Network+ Guide To Networks 7Th Capstone

Front 1

Your 100Base-T network is wired following the TIA/EIA 568B standard. As you make your own patch cable, which wires do you crimp into pins 1 and 2 of the RJ-45 connector?

Back 1

White with orange stripe and orange

Front 2

Your organization contracts with a cloud computing company to store all of its data. The company promises 99.99% uptime. If it lives up to its claims, for how many minutes each year can you expect your data to be unavailable?

Back 2

Approximately 52 minutes

Front 3

What is the default subnet mask for the following IP address: 154.13.44.87?

Back 3

255.255.0.0

Front 4

You have just rearranged the access points on your small office network. Now a group of employees complains that they cannot reliably get their workstations to connect with a new 802.11ac access point. You have confirmed that the workstations are using the correct SSID, security type, and passphrase. You have also confirmed that the access point is on and functioning properly because when you stand in the computer room where it’s located, you can connect to the access point from your smartphone. Which of the following is likely preventing the other users’ workstations from associating with the new access point?

Back 4

The workstations are located beyond the access point’s range.

Front 5

An implementation of multiple 5-GHz APs that talk to each other in order to obtain 802.11n-type speeds is accomplished with what unofficial wireless standard?

Back 5

802.11a-ht

Front 6

Which of the following utilities could you use to log on to a UNIX host?

Back 6

SSH

Front 7

You have been asked to provide a connectivity solution for a shuttle-bus system at a large theme park. The owners of the park want a wireless network that reaches all parking lots and drop-off points throughout the park’s 2.4-square mile campus. Each shuttle is to be equipped with a wireless antenna to provide real-time pick-up and drop-off directives to each driver. The park owners plan to install their own base station antennas in order to have complete control of the amount and type of traffic traversing the WAN, but they are very concerned about the cost of equipment installation. Considering the needs and priorities of the theme park owners, what is the best solution for this client?

Back 7

WiMAX

Front 8

Which of the following wireless security techniques uses RADIUS and AES?

Back 8

WPA2-Enterprise

Front 9

At what layer of the TCP/IP model is routing information interpreted?

Back 9

Network layer

Front 10

Which of the following protocols encapsulates data for transmission over VPNs?

Back 10

L2TP

Front 11

Ethernet and ATM both specify Data Link layer framing techniques. How do they differ?

Back 11

Ethernet uses variably sized packets, whereas ATM uses fixed-sized cells.

Front 12

You are creating a new Linux server as a virtual machine on your Windows 8.1 workstation. Which of the following commands will tell you the IP address that is assigned to your virtual server?

Back 12

ifconfig –a at the Linux server’s shell prompt

Front 13

How do most modern FTP servers prevent FTP bounce attacks?

Back 13

They will not issue data to hosts other than the client that originated the request.

Front 14

Which of the following standards describes a security technique, often used on wireless networks, in which a port is prevented from receiving traffic until the transmitter’s credentials are verified by an authentication server?

Back 14

EAPoL

Front 15

You are setting up a new Windows 8.1 client to connect with your LAN, which relies on DHCP. You made certain that the client has the TCP/IP protocol installed and is bound to its NIC. Which of the following must you do next to ensure that the client obtains correct TCP/IP information via DHCP?

Back 15

Nothing; in Windows 8.1, the DHCP option is selected by default, and the client will obtain IP addressing information upon connecting to the network.

Front 16

You are part of a team participating in a posture assessment of your company’s WAN. Which of the following tools or strategies will help you gain a broad understanding of your network’s vulnerabilities?

Back 16

Nmap

Front 17

To ensure that your private network is always protected, you decide to install three redundant firewalls. Which of the following would allow you to assign the same IP address to all three?

Back 17

CARP

Front 18

You have purchased an access point capable of exchanging data via the 802.11n or 802.11ac wireless standard. According to these standards, what is the maximum distance, in meters, from the access point that wireless stations can travel and still reliably exchange data with the access point?

Back 18

400

Front 19

Which of the following routing protocols has the poorest convergence time?

Back 19

RIP

Front 20

Which of the following is often used to secure data traveling over VPNs that use L2TP?

Back 20

IPsec

Front 21

While troubleshooting a workstation connectivity problem, you type the following command: ping 127.0.0.1. The response indicates that the test failed. What can you determine about that workstation?

Back 21

Its TCP/IP stack is not installed properly.

Front 22

A user watching a YouTube video over the Internet is an example of what type of communication?

