CIT 160 Chapter 4 IP addressing

Which stratum level does the authoritative time device fall under?

0

Consider the following output from a dig command run on a Linux system. ; <<>> DiG 8.2 <<>> westsim111.com;;res options:init recurs defnam dnsrch;;got answer:;;->>HEADER<<-opcode:QUERY, status: NOERROR, id:4;;flags: qr rd ra; QUERY:1, ANSWER:1, AUTHORITY:2, ADDITIONAL:0;;QUERY SECTION:;; westsim111.com, type = A, class = IN;;ANSWER SECTION:westsim111.com. 7h33m IN A 76.141.43.129;;AUTHORITY SECTION:westsim111.com. 7h33m IN NS dns1.deriatct111.com.westsim111.com. 7h33m IN NS dns2.deriatct222.com.;;Total query time: 78 msec;;FROM: localhost.localdomain to SERVER:default -- 202.64.49.150;;WHEN: Tue Feb 16 23:21:24 2005;;MSG SIZE sent: 30 rcvd:103 What is the IP address of the DNS server that performed this name resolution?

202.64.49.150

What is the decimal form of the following binary IP address? 11001101.00111001.10101001.01000010

205.57.169.66

Which network address and subnet mask does APIPA use? (Select two.)

255.255.0.0 169.254.0.0

Which of the following are valid IPv6 addresses? (Select two.)

6384:1319:7700:7631:446A:5511:8940:2552 141:0:0:0:15:0:0:1

Your network uses a network address of 137.65.0.0 with a subnet mask of 255.255.0.0. How many IP addresses are available to assign to network hosts on this network?

65534

Which port is a DHCP Discover packet sent out on when a device first connects to a network?

67

Which of the following IPv6 addresses is equivalent to the IPv4 loopback address of 127.0.0.1?

::1

Which of the following allows the same IPv6 address to be assigned to multiple interfaces?

Anycast

Which of the following gives the same IP address to multiple servers and manually defines different routes on an IPv4 network?

BGP

You need to design an IPv6 addressing scheme for your network. The following are key requirements for your design: Infrastructure hosts, such as routers and servers, are assigned static interface IDs. However, workstations, notebooks, tablets, and phones are assigned interface IDs dynamically. Internet access must be available to all hosts through an ISP. Site-to-site WAN connections are created using leased lines. Which type of IPv6 addressing is most appropriate for hosts on this network?

Global unicast addressing

Which of the following address types shares multiple hosts and groups of computers that receive the same data stream?

Mulitcast

CorpServ is a small company with 14 client systems and a network printer. Because there are only a limited number of network systems, you decide to use APIPA addressing. With APIPA configured, all the systems are able to communicate with each other, but you're having trouble configuring internet access. What is the MOST LIKELY cause of the problem?

Private addresses cannot directly communicate with hosts outside the local subnet.

What is the process of a DNS server asking other DNS servers to perform name resolution known as?

Recursive lookup

You are the network administrator for a large hospital. One of your users, Suzie, calls you stating that she is unable to access any network resources. After some initial troubleshooting, you realize that her computer is using the IP address 169.254.0.52. You've confirmed that the network's physical connection is connected properly. Which of the following should you do next?

Renew the IP address.

Which of the following DHCP scope options assigns a static IP configuration to a device using that device's MAC address?

Reservation

After you install a new DHCP server on your network, you need to verify that the network devices are receiving IP addressing via DHCP. You reboot a Windows 10 client system and, using the ipconfig /all command, receive the following information:

The client system is configured to use DHCP The client system is unable to reach the DHCP server.

Which of the following can you append to the end of the dig command to run a query for all the records in the zone?

-axfr

A host has an address of 100.55.177.99/16. Which of the following is the broadcast address for the subnet?

100.55.255.255 (broadcast address is last ip address in range)

What is the correct binary form of the decimal IP address 192.168.1.1?

11000000.10101000.00000001.00000001

Which of the following ports does NTP run on?

123

Which of the following is the highest stratum level allowed?

15

Which of the following IP address ranges is reserved for Automatic Private IP Addressing (APIPA)?

