A network analyzer captures traffic from a host that is sending 802.1q traffic to a Layer 3 switch. Which of the following attacks is occurring?

A. MITM

B. VLAN hopping

C. ARP poisoning

D. Spoofing

A network technician needs to subnet the network. The marketing department has 28 devices. Which of the following private IP address spaces should be used to ensure the MINIMUM number of unused IP addresses?

A. Gateway: 10.10.10.1 Netmask: 255.255.255.192

B. Gateway: 172.15.18.128 Netmask: 255.255.255.224

C. Gateway: 192.168.1.97 Netmask: 255.255.255.224

D. Gateway: 224.102.113.65 Netmask: 255.255.255.192

An office network consists of one two-port router connected to a 12-port switch. A four-port hub is also connected to the switch. On this particular network, which of the following is the number of collision domains that exist?

A. 3

B. 12

C. 13

D. 14

E. 15

A technician is trying to configure a previously owned WAP. The technician successfully logs into the administrative console and attempts to input the IP address on the WAP. However, the WAP is not accepting the command. Which of the following is causing the problem?

A. The WAP antenna is damaged

B. The WAP transmitter light is dim

C. The terminal emulation software is misconfigured

D. The LWAPP image is installed on the WAP

A network administrator configures an email server to use secure protocols. When the upgrade is completed, which of the following ports on the firewall should be configured to allow for connectivity? (Choose three.)

A. TCP 25

B. TCP 110

C. TCP 143

D. TCP 389

E. TCP 587

F. TCP 993

G. TCP 995

Which of the following would be the MOST efficient subnet mask for a point-to-point link?

A. /28

B. /29

C. /31

D. /32

An ISP technician gets a call from a business that just changed equipment but can no longer connect to the Internet. The technician checks the ARP table on the
ISP switch, and there is no corresponding MAC address present. Instead, the entry is `Incomplete`. Which of the following could cause this condition?

A. VLAN mismatch

B. Duplex/Speed mismatch

C. Duplicate IP address

D. TX/RX reverse

A technician is observing brownout issues at a smaller office. At least once a week, the edge switch power cycles. Which of the following should the technician do to resolve the issue?

A. Install a new switch

B. Install a UPS

C. Replace the switch uplink cable.

D. Install a new electrical circuit.

A network technician needs to install the latest firmware on the switch to address a recently discovered vulnerability. Which of the following should the technician do to have a rollback plan in case of issues with the new firmware? (Choose two.)

A. Label the switch with IP address and firmware version

B. Draw the switchport diagram

C. Create a change management document

D. Draw the network rack logical diagram

E. Confirm standard operating procedures documentation

F. Create a performance baseline of the switch

An organization has migrated the internal network from a static IP addressing scheme to use DHCP. After fully deploying the DHCP solution, users within the web deployment team are unable to access the web server that is hosted in the DMZ. After reviewing the logs, the network technician sees multiple deny entries from the internal network to the DMZ. Which of the following is the MOST likely cause?

A. The DNS entries are incorrect for the web development team.

B. The server IP addresses in the DMZ have changed after migrating to DHCP.

C. The OSPF configuration was not updated to route the new dynamic address spaces.

D. The ACL does not accurately reflect current addresses for the web development team.

A second router was installed on a network to be used as a backup for the primary router that works as a gateway. The infrastructure team does not want to change the IP address of the gateway on the devices. Which of the following network components should be used in this scenario?

A. Loopback IP

B. Virtual IP

C. Reserved IP

D. Public IP

A network analyst is troubleshooting a connectivity issue between switch A and switch B. The switches are configured with the following subnets:
 
Clients in VLANs 10 and 16 can communicate between switch A and switch B, but clients in VLAN 13 can communicate only with other clients on the same switch.
Which of the following is the MOST likely cause?

A. 802.1Q mismatch

B. Performance bottleneck

C. Incorrect netmask

D. Port security

A small company is requesting a quote to refresh its wireless network. The company currently runs 60 autonomous APs and has plans to increase wireless density by 50% in the near future. The requirements state that the chosen solution should significantly decrease the management overhead of the current wireless network.
Which of the following should the vendors recommend in response to the quote request?