Back 22

Unicast

Front 23

Using RIPv2, what is the maximum number of hops a packet can take between its source and its destination?

Back 23

15

Front 24

Which two of the following routing protocols offer fast convergence time and can be used on interior or border routers?

Back 24

1) OSPF

2) EIGRP

Front 25

What protocol is used to transfer mail between a Sendmail server and a Microsoft Exchange server?

Back 25

SMTP

Front 26

Recently, your company’s WAN experienced a disabling DDoS attack. Which of the following devices could detect such an attack and prevent it from affecting your network in the future?

Back 26

NIPS

Front 27

Which signaling protocol is modeled after HTTP and is limited to IP networks?

Back 27

SIP

Front 28

Which one of the following media is most resistant to EMI?

Back 28

Fiber-optic cable

Front 29

You are a network administrator for a WAN that connects two regional insurance company offices—the main office and a satellite office—to each other by a T-3. The main office is also connected to the Internet using a T-3. This T-3 provides Internet access for both offices. To ensure that your private network is not compromised by unauthorized access through the Internet connection, you install a firewall between the main office and the Internet. Shortly thereafter, users in your satellite office complain that they cannot access the file server in the main office, but users in the main office can still access the Internet. What two things should you check?

Back 29

1) Whether the firewall is placed in the appropriate location on the network

2) Whether the firewall has been configured to allow access from IP addresses in the satellite office

Front 30

Suppose your WAN contains a segment that relies on the l0GBase-EW standard. Which of the following transmission technologies might it use?

Back 30

SONET

Front 31

Suppose you have created six subnets on your network, which leases a group of Class C IPv4 addresses. What subnet mask must you specify in your clients’ configurations to adhere to your subnetting scheme?

Back 31

255.255.255.224

Front 32

A colleague calls you for help with his home office Internet connection. He is using an 802.11n access point/router connected to a DSL modem. The access point/router’s private IP address is 192.168.1.1 and it has been assigned an Internet routable IP address of 76.83.124.35. Your friend cannot connect to any resources on the Internet using his new Windows workstation. You ask him to run the ipconfig command and read the results to you. He says his workstation’s IP address is 192.168.1.3, the subnet mask is 255.255.255.0, and the default gateway address is 192.168.1.10. What do you advise him to do next?

Back 32

Change his gateway address.

Front 33

You are configuring a connection between two backbone switches, and you want to make sure the connection doesn’t fail or become overwhelmed by heavy traffic. Which of the following techniques would help you achieve both aims?

Back 33

NIC teaming

Front 34

Which of the following does not accurately describe TACACS+ in comparison to RADIUS?

Back 34

TACACS+ operates as a software application on a remote access server.

Front 35

Which of the following makes use of channel bonding to maximize throughput?

Back 35

802.11n

Front 36

Your company is experiencing a growth spurt and is ready to invest in a more sophisticated disaster recovery plan. Currently the only backup plan consists of a few spare computers in a storage closet, with data on the servers duplicated weekly to an off-site backup service. The owners of the company have committed to acquiring additional servers to duplicate critical servers in their current network, and they want the servers to be configured identically to the servers now in use. The new servers will be stored at an off-site data center, and updated every time the on-site servers are updated. What type of disaster recovery site is your company creating?

Back 36

Warm site

Front 37

How does STP (Spanning Tree Protocol) prevent or stop broadcast storms?

Back 37

It enables switches to calculate paths that avoid potential loops and artificially blocks the links that would complete a loop.

Front 38

The software on a firewall you recently installed on your network examines each incoming packet. Based on a set of criteria, including source IP address, source and destination ports, and protocols, it blocks or allows traffic. What type of system is this? (Choose all that apply.)

Back 38

1) Stateless firewall

2) Packet-filtering firewall

Front 39

What kind of management does SSH provide for a switch?

Back 39

In-band management

Front 40

What is the function of protocols and services at the Network layer of the OSI model?

Back 40

To add logical addresses and properly route data

Front 41

Which of the following ports would be used during a domain name lookup?

Back 41

53

Front 42

A virtual PBX would provide your organization with which of the following services?

Back 42

VoIP call connection

Front 43

If a Windows workstation is configured to use DHCP, but cannot find a DHCP server, it will assign itself an address and subnet mask. Which of the following IPv4 addresses might it assign itself?

Back 43

169.254.1.120

Front 44

Which of the following functions does SIP perform on a VoIP network? (Choose all that apply.)