169.254.0.1 - 169.254.255.254

Which of the following is a valid APIPA address?

169.254.32.50

Your network has a network address of 172.17.0.0 with a subnet mask of 255.255.255.0. Which of the following are true concerning this network? (Select two.)

172.17.0.255 is the network broadcast address. 254 IP addresses can be assigned to host devices.

Based on the address prefix for each IPv6 address on the right, identify the address type from the list on the left. (Addresses may not represent actual addresses used in production.)

2001:6789:9078::ABCE:AFFF:FE98:0001 Global unicast FD00::8907:FF:FE76:ABC Unique Local FEA0::AB89:9FF:FE77:1234 Link -local FF00:98BD:6532::1 Multicast FF02::1:2 Multicast

Which port does the relay agent use when it sends DHCP information back to the client?

68

You manage a network with two locations (Portland and Seattle). Both locations are connected to the internet. The computers in both locations are configured to use IPv6. You'd like to implement an IPv6 solution to meet the following requirements: Hosts in each location should be able to use IPv6 to communicate with hosts in the other location through the IPv4 internet. You want to use a site-to-site tunneling method instead of a host-to-host tunneling method. Which IPv6 solution should you use?

6to4 tunneling

Which of the following devices is MOST LIKELY to be assigned a public IP address?

A router that connects your home network to the internet.

Which protocol is used by a device to ensure that an APIPA address is not already in use on the network?

ARP

You administer a network with Windows Server 2016, UNIX servers, and Windows 10 Professional, Windows 8, and Macintosh clients. A Windows 8 computer user calls you one day and says that he is unable to access resources on the network. You type ipconfig on the user's computer and receive the following output: 0 Ethernet adapter: IP address. . . . . . . . . : 169.254.1.17Subnet Mask . . . . . . . . : 255.255.0.0Default Gateway . . . . . . : You also check your NIC and see that the link light is on. What might the problem be in this scenario?

An unavailable DHCP server

You want to implement a protocol on your network that allows computers to find a host's IP address from a logical name. Which protocol should you implement?

DNS

Which of the following BEST describes the special MAC address that multicast traffic frames are sent to?

Begins with 01-00-5E and ends with a form of the IP multicast group address

You are the network administrator for a small consulting firm. The office network consists of 30 computers, one server, two network printers, and a switch. Due to security concerns, there is no wireless network available in the office. One of your users, Bob, travels to client sites and is generally not in the office. When Bob goes to client sites, he typically just connects to their wireless networks. When he's in the office, Bob connects his laptop to the network with an Ethernet cable. You need to make sure that Bob's laptop is setup so that when he plugs the Ethernet cable into his laptop, no further configuration is needed. Which of the following would be the BEST option to achieve this?

Configure an alternate IP configuration.

You have a TCP/IP network with 50 hosts. There have been inconsistent communication problems between these hosts. You run a protocol analyzer and discover that two of them have the same IP address assigned. Which protocol can you implement on your network to help prevent problems such as this?

DHCP

You have a network with 50 workstations. You want to automatically configure the workstations with the IP address, subnet mask, and default gateway values. Which device should you use?

DHCP server

You are a network technician for a small consulting firm. Many users have reported issues with accessing the network. After some initial troubleshooting, you discover that devices are not receiving their IP configurations. You look into the issue and discover that the network is being targeted by a denial-of-service attack. Which of the following is your network MOST likely experiencing?

DHCP starvation attack

You need to enable hosts on your network to find the IP address of logical names, such as srv1.myserver.com. Which device should you use?

DNS server

You are troubleshooting a network connectivity issue on a Unix system. You're able to connect to remote systems by using their IP address, but you're unable to connect using the hostname. You check the TCP/IP configuration and notice that a DNS server IP address is configured. You decide to run some manual resolution queries to ensure that the communication between the Unix system and the DNS server are working correctly. Which utilities can you use to do this? (Select two.)

Dig Nslookup

When a device renews its DHCP lease, which two steps in the DHCP process are skipped?

