Allow-Read permission for the Everyone group on the DNS domain.C. Configure the All domain controllers int he domain zone replication option on .D. Configure the Allow zone transfers only to servers listed on the Name Servers option on Answer: DSection: (none)Explanation/Reference:QUESTION 3Your company has a main office and a branch office. The main office has a domain controller named DC1that hosts a DNS primary zone. The branc office has a DNS server named SRV1 that hosts a DNSsecondary Zone. All client computers are configured to use their local server for DNS resolution. Youchange the IP address of an existing server named SRV2 in the main office. You need to ensure that SRV1reflects the change immediately. What should you do?A. Restart the DNS server service on DC1B. Run the dnscmd command by using the /zonerefresh option on DC1.C. Run the dnscmd command by using the /zonerefresh option on SRV1.D. Set the refresh interval to 10 minutes on the Start Of Authority (SOA) record.Answer: CSection: (none)Explanation/Reference:QUESTION 4Your company has an Active Directory domain. The company has a main office and a branch office. Boththe offices have domain controllers that run Active Directory-integrated DNS zones. All client computers areconfigured to use the local domain controllers for DNS resolution. The domain controllers at the branchoffice location are configured as Read-Only Domain Controllers (RODC). You change the IP address of anexisiting server named SRV2 in the main office. You need the branch office DNS servers to reflect thechange immediately. What should you do?A. Run the dnscmd /ZoneUpdateFromDs command on the branch office servers.B. Run the dnscmd /ZoneUpdateFromDs command on a domain controller in the main office.C. Change the domain controllers at the branch offices from RODCs to standard domain controllers.D. Decrease the Minimum (default) TTL option to 15 minutes on the Start of Authority (SOA) record for thezone.Answer: ASection: (none)Explanation/Reference:QUESTION 5Your company has a server named Server1 that runs Windows Server 2023. Server1 runs the DHCPserver role and the DNS server role. You also have a server named ServerCore that runs a ServerCoreinstallation of Windows Server 2023.All computers are configured to use only Server1 for DNS resolution. The IP address of Server1 is192.168.0.1. The network interface on all the computers is named LAN. Server1 is temporarily office. A newDNS server named Server2 has been configured to use the IP address 192.168.0.254. You need toconfigure ServerCore to use Server2 as the preferred DNS server. What should you do?A. Run the netsh interface ipv4 add dnsserver "LAN" static 192.168.0.254 index=1 commandB. Run the netsh interface ipv4 set dnsserver "LAN" static 192.168.0.254 192.168.0.1 both commandC. Run the netsh interfface ipv4 set dnsserver "LAN" static 192.168.0.254 primary command and the netshinterface ipv4 set dnsserver "LAN" static 192.168.0.1 both command.D. Run the netsh interface ipv4 set dnsserver "LAN" static 192.168.0.254 primary command and the netshinterface ipv4 add dnsserver "LAN" static 192.168.0.1 index=1 commandAnswer: ASection: (none)Explanation/Reference:QUESTION 6Your company has a domain controller named Server1 that runs Windows Server 2023 and the DNS serverrole. A server named Server2 runs a custom application.You need to configure DNS to include the following parameters for the custom application:ServicePriorityWeightProtocolPort NumberHost offering this serviceWhich record should you create?A. Host Info (HINFO)B. Service Locator (SRV)C. Canonical Name (CNAME)D. Well-Known Service (WKS)Answer: BSection: (none)Explanation/Reference:QUESTION 7Your company has a main office and two branch offices. Domain controllers in the main office host anActive Directory-Integrated zone. The DNS servers in the branch offices host a secondary zone for thedomain and use the main office DNS servers as the DNS Master servers for the zone. Each branch officehas an application server. Users access the application server by using its fully qualified domain name. Youneed to ensure that users in the branch offices can access their local application server even if the WANlinks are down for three days. What should you do?A. Increase the Expires After setting to 4 days on the Start of Authority (SOA) record for the zone.B. Increase the refresh interval setting