Back 44

1) Determines the locations of endpoints

2) Establishes sessions between endpoints

Front 45

Which of the following is a valid MAC address?

Back 45

C3:00:50:00:FF:FF

Front 46

While attempting to load a video to YouTube.com, the operation freezes and the upload fails. Which characteristic of the connection is being affected?

Back 46

Goodput

Front 47

Which two of the following devices operate only at the Physical layer of the OSI model?

Back 47

1) Hub

2) Repeater

Front 48

Your organization has just ordered its first T-1 connection to the Internet. Prior to that, your organization relied on a DSL connection. Which of the following devices must you now have that your DSL connection didn’t require?

Back 48

CSU/DSU

Front 49

If an organization follows structured cabling standards, where would its demarc be located?

Back 49

Entrance facility

Front 50

Your organization is reassessing its WAN connections to determine how much more bandwidth it will need to purchase in the next five years. As a network administrator, which of the following data can you share that will help management make the right decision?

Back 50

Baselines

Front 51

What is the purpose of an AAAA resource record in your DNS zone file?

Back 51

It identifies a host’s IPv6 address.

Front 52

Which of the following 10-gigabit technologies has the longest maximum segment length?

Back 52

10GBase-ER

Front 53

You suspect that a machine on your network with the host name PRTSRV is issuing excessive broadcast traffic on your network. What command can you use to determine this host’s IP address?

Back 53

nslookup PRTSRV

Front 54

Which of the following is a single sign-on authentication method?

Back 54

Kerberos

Front 55

How many bits are in an IPv6 address?

Back 55

128

Front 56

What is the network ID for a network that contains the group of IP addresses from 194.73.44.10 through 194.73.44.254 and is not subnetted?

Back 56

194.73.44.0

Front 57

What STP configuration ensures that a laptop connected to a switch cannot alter the STP paths on the network?

Back 57

BPDU guard

Front 58

Which OSI layer(s) operate differently in wired versus wireless network connections?

Back 58

Layers 1 and 2

Front 59

Which of the following WAN topologies is the most fault tolerant?

Back 59

Full mesh

Front 60

In IPv6 addressing, which of the following prefixes indicates that an address belongs to a multicast group?

Back 60

FF02

Front 61

Which of the following wireless networking standards can reliably transmit data the farthest?

Back 61

LTE

Front 62

You work for a soft drink company where the temperature of the sodas must be monitored before the drinks are bottled. What device does this industrial network require that can detect this information but is not capable of adjusting the thermostat of the food processing equipment in reaction to temperature changes?

Back 62

PLC

Front 63

Which of the following allows a protocol analyzer on your network’s backbone switch to monitor all the traffic on a VLAN?

Back 63

Port mirroring

Front 64

You have created a new Web server on a computer running the Linux operating system. Which of the following programs will generate messages when modules don’t load correctly or services encounter errors?

Back 64

Syslog

Front 65

What is one function of a VPN concentrator?

Back 65

To establish VPN tunnels

Front 66

You are helping to troubleshoot a recurring problem related to obtaining and keeping a DHCP-distributed IP address on a colleague’s Windows 7 workstation. What application would allow you to configure the workstation to tally these errors and send you an email message every time such a problem occurred?

Back 66

Event Viewer

Front 67

In NAT, how does an IP gateway ensure that outgoing traffic can traverse public networks?

Back 67

It replaces each outgoing packet’s Source address field with a public IP address.

Front 68

You are a networking technician in a radiology clinic, where physicians use the network to transmit and store patients’ diagnostic results. Shortly after a new wing, which contains X-ray and magnetic resonance imaging (MRI) machines, is added to the building, computers in that area begin having intermittent problems saving data to the file server. After you have gathered information, identified the symptoms, questioned users, and determined what has changed, what is your next step in troubleshooting this problem?

Back 68

Establish a theory of probable cause.

Front 69

In IPv6, which of the following is the loopback address?

Back 69

::1

Front 70

A regional bank manager asks you to help with an urgent network problem. Because of a sudden and severe network performance decline, the manager worries that the bank’s network might be suffering a DoS attack. Viewing which of the following types of network documentation would probably give you the quickest insight into what’s causing this problem?

Back 70

Firewall log

Front 71

As a networking professional, you might use a multimeter to do which of the following? (Choose all that apply.)

Back 71

1) Verify that the amount of resistance presented by terminators on coaxial cable networks is appropriate

2) Check for the presence of noise on a wire (by detecting extraneous voltage)

Front 72

You work for an ISP. Several of your customers have called to complain about the slow response from a popular Web site. You suspect that network congestion is at fault. Which TCP/IP utility would help you determine where the congestion is occurring?