Discover Offer

Netstat-r

Displays the routing table

You are the network administrator for a consulting firm. Your network consists of: 40 desktop computers Two servers Three network switches Two network printers You've been alerted to an issue with two desktop computers that are having problems communicating with the network. When only one computer is on, everything is fine. But when both computers are connected, the network connection is randomly dropped or interrupted. Which of the following would be the MOST likely cause for this?

Duplicate MAC Addresses

Which of the following services automatically creates and deletes host records when an IP address lease is created or released?

Dynamic DNS

If dynamic DNS is in use, which of the following events causes a dynamic update of the host records? (Select two.)

Enter the ipconfig /registerdns command on a workstation. Renew the DHCP server's IP address lease.

Which of the following IPv6 addresses is used by a host to contact a DHCP server?

FF02::1:2

You are the network administrator for a small consulting firm. The firm has recently rolled out a new intranet site, and you are responsible for configuring the DNS. You are able to connect to the intranet site by using the IP address, but you cannot connect when you use the hostname. Which of the following do you need to configure so that the site can be accessed with the hostname?

Forward lookup zone

Which of the following does the DHCP relay agent use to tell the DHCP server which pool of addresses to use?

GIADDR

Which of the following is the first place a computer looks at during the name resolution process?

HOSTS file

Which of the following are characteristics of Teredo tunneling? (Select three.)

Has dual-stack hosts Can be used to send data over the internet Is configured between individual hosts

Which organization is responsible for allocating public IP addresses?

IANA

Which protocol does an IP host use to inform a router that it wants to receive specific multicast frames?

IGMP

Which of the following needs to be configured when a device receives its IP configuration from APIPA?

IP address Subnet Mask

You have a small network with a single subnet connected to the internet, as shown in the exhibit. The router has been assigned the two addresses shown. You need to manually configure the workstation to connect to the network. The workstation should use RouterA as the default gateway and DNS1 as the DNS server address. From the drop-down menu options, select the appropriate parameters to configure the workstation's TCP/IP settings.

IP address 192.168.12.46 Subnet mask 255.255.255.240 Default gateway 192.168.12.34 DNS server 192.162.1.22

Which of the following best describes the purpose of using subnets?

Subnets divide an IP network address into multiple network addresses.

Which of the following would a device use to receive NTP configuration from a NTP server that's located on a different network?

IP helper

You recently created a new network segment for the Development department. Because the hosts are now on a different network segment, they can no longer contact the DHCP server. Both network segments are connected via a Cisco router. Which of the following would be the BEST action to take to fix the problem?

Implement an IP helper address on the router.

You manage a network that has multiple internal subnets. You connect a workstation to the 192.168.1.0/24 subnet. This workstation can communicate with some hosts on the private network, but not with other hosts. You run ipconfig /all and see the following: Ethernet adapter Local Area Connection:Connection-specific DNS Suffix . : mydomain.localDescription . . . . . . . : Broadcom network adapterPhysical Address. . . . . . : 00-AA-BB-CC-74-EFDHCP Enabled . . . . . . . : NoAutoconfiguration Enabled. . . : YesIPv4 Address . . . . . . . : 192.168.1.102(Preferred)Subnet Mask . . . . . . . : 255.255.255.0Default Gateway. . . . . . . . . : 192.168.2.1DNS Servers. . . . . . . . . . . : 192.168.2.20 What is the most likely cause of the problem?

Incorrect default gateway

A user reports that they cannot browse to a specific website on the internet. From the user's computer, a computer tech finds that a ping test to the web server succeeds. A traceroute test shows 17 hops to the destination web server. What is the MOST likely cause of the problem?

Incorrect DNS server address

You are a network technician for a small consulting firm. One of your users is complaining that they are unable to connect to the local intranet site. After some troubleshooting, you've determined that the intranet site can be connected to by using the IP address but not the hostname. Which of the following would be the MOST likely reason for this?