A. The use of lightweight APs with a load balancer

B. The use of autonomous APs with a wireless controller

C. The use of autonomous APs with a load balancer

D. The use of lightweight APs with a wireless controller

Which of the following WAN technologies swaps the header on a packet when internally switching from one provider router to another?

A. ATM

B. Frame relay

C. MPLS

D. PPP

A flood disables the equipment in a company's server room. When implementing the disaster recovery plan, all operations are immediately transitioned to another location with momentary downtime. This is an example of a:

A. warm site.

B. cold site.

C. snapshot.

D. hot site.

Which of the following IEEE standards explains the characteristics of how PoE should operate in a switched network?

A. 802.11ac

B. 802.1q

C. 802.1X

D. 802.3af

A network administrator wants to employ a username and password authentication system for guest WiFi. Which of the following is the BEST option to provide this type of authentication?

A. Port security

B. MAC filtering

C. Network access control

D. Captive portal

A network technician is working on a new switch implementation to expand the network. Which of the following is the BEST option to ensure the implementation goes according to business requirements?

A. AUP

B. NDA

C. SOP

D. SLA

Given the table below:
 
Which of the following addresses can Host E send a packet to that will reach Hosts C and D, but not Hosts A and B?

A. 192.168.5.1

B. 192.168.11.0

C. 192.168.11.255

D. 192.168.255.255

A small team is overloaded with requests for database resources. The Chief Information Officer (CIO) is concerned the company does not have the resources to deploy and manage these additional services efficiently. Which of the following types of cloud services would be the MOST effective?

A. PaaS

B. IaaS

C. BaaS

D. SaaS

Which of the following can be used to enable and translate the communication between legacy non-IP phone systems with solutions for voice communications that can run over the Internet?

A. Media converter

B. RTP

C. ISDN service

D. VoIP gateway

E. SIP trunk

An ISP technician frequently needs to administer a router remotely in the event of a configuration error or WAN outage. Which of the following technologies would facilitate the required connectivity?

A. Remote access VPN

B. Remote file access

C. Out-of-band

D. Secure Shell

A network administrator is installing a new IDS device that will collect logs and alert the administrator of breaches.
* The network infrastructure includes a modern, a firewall, and core and access switches.
* The modem is ISP provided and only forwards packets from the data circuit.
* The firewall handles stateful packet inspection, the ACL, and application layer filtering.
Which of the following describes where the administrator should install the IDS device on the network to collect the MOST relevant information?

A. In front of the modem and firewall

B. Between the modem and firewall

C. Behind the firewall on the core switch

D. After the access switch

Which of the following would block access to an untagged port when connected to a Layer 2 device?

A. BPDU guard

B. Spanning tree

C. Flood guard

D. Root guard

A network technician is configuring a new web server at the company office. The network manager has instructed the technician to implement it in such a way so it is isolated from the local network and still able to be reached from an external network. Which of the following BEST describes where the technician should set up the new server?

A. Private VLAN

B. IDF

C. DMZ

D. Native VLAN

Which of the following protocols is associated with a three-way handshake?

A. UDP

B. ICMP

C. GRE

D. TCP

A network technician is installing a new network switch is looking for an appropriate fiber optic patch cable. The fiber optic patch panel uses a twist-style connector. The switch uses a SFP module. Which of the following connector types should the fiber patch cable have?

A. LC

B. ST

C. SC

D. MTRJ

E. MTP

A network administrator is configuring a link-state routing protocol for traffic. Which of the following routing protocols should be implemented?

A. RIPv2

B. BGP

C. EIGRP

D. OSPF

A network technician is segmenting network traffic into various broadcast domains. Which of the following should the network technician utilize?

A. VLAN

B. STP

C. ACL

D. BPDU

A network technician receives a call from a branch office about a problem with its wireless connectivity. The user states the office is hosting a large meeting that includes some online training with local businesses. The guest users have all brought devices to connect to the guest network at the branch office. All users are connected to a single WAP and are reporting that connections keep dropping and network spends are unusable. Which of the following is the MOST likely cause of this issue?

A. DHCP exhaustion

B. Channel overlapping

C. Interference

D. Overcapacity

A network technician is performing an initial configuration of a new network switch. Per company policy, the only authorized manner for remotely administering the switch is through a command line. Which of the following protocols should the technician disable to adhere to the company policy?

A. HTTP

B. Telnet

C. SSH

D. TFTP

A network