Back 72

Tracert

Front 73

Routers use IGMP to:

Back 73

Identify nodes belonging to a multicast group

Front 74

What would the command route del default gw 192.168.5.1 eth1 accomplish on your Linux workstation?

Back 74

Remove the workstation’s route to the default gateway whose IP address is 192.168.5.1

Front 75

Which of the following wireless standards provides an entirely IP-based, packet-switched network for both voice and data transmissions? (Choose two.)

Back 75

1) LTE

2) 802.16m

Front 76

Your network manager has purchased a dozen new access points and all are configured to use the new 802.11ac standard in the 5-GHz band. These access points will be backward-compatible with older access points that run which of the following standards? (Choose all that apply.)

Back 76

1) 802.11g

2) 802.11n

3) 802.11b

Front 77

At the beginning of the school year, students at your school must configure their computers and other devices to obtain trusted access to the student portion of the school’s network. What is this process called?

Back 77

Onboarding

Front 78

You are a support technician working in a data closet in a remote office. You suspect that a connectivity problem is related to a broken RJ-45 plug on a patch cable that connects a switch to a patch panel. You need to replace that connection, but you forgot to bring an extra patch cable. You decide to install a new RJ-45 connector to replace the broken RJ-45 connector. What two tools do you need to successfully accomplish this task?

Back 78

1) Crimping tool
2) Wire stripper

Front 79

You have installed and configured two virtual Web servers and a virtual mail server on a physical server. What networking mode will you assign to each server’s vNIC to ensure that the virtual machines’ hosts on the Internet can access the virtual machines?

Back 79

Bridged

Front 80

You are configuring a DHCP server. Which of the following variables refers to the range of IP addresses that you will make available to all nodes on a segment?

Back 80

Scope

Front 81

You are rearranging nodes on your Gigabit Ethernet network. Due to a necessarily hasty expansion, you have decided to supply power to a wireless router in a makeshift data room using PoE. What is the minimum cabling standard you must use to connect this wireless router to the network’s backbone?

Back 81

Cat 5e

Front 82

Suppose your Windows laptop’s wireless network adapter is configured to use the 802.11n wireless networking standard. Also, suppose a café you visit has an 802.11ac access point. Assuming you have the correct SSID and logon credentials, what will happen when you attempt to associate with the café’s wireless network?

Back 82

Your wireless networking client will be able to see the access point and successfully associate with it.

Front 83

In the process of troubleshooting an intermittent performance problem with your network’s Internet connection, you attempt to run a tracert test to microsoft.com. The tracert response displays the first 12 hops in the route, but then presents several “Request timed out” messages in a row. What is the most likely reason for this?

Back 83

Microsoft’s network is bounded by firewalls that do not accept incoming ICMP traffic.

Front 84

What element of network management systems operates on a managed device, such as a router?

Back 84

Agent

Front 85

Which of the following QoS techniques enables packet-switched technologies to travel over traditionally circuit-switched connections?

Back 85

MPLS

Front 86

Which transport protocol and TCP/IP port does telnet use?

Back 86

TCP, port 23

Front 87

You have been asked to help improve network performance on a store’s small office network, which relies on two switches, two access points, and a router to connect its 18 employees to the Internet and other store locations. You decide to determine what type of traffic the network currently handles. In particular, you’re interested in the volume of unnecessary broadcast traffic that might be bogging down shared segments. Which of the following tools will help you identify the percentage of traffic that comprises broadcasts?

Back 87

Protocol analyzer

Front 88

Due to popular demand from employees who need to roam from one floor of your office building to another, you are expanding your wireless network. You want to ensure that mobile users enjoy uninterrupted network connectivity without having to reconfigure their workstations’ wireless network connection settings. Which of the following variables must you configure on your new access points to match the settings on existing access points?

Back 88

SSID

Front 89

Which of the following is a reason for using subnetting?

Back 89

To limit broadcast domains

Front 90

You have connected to your bank’s home page. Its URL begins with “https://.” Based on this information, what type of security can you assume the bank employs for receiving and transmitting data to and from its Web server?

Back 90

SSL

Front 91

You want to add the five virtual machines that exist on your host machine to the Staff VLAN at your office. Which of the following must your host machine’s NIC support?

Back 91

Trunking

Front 92

Which of the following devices separates broadcast domains?

Back 92

Router