Incorrect DNS settings

You manage a network that has multiple internal subnets. You connect a workstation to the 192.168.1.0/24 subnet. This workstation cannot communicate with any other host on the network. You run ipconfig /all and see the following: Ethernet adapter Local Area Connection:Connection-specific DNS Suffix. : mydomain.localDescription . . . . . . . : Broadcom network adapterPhysical Address . . . . . : 00-AA-BB-CC-74-EFDHCP Enabled. . . . . . . : NoAutoconfiguration Enabled . . : YesIPv4 Address. . . . . . . : 192.168.2.102(Preferred)Subnet Mask . . . . . . . : 255.255.255.0Default Gateway. . . . . . : 192.168.1.1DNS Servers . . . . . . . : 192.168.2.20 What is the MOST likely cause of the problem?

Incorrect IP address

You manage a network that has multiple internal subnets. You connect a workstation to the 192.168.1.0/24 subnet. This workstation can communicate with some hosts on the private network, but not with other hosts. You run ipconfig /all and see the following: Ethernet adapter Local Area Connection:Connection-specific DNS Suffix . : mydomain.localDescription . . . . . . . : Broadcom network adapterPhysical Address. . . . . . : 00-AA-BB-CC-74-EFDHCP Enabled . . . . . . . : NoAutoconfiguration Enabled. . . : YesIPv4 Address . . . . . . . : 192.168.1.102(Preferred)Subnet Mask. . . . . . . . : 255.255.0.0Default Gateway . . . . . . : 192.168.1.1DNS Servers . . . . . . . : 192.168.1.20192.168.1.27 What is the MOST likely cause of the problem? Answer Incorrect DNS server address Incorrect IP address Incorrect default gateway Correct Answer: Incorrect subnet mask

Incorrect subnet mask

You've configured your organization's DHCP server to dynamically assign IP addresses and changed the default lease time from eight to four days. What impact, if any, will this have on the network?

Increased network traffic

Which of the following statements about Dynamic Host Configuration Protocol (DHCP) are true? (Select two.)

It can deliver other configuration information in addition to IP addresses. A DHCP server assigns addresses to requesting hosts.

You're troubleshooting an IP addressing issue, and you issue a command to view the system's TCP/IP configuration. The command you use produces the following output: fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500inet6 fe80::2a0:83ff:fe30:57a%fxp0 prefixlen 64 scopeid 0x1inet 192.168.1.235 netmask 0xfffffc00 broadcast 255.255.255.255ether 00:a0:83:30:05:7amedia: Ethernet autoselect (100baseTX <full-duplex>)status: activelo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384inet6 ::1 prefixlen 128inet6 fe80::1%lo0 prefixlen 64 scopeid 0x7inet 127.0.0.1 netmask 0xff000000 Which of the following operating systems are you working on?

Linux

You have a server at work with a custom application installed. Connections to the server that use the custom application must use IPv6, but the server is currently running IPv4. You're the only person who connects to the server, and you always use your Linux laptop for the connection. Your laptop supports both IPv4 and IPv6, but the rest of your company network runs only IPv4. You need a cost-effective solution to allow your laptop to connect to the server. Your solution must also support communication through NAT servers. Which client software should you use to connect to the server?

Miredo

Which address type do people use to support video conference calls consisting of multiple participants?

Multicast

Which type of address is the IP address 232.111.255.250?

Multicast

Which of the following best describes NTP efficiency?

One packet per minute is necessary to sync two machines to an accuracy of within a millisecond of one another.

Listed below are several DNS record types. Match each record type on the left with its function on the right.

Points a hostname to an IPv4 address -A Provides alternate names to hosts that already have a host record -CNAME Points an IP address to a hostname -PTR Points a hostname to an IPv6 address -AAAA Identifies servers that can be used to deliver mail -MX

You are a network technician for a small consulting firm. Many users have reported issues with accessing the network. After some initial troubleshooting, you discover that many devices have the same IP address assigned or incorrect IP configurations. Which of the following would be the MOST likely cause for this?

Rogue DHCP server

You have a Windows Server 2016 system that you want to use as a DHCP relay agent. Which Windows Server 2016 service would you use to do this?