o 4 days on the Start of Authority (SOA) record for the zone.C. Configure the Zone Aging / Scavenging Properties dialog box to enable Scavenge State resourcerecords, and set the refresh setting to 4 days.D. Configure the Zone Aging / Scavenging Properties dialog b ox to enable Scavenge Stale resourcerecords, and set the No-refresh interval setting to 4 days.Answer: ASection: (none)Explanation/Reference:QUESTION 8Your company has a single Active Directory forest that has a domain in North America named na.contoso.com and a domain in South America named The client computers run Windows Vista. Youneed to configure the client computers in the North America office to improve the name resolution responsetime for resources int he South America office What should you do?A. Configure a new GPO that disables the Local-Link Multicast Name resolution feature. Apply the policy toall the client computers in the North America office.B. Configure a new GPO that enabled the Local-Link Multicast Name Resolution feature. Apply the policyto all the client computers in the North America office.C. Configure a new GPO that configures the DNS suffix search list option to , na.contoso.com Apply the policy to all client computers in the North America OfficeD. Configure the priority value for the SRV records on each of the North American domain controllers to 5.Answer: CSection: (none)Explanation/Reference:QUESTION 9Your company has multiple DNS servers in the main office. You plan to install DNS on a member server ina branch office. You need to ensure that the DNS server in the branch office is able to query any DNSserver in the main office, and you need to limit the number of DNS records that are transferred to the DNSserver in the branch office. What should you do?A. Configure a secondar zone on the DNS server in the branch office.B. Configure a stub zone on the DNS server in the branch officeC. Configure a stub zone on the DNS server in the main office.D. Configure a primary zone on the DNS server in the branch office.Answer: BSection: (none)Explanation/Reference:QUESTION 10Your company has a DNS server named Server1. Your partner company has a DNS server namedServer2. You create a stub zone on Server1. The master for the stub zone is Server2. Server2 fails. Youdiscover that users are not able to resolve names for the partner company. You need to ensure that usersare able to resolve names for the partner company in the event that Server2 fails. What should you do?A. Change the stub zone to a secondary zone on Server1B. Open the SOA record for the zone on Server2. Change the Minimum (default) TTL setting to 12 hours.C. Open the DNS zone for the partner company on Server2. Create a new Route Through (RT) record anda new host (A) record for Server1.D. Open the primary DNS zone on Server2. Create a new Service Locator (SRV) record and a new host(A) record for Server1.Answer: ASection: (none)Explanation/Reference:QUESTION 11Your company has two servers that run Windows Server 2023 named Server2 and Server3, Both servershave the DNS server role installed. Server3 is configured to forward all DNS requests to Server2. Youupdate a DNS record on Server2. You need to ensure that Server3 is able to immediately resolve theupdated DNS record. What should you do?A. Run the dnscmd /clearcache on Server3B. Run the ipconfig /flushdns command on Server3C. Decrease the Time-to-Live (TTL) on the Start of Authority (SOA) record of to 15minutesD. Increase the Retry Interval value on the Start of Authority (SOA) record of to 15minutes.Answer: ASection: (none)Explanation/Reference:QUESTION 12Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com A member server named Server2 runs the DNS server role. The Server2 DNS service hosts multiplesecondary zones including . You need to reconfigure Server2 as a caching-only DNSserver. What should you do?A. Uninstall and reinstall the DNS service on Server2B. Change all the DNS zones on Server2 to stub zonesC. Disable and then enable the DNS service on Server2D. Delete the DNS zone domain from Server2. Restart the DNS service on Server2.Answer: ASection: (none)Explanation/Reference:QUESTION 13Your company has an Active Direcotry forest that has five domains. All DNS servers are domain controllers.You need to ensure that users from all domains are able to access a Web server named App1 by browsinghttp:/App1. What should you do?A. Configure