Wgu C480

Front 1

What device operates at Layer 3 of the OSI model?

Back 1

Router

Front 2

What topology is seen in WAN networks and was designed to increase the redundancy of the communications?

Back 2

Dual ring

Front 3

Which of the following devices creates a separate broadcast domain for each of its active interfaces by default?

Back 3

Router

Front 4

What topology aims to balance redundancy with easier management and cost-effectiveness?

Back 4

Partial mesh

Front 5

A router resides at which layer of the OSI Model?

Back 5

Layer 3

Front 6

Which of the following protocols is used to send e-mail to an e-mail server?

Back 6

SMTP

Front 7

Which two of the following protocols are used to connect to a remote host via a terminal emulator?

Back 7

SSH

Telnet

Front 8

What are the two primary protocols found at the Transport Layer of the TCP/IP Stack?

Back 8

TCP

UDP

Front 9

Which of the following specifies a type of fiber optic cable that has a core whose diameter is large enough to transport light arriving at a variety of angles (that is, more than one mode of propagation)?

Back 9

MMF

Front 10

Which of the following is a technology that allows a service provider to offer networking services to customers?

Back 10

NaaS

Front 11

Cables in wiring closets commonly terminate on what?

Back 11

Patch panel

Front 12

Which of the following network appliances is also known as a content switch?

Back 12

Load balancer

Front 13

Which of the following connects to multiple intermediate distribution frames?

Back 13

MDF

Front 14

Which of the following DNS record types is used to map a hostname to an IPv4 address?

Back 14

A

Front 15

What virtual network component allows virtual servers located on the same physical server to be logically separated into different VLANs?

Back 15

Virtual switch

Front 16

Which of the following are valid DHCP message types used during a DHCP reservation?

Back 16

DHCPDISCOVER

DHCPREQUEST

DHCPACK

Front 17

What is a DHCP lease?

Back 17

A DHCP lease is a temporary assignment of IP address information to a DHCP client

Front 18

Most DHCP client devices on a network are dynamically assigned an IP address from a DHCP server (that is, dynamic addressing). However, some devices (for example, servers) might need to be assigned a specific IP address. What DHCP feature allows a static IP address to MAC address mapping?

Back 18

Reservation

Front 19

Which type of unshielded twisted pair (UTP) cable is commonly used for 1000BASE-T Ethernet networks and is often made of relatively thick conductors (for example, 22 gauge or 23 gauge wire) and thick insulation?

Back 19

Category 6

Front 20

Which of the following copper connector types is an eight-pin connector found in most Ethernet networks?

Back 20

RJ-45

Front 21

Which of the following reflect the media type, bandwidth capacity, and distance limitation combination of 10BASE-T Ethernet?

Back 21

Cat 3 (or higher) UTP/10 Mbps/100 m

Front 22

Which Ethernet switch feature allows an Ethernet switch to make a copy of frames seen on one switch port and send those copies out of another Ethernet switch port? (NOTE: This feature is often used to allow a network analyzer connected to one switch port to see traffic present on a different switch port.)

Back 22

Port mirroring

Front 23

What media type is used by 1000BASE-ZX?

Back 23

SMF

Front 24

Which of the following standards specifies a method for sending traffic for multiple VLANs across a single link?

Back 24

IEEE 802.1Q

Front 25

You have a class B subnet for your office networks. Allocate the minimum number of addresses required to accommodate each department to maximize the number of available subnets.Network range: 172.16.0.0/23Marketing: 20 devicesProduction: 18 devicesTraining: 33 devicesDesigning: 89 devicesSelect the minimum number of addresses using the CIDR notation required for each network

Back 25

Designing /25

Training /26

Marketing, Production /27

A /23 subnet includes 512 IP addresses. Thus, 512-256=256. So, the contiguous block of remaining addresses will be /24

Front 26

Which of the following address ranges is not routable?

Back 26

169.254.0.0 – 169.254.255.255

Front 27

A Microsoft Windows® PC is configured to obtain its IP address via DHCP. If the PC is unable to contact a DHCP server, the PC automatically assigns itself an IP address in what range?