Routing and Remote Access

Incorrect Which of the following will not function properly if there is a time mismatch

Security certificates

What is the first thing a device does when it connects to a network?

Sends a DHCP Discover packet

You are configuring the DHCP relay agent role on a Windows server. Which of the following is a required step for the configuration?

Specify which server network interface the agent listens on for DHCP messages.

You manage a network that uses IPv6 addressing. When clients connect devices to the network, they generate an interface ID and use NDP to learn the subnet prefix and default gateway. Which IPv6 address assignment method is being used?

Stateless autoconfiguration

You have a small network with three subnets, as shown in the exhibit. IP addresses for each router interface are also indicated in the exhibit. How many IP addresses that you can assign to hosts remain on each subnet?

SubnetA = 125, SubnetB = 0, SubnetC = 13

You are the network administrator for a small consulting firm. Users are complaining that they are unable to reach network resources. After some troubleshooting, you've confirmed that the DHCP server is down. Your network devices should be receiving an APIPA address so that they can at least communicate on the internal network, but many devices are not receiving this address. Which of the following is the MOST likely reason the devices are not receiving their APIPA addresses?

The DHCP lease has not expired.

You are the network administrator for a large hospital. One of your users, Suzie, calls you stating that she is unable to access any network resources. After some initial troubleshooting, you realize that her computer is using the IP address 169.254.0.52. You've performed the following troubleshooting steps so far: Verified physical network connection Attempted to renew the IP address Discovered other devices are experiencing the same issue Which of the following is the MOST likely cause for Suzie's issue?

The DHCP server is misconfigured or down.

Which IP address do broadcast messages use?

The last valid IP address on the subnet

On a typical network, what happens if a client attempts to receive DHCP configuration from a DHCP server that's located on a different subnet?

The router drops the DHCP request.

What is it called when a system's clock begins to be off by a few seconds or even minutes?

Time drift

You are the network administrator for a consulting firm. A website that users on your network visit has a habit of frequently changing its IP address. When these IP mappings change, users are unable to connect until you clear the DNS cache. Which of the following settings should you configure so that the cache does not need to be manually cleared every time?

Time to live

Which of the following protocols does DHCP use when it sends out IP configuration?

UDP

Which of the following time standards does NTP use?

UTC

Which type of address identifies which single host to send a packet to?

Unicast

Which type of address is the IP address 198.162.12.254/24?

Unicast

Consider the following IPv6 address: FD01:0001:0001:005::7/64 Drag the component parts of this address on the left to the corresponding descriptions on the right. (Not all descriptions on the right have corresponding components on the left.) Global routing prefix

Unique local unicast prefix: FD Global routing prefix: FD01:0001:0001:005 Subnet ID: 005 Interface ID: ::7 Prefix length: /64

Which of the following strategies do we use to prevent duplicate IP addresses from being used on a network? (Select two.)

Use Automatic Private IP Addressing (APIPA). Install a DHCP server on the network.

Which of the following works as an authoritative time device?

atomic clock

Which of the following is the top-level domain in www.testout.com.'s fully qualified domain name (FQDN)?

com

Due to wide network expansion, you've decided to upgrade your network by configuring a DHCP server. The network uses Linux, Windows, and Mac OS X client systems. You configure the server to distribute IP addresses from 192.168.2.1 to 192.168.2.100. You use the subnet mask of 255.255.255.0. After you make all the setting changes on the DHCP server, you reboot each client system, but they are not able to obtain an IP address from the DHCP server. Which of the following explains the failure?

You must configure the clients to obtain IP addressing from a DHCP server.