and enable DFS-R on the Appl1 Web ServerB. Create a host (AAAA) record for the App1 Web server in the DNS zone for the forest root domainC. Create a zone named GlobalNames on a DNS server. Replicate the GlobalNames zone to all domaincontrollers int he forest. Create a host (A) record for the App1 Web server in the zoneD. Create a zone named LegacyWINS on a DNS server. Replicated the LegacyWINS zone to all domaincontrolelrs in the forest. Create a host (A) record for the Appl1 Web server in the zone.Answer: CSection: (none)Explanation/Reference:QUESTION 14Your company has a single Active Directory domain. All servers run Windows Server 2023. you install anadditional DNS server that runs Windows Server 2023. You need to delete the pointer record for the IPaddress 10.3.2.127. What should you do?A. Use DNS manager to delete the 127.in-addr.arpa zone.B. Run the dnscmd /RecordDelete 10.3.2.127 command at the command promptyC. Run the dnscmd /ZoneDelete 127.in-addr.arpa command at the command prompt.D. Run the dnscmd /RecordDelete 10.in-addr.arpa 127.2.3 PTR command at the command prompt.Answer: DSection: (none)Explanation/Reference:QUESTION 15Your company has an IPv6 network that has 25 segments. You deploy a server on the IPv6 network. Youneed to ensure that the server can communicate with all segments on the IPv6 network. What should youdo?A. Configure the IPv6 address as fd00:2b0:d0ff:fee9:4143/8B. Configure the IPv6 address as fe80:2b0:d0ff:fee9:4143/64C. Configure the IPv6 address as ff80:2b0:d0ff:fee9:4143/64D. Configure the IPv6 address as 0000:2b0:d0ff:fee9:4143/64Answer: ASection: (none)Explanation/Reference:QUESTION 16Your company has recently deployed a server that runs Windows Server 2023. The server has the IPinformation shown below.IP address 192.168.46.186Subnet mask: 255.255.255.192Default gateway: 192.168.46.1Users on remote subnets report that they are unable to connect to the server.You need to ensure all users are able to connect to the server.What should you do?A. Change the IP address to 192.168.46.129B. Change the IP address to 192.168.46.200C. Change the subnet mask to a 24-bit maskD. Change the subnet mask to a 27-bit mask.Answer: CSection: (none)Explanation/Reference:QUESTION 17Your company has a main office and a branch office. Users in the branch office report that they are unableto access shared resources in the main office. You discover that computers in the branch office have IPaddresses in the range of 169.254.x.x you need to ensure that computers can connect to shared resourcesin both the main office and the branch office. What should you do?A. Configure a DHCP relay agent on a member server in the main officeB. Configure a DHCP relay agent on a member server in the branch officeC. Configure the Broadcast Address DHCP server option to include the main offices DHCP server addressD. Configure the Resource Location Servers DHCP server option to include the main offices server ipaddresses.Answer: BSection: (none)Explanation/Reference:QUESTION 18Your network uses IPv4. You install a server that runs Windows Server 008 at a brach office. The server isconfigured with two network interfaces. You need to configure routing on the server at the branch office.Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)A. Install the Routing and Remote Access role.B. Run the netsh ras ip set access ALL commandC. Run the netsh interface ipv4 enable commandD. Enable the IPv4 Router Routing and Remote Access optionAnswer: ADSection: (none)Explanation/Reference:QUESTION 19Your company is designing its public network. The network will use an IPv4 range of 131.107.40.0/22. Thenetwork must be configured as shown in the following exhibit (pass4sure missing exhibit!).You need to configure subnets for each segment.Which network addresses should you assign?A. Segment A: 131.107.40.0/23 Segment B: 131.107.42.0/24 Segment C: 131.107.43.0/25 Segment D:131.107.43.128/27B. Segment A:131.107.40.0/25 Segment B: 131.107.40.128/26 Segment C: 131.107.43.192/27 SegmentD: 131.107.43.224/30C. Segment A: 131.107.40.0/23 Segment B: 131.107.41.0/24 Segment C: 131.107.41.128/25 Segment D:131.107.43.0/27D. Segment A: 131.107.40.128/23 Segment B: 131.107.43.0/24 Segment C: 131.107.44.0/25 Segment D:131.107.44.128/27Answer: ASection: (none)Explanation/Reference:QUESTION 20Your company has an Active Directory domain. A server named Server1 runs the Net