Back 27

169.254.0.0 – 169.254.255.255

Front 28

An IP version 6 (IPv6) address contains how many bits?

Back 28

128

Front 29

Your company has been assigned the 172.16.0.0/16 network for use at one of its sites. You need to use a subnet mask that will accommodate 42 subnets while simultaneously accommodating the maximum number of hosts per subnet. What subnet mask will you use?

Back 29

/22

Front 30

What loop-prevention mechanism is an override of another loop-prevention mechanism?

Back 30

Poison reverse

Front 31

What variation of network address translation (NAT) automatically assigns an inside global address from a pool of available addresses?

Back 31

DNAT

Front 32

In cable modem technologies, the frequencies dedicated to data transmission are specified by what?

Back 32

DOCSIS

Front 33

What does the term asymmetric mean in DSL?

Back 33

The upload speed and the download speed differ

Front 34

What specification identifies the cable television frequencies dedicated to data transmission?

Back 34

DOCSIS

Front 35

What device terminates the DSL signal coming from a customer?

Back 35

DSLAM

Front 36

What technology operates in the 3 kHz through 300 GHz range?

Back 36

Radio

Front 37

A technician needs to install a wireless network in Joe's Coffee shop. Joe wants to provide free Internet service to his customers. Which of the following will help him?

Back 37

Install an omnidirectional antenna

Front 38

Mark is managing a small organization with 20 employees. He has enabled WEP, disabled SSID broadcast, and selected the channel mode as auto. He wants to secure WAP from being accessed by any unauthorized users. Which of the following steps will Mark take?

Back 38

Configure WPA2 encryption

Configure MAC filtering

Front 39

What is the maximum range of the IEEE 802.11g wireless standard?

Back 39

32 m indoors / 140 m outdoors

Front 40

Orthogonal Frequency Division Multiplexing (OFDM) is a wireless LAN (WLAN) transmission method. Which three of the following WLAN standards support OFDM?

Back 40

802.11a

802.11g

802.11n

Front 41

What is the maximum bandwidth of an 802.11b wireless LAN (WLAN)?

Back 41

11 Mbps

Front 42

Which of the following approaches to wireless LAN (WLAN) security uses TKIP for encryption?

Back 42

WPA

Front 43

A wireless LAN (WLAN) configured to work in an ad hoc fashion (that is, without requiring the use of an access point) is known as what type of WLAN?

Back 43

IBSS

Front 44

What wireless technology allows the IEEE 802.11n standard to achieve higher throughput than other standards (that is, IEEE 802.11 a/b/g) by using multiple antennas for transmission and reception?

Back 44

MIMO

Front 45

Which wireless LAN (WLAN) standards can operate in the 5 GHz frequency band?

Back 45

802.11a

802.11n

Front 46

Which of the following (QoS) functions places traffic into different categories?

Back 46

Classification

Front 47

Which of the following technologies is not typically considered for an increase in redundancy?

Back 47

PAT

Front 48

Which of the following mechanisms is considered a link-efficiency tool in QoS?

Back 48

LFI

Front 49

What term refers to the weakening of a signal as it travels in the network?

Back 49

Attenuation

Front 50

What is an acceptable one-way latency in a typical VoIP network?

Back 50

150 ms

Front 51

A technician wants to get the protocol statistics and the active TCP/IP network connections of his computer. Which of the following will he use?

Back 51

netstat

Front 52

You want to add the IP address 200.200.10.10 and its corresponding MAC address 08-00-8b-20-9a-ff to an ARP table for IP-to-physical address translation. Which commands will you use to accomplish this?

Back 52

arp -s 200.200.10.10 08-00-8b-20-9a-ff

Front 53

Which of the following is a Microsoft Windows® command that can display a listing of NetBIOS device names learned by a PC?

Back 53

nbtstat

Front 54

What command enables you to refresh DHCP lease information?

Back 54

ipconfig

Front 55

Which of the following UNIX commands can be used to configure the IP address of a UNIX host's Ethernet interface?

Back 55

ifconfig

Front 56

Which tool enables you to test basic connectivity to a remote system?