Which TCP/IP utility gives you the following output? Interface: 192.168.4.101 on Interface 0x3Internet Address Physical Address Type192.168.1.23 00-d1-b6-b7-c2-af dynamic

arp

Which of the following tools would you use to view the MAC addresses associated with IP addresses that the local workstation has contacted recently?

arp

You've been called in to troubleshoot a connectivity problem on a newly installed Windows Server system. The system is operating well and is able to communicate with other systems on the local network. However, it's unable to access any systems on other segments of the corporate network. You suspect that the system's default gateway parameter hasn't been configured or may be configured incorrectly. Which of the following utilities are you MOST likely to use to view the system's default gateway information?

ipconfig

Consider the following output. ;; res options: init recurs defnam dnsrch;;got answer:;;->>HEADER<<-opcode:QUERY, status; NOERROR,id:4;;flags: qr rd ra; QUERY:1, ANSWER:1, AUTHORITY:2, ADDITIONAL:0;;QUERY SECTION:;; westsim111.com, type = A, class = IN;;ANSWER SECTION:westsim111.com. 7h33m IN A 76.141.43.129;;AUTHORITY SECTION:westsim111.com. 7h33m IN NS dns1.deriatct111.com.westsim111.com. 7h33m IN NS dns2.deriatct222.com.;;Total query time: 78 msec;;FROM: localhost.localdomain to SERVER: default -- 202.64.49.150;;WHEN: Tue Feb 16 23:21:24 2005;;MSG SIZE sent: 30 rcvd: 103 Which of the following utilities produced this output?

dig

You are using Linux and need to perform a reverse lookup of the IP address 10.0.0.3. Which command would you use to accomplish this?

dig -x 10.0.0.3

You need to configure a Cisco RFC 1542-compliant router to forward any received DHCP frames to the appropriate subnet. The remote DHCP server's address is 172.16.30.1. Which of the following commands would you use to configure the router?

ip helper-address 172.16.30.1

Which of the following commands do you use to clear the local DNS cache?

ipconfig /flushdns

You are a network technician for a small consulting firm. One of your responsibilities is to manage the intranet site and configuration. You recently had to update the site's IP mapping due to a server upgrade. A user is having an issue with connecting to the intranet site now. When the user attempts to connect through their web browser, they receive a message that the page cannot be displayed. If you type in the IP address, the page loads fine. Which of the following commands should you use to fix this issue?

ipconfig /flushdns

Which two commands do you use to force a new IP configuration?

ipconfig /renew ipconfig /release

What are the small, rapid variations in a system clock called?

jitter

Examine the following output: Active ConnectionsProto Local Address Foreign Address StateTCP SERVER1:1036 localhost:4832 TIME_WAITTCP SERVER1:4798 localhost:1032 TIME_WAITTCP SERVER1:1258 pool-141-150-16-231.mad.east.ttr:24076 CLOSE_WAITTCP SERVER1:2150 cpe-66-67-225-118.roc.res.rr.com:14100 ESTABLISHEDTCP SERVER1:268 C872c-032.cpe.net.cale.rers.com:46360 ESTABLISHEDTCP SERVER1:2995 ip68-97-96-186.ok.ok.cox.net:23135 ESTABLISHED Which of the following utilities produced this output?

netstat

Your computer is sharing information with a remote computer using the TCP/IP protocol. Suddenly, the connection stops working and appears to hang. Which command can you use to check the connection?

netstat

Examine the following output: Server: to.xct.mirrorxhq.netAddress: 209.53.4.130Name: westxsim.comAddress: 64.78.193.84 Which of the following utilities produced this output?

nslookup

Mary calls to tell you that she can't connect to an intranet server called WebSrv1. From her computer, you ping the server's IP address. The ping test is successful. Which tool would you use on her workstation next to troubleshoot the problem?

nslookup

Examine the following output: Reply from 64.78.193.84: bytes=32 time=86ms TTL=115Reply from 64.78.193.84: bytes=32 time=43ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=47ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=73ms TTL=115Reply from 64.78.193.84: bytes=32 time=46ms

ping

You are the network administrator for a small consulting firm. You've set up an NTP server to manage the time across all the machines in the network. You have a computer that's experiencing a slight time drift of just a few seconds. Which time correction should you use to fix the system's clock?

slew

While working on a Linux server, you're unable to connect to your Windows Server system across the internet. You're able to ping the default gateway on your own network, so you suspect that the problem lies outside of the local network. Which utility would you use to track the route a packet takes as it crosses the network?

traceroute

Which of the following commands should you use to check the route a packet takes between a workstation and the DNS server?

tracert