Unit 4 Quiz 4.1 - 4.6 Review

Which of the following IP addresses are Class C addresses? (Select two.)

- 192.15.5.55 - 223.16.5.0

Your network has been assigned the Class C network address of 200.78.151.0. Which of the following addresses can be assigned to hosts on your network? (Select three.)

- 200.78.151.111 - 200.78.151.12 - 200.78.151.252

You have a network address of 201.79.187.0 and a subnet mask of 255.255.255.192. Which of the following are valid host addresses for subnet 201.79.187.128?

- 201.79.187.132 - 201.79.187.189

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.)

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

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

- 255.255.0.0 - 169.254.0.0

You have two subnets on your private network, one with a 20-bit mask and another with a 22-bit mask. How many available host addresses are there on each subnet? (Select two.)

- 4094 - 1022

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

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

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

- IP Address - Subnet Mask

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

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

A network host has an IP address of 137.65.1.2 assigned to it. Given that the network uses the default classful subnet mask, what is this address's default routing prefix in CIDR subnet mask notation?

/16

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

What is the binary form for the following decimal IP address? 131.9.202.111

10000011.00001001.11001010.01101111

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

205.57.169.66

What is the decimal form of the following binary IP address? 11001110.00111010.10101010.01000011

206.58.170.67

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

68

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

A - maps an IPv4 (32-bit) DNS hostname to an IP address. This is the most common resource record type. PTR - maps an IP address to a hostname. In essence, it points to an A record. AAAA - maps an IPv6 (128-bit) DNS hostname to an IP address. CNAME - provides alternate names (or aliases) to hosts that already have a host record. MX - identifies servers that can be used to deliver email.

Which of the following works as an authoritative time device?

Atomic clock

Which organization is responsible for allocating public IP addresses?

IANA

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

Reservation

Which of the following are valid IPv4 addresses? (Select two.)

- 172.16.1.26 - 2.2.2.2

Your network has been assigned the Class B network address of 179.113.0.0. Which of the following addresses can be assigned to hosts on your network? (Select three.)

- 179.113.0.118 - 179.113.65.12 - 179.113.89.0

Which of the following IP addresses are Class B addresses? (Select three.)

- 190.65.2.0 - 129.0.0.0 - 132.12.0.0

Which of the following IP addresses have a default subnet mask of 255.255.0.0? (Select two.)

- 191.168.2.15 - 129.0.0.1

Which of the following terms are often synonymous with or made possible with CIDR? (Select two.)

- Classless - VLSM

You have a small network, as shown in the exhibit. You've configured the IP address and subnet mask on Wrk1. You want to be able to use Wrk1 to browse the internet to connect to sites like www.cisco.com. Which other parameters are required on the workstation? (Select two.)

- Default gateway - DNS server address

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

- Discover - Offer

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

Dynamic DNS

Which of the following are private IP addresses? (Select two.)

- 10.244.12.16 - 192.168.250.11

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

11000000.10101000.00000001.00000001

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

67

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.

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

HOSTS file

You have a workstation that's connected to a small branch network with a single switch. The network doesn't have any routers and isn't connected to the internet. What are the minimum configuration parameters required for the workstation to be able to communicate with all the hosts on the network?

IP address and subnet mask

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

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

Jitter

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 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

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.

Which of the following time standards does NTP use?

UTC

Which stratum level does the authoritative time device fall under?

0

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

Assuming that the network is indicated by the default portion of the IP address, which three of the following IP addresses belong to the Class A network 114.0.0.0? (Select three.)

- 114.58.12.0 - 114.122.66.12 - 114.0.0.15

You have a network address of 132.66.0.0 and a subnet mask of 255.255.224.0. Which of the following are valid subnet addresses? (Select two.)

- 132.66.192.0 - 132.66.96.0

Which of the following are valid IP addresses? (Select three.)

- 172.17.1.3 - 224.0.0.1 - 137.65.1.1

You've decided to use a subnet mask of 255.255.192.0 on the 172.17.0.0 network to create four separate subnets. Which network IDs will be assigned to these subnets in this configuration? (Select two.)

- 172.17.128.0 - 172.17.0.0

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.

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: Ethernet adapter Local Area Connection 1: Description . . . . . . . . . . . : Intel(R) Ethernet Connection Physical Address. . . . . . . . . : 02-00-4C-4F-3F-50 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Autoconfiguration IPv4 Address. . : 169.254.25.129 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : Which of the following statements are true? (Select two).

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

Drag each binary subnet mask on the left to its appropriate decimal equivalent on the right.

11111111.11111111.00000000.00000000 - 255.255.0.0 11111111.00000000.00000000.00000000 - 255.0.0.0 11111111.11100000.00000000.00000000 - 255.224.0.0 11111111.11111111.11111111.10000000 - 255.255.255.128 11111111.11111111.11111111.11111100 - 255.255.255.252

Which of the following ports does NTP run on?

123

A host on a network has an IP address of 129.11.99.78 with the default subnet mask. How would you identify the address and mask using CIDR notation?

129.11.99.78/16

In an IP addressing scheme that uses default subnet masks, which of the following IP addresses can you assign to a host?

132.70.254.15

Which of the following IP addresses is a valid IP address for a host on a public network?

142.15.6.1

Which of the following is the highest stratum level allowed?

15

Which of the following is the first IP address that you can assign to hosts on the 166.70.0.0 network with the default subnet mask?

166.70.0.1

Which of the following is the last IP address that you can assign to hosts on the 166.70.0.0 network with the default subnet mask?

166.70.255.254

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

A workstation has been assigned the following IP addressing information: • IP address: 192.168.1.26 • Subnet mask: 255.255.255.0 • Default gateway: 192.168.1.254 • DNS server: 192.168.1.1 Given this information, what is this workstation's network IP address?

192.168.1.0

Which of the following is the last IP address that you can assign to hosts on the 211.70.0.0 network with the default subnet mask?

211.70.0.254

You've been told to assign the IP address 21.155.67.188 to a host on the network using the default subnet mask. Which mask should you use?

255.0.0.0

You're configuring the IP address for a host and have been asked to use the address 192.160.99.110/16. Which subnet mask value would you use?

255.255.0.0

What is the default subnet mask for the IP address 203.111.3.3?

255.255.255.0

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

Consider the following IP addresses: 1. 124.77.8.5 2. 131.11.0.9 3. 190.66.250.10 4. 196.5.89.44 Which list represents the IP address class of each listed IP address?

Class A, Class B, Class B, Class C

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0. Which of the following describes this address type?

Classless

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

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

GIADDR

You've configured your organization's DHCP server to dynamically assign IP addresses to DHCP clients using a lease duration of four days. You're using a Windows server for DHCP, and the default lease time is eight days. What impact, if any, will this have on the network?

Increased network traffic

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.

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 will not function properly if there is a time mismatch error?

Security certificates

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

Sends a DHCP Discover packet

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

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 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

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

Subnets divide an IP network address into multiple network addresses.

You manage a subnet that uses the subnet address 198.162.1.0/23. Which of the following BEST describes how addressing is configured for this subnet?

Supernetting

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.

You have a small network that's connected to the internet, as shown in the exhibit. You need to configure the default gateway address on Wrk1 so that it can communicate with hosts on the internet. Which address would you use for the default gateway address?

The IP address assigned to Fa0/0 on Router1.

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

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

com

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