Back 56

ping

Front 57

What tool will you use to trace cables in multiple-pair wiring?

Back 57

Toner probe

Front 58

Which of the following can be used to measure the amount of current (in Amps) flowing through a circuit?

Back 58

Multimeter

Front 59

Which of the following tools should be used to connect wires to a 110 block?

Back 59

Punch down tool

Front 60

Which if the following configuration management (CM) elements involves collecting network statistics during normal network operation?

Back 60

Baselining

Front 61

Which of the following is a Microsoft Windows® log that would report events related to software applications running on the underlying operating system?

Back 61

Application

Front 62

Which of the following protocols can be used to remotely connect to and control the desktop of a Microsoft Windows® computer?

Back 62

RDP

Front 63

Which of the following pieces of equipment can be used to determine the supported frequency range of a cable?

Back 63

Cable certifier

Front 64

Even though two of the following virtual private network (VPN) protocols support HTTPS, which one is most commonly used today?

Back 64

TLS

Front 65

What type of firewall filters traffic based on a set of rules specifying what traffic is allowed to enter or exit an interface, without inspecting that traffic?

Back 65

Packet filtering

Front 66

Which of the following is a system designed to appear as an attractive attack target?

Back 66

Honey pot

Honey net

Front 67

Which of the following best defines a firewall?

Back 67

A firewall defines a set of rules dictating which types of traffic are permitted or denied as that traffic enters or exits a firewall interface

Front 68

Which two of the following protocols are commonly used to communicate with an AAA server?

Back 68

RADIUS

TACACS+

Front 69

A host that can protect itself by inspecting traffic flowing into its network interface is called a ________.

Back 69

HIPS

Front 70

Which of the following allows a user to authenticate only once in order to gain access to multiple systems, without requiring the user to independently authenticate with each system?

Back 70

SSO

Front 71

Which of the following remote access technologies is a Citrix Systems® proprietary protocol that allows applications running on one platform (for example, Microsoft Windows®) to be seen and controlled from a remote client, independent of the client platform (for example, UNIX)?

Back 71

ICA

Front 72

Which of the following remote access security technologies performs authentication through a three-way handshake (that is, challenge, response, and acceptance messages) between a server and a client, where the three-way handshake allows a client to be authenticated without sending credential information across a network?

Back 72

CHAP

Front 73

Which of the following security attacks occurs when an attacker sends the target system a flood of data or requests that consume the target system's resources?

Back 73

DoS attack

Front 74

Which of the following security attacks occurs when an attacker exploits a known vulnerability in an application (for example, an error in an application that allowed that application to write to an area of memory dedicated to a different application), which could cause another application to crash?

Back 74

Buffer overflow attack

Front 75

Which of the following user authentication technologies uses a supplicant, an authenticator, and an authentication server?

Back 75

802.1X

Front 76

Adam has installed a small network in an office. All computers have Gigabit Ethernet NICs. The router on the network works at 1000 Mbps. On his routine checkup, Adam found that the Internet speed is at a max of 100 Mbps. What will he do to fix this problem?

Back 76

Replace the cable with a Category 6 cable

Front 77

A technician has installed WAP in an open warehouse environment. He notices varying signal strengths throughout the warehouse. What will he do to improve the signal strength?

Back 77

Change the antenna placement

Front 78

Which of the following is a modular switch port, allowing you quickly remove and insert a port in a modular switch you are troubleshooting?

Back 78

GBIC

Front 79

Which of the following conditions would most likely result in corrupted data?

Back 79

Bad cables or connectors

Front 80

Of the steps listed, which one occurs first in a structured troubleshooting model?

Back 80

Hypothesize a probable cause

Front 81

Which of the following parameters must match between a wireless LAN (WLAN) client and a WLAN access point (AP) in order for the client to associate with the AP?

Back 81

Encryption type

SSID

Channel

Front 82

While troubleshooting a connectivity issue in your network, you did a Ping from Host A to Host B, and the Ping was successful. From this, where can you conclude the issue resides?

Back 82

Above OSI Layer 3

Front 83

What wireless LAN (WLAN) device interconnects a wired LAN with wireless devices?

Back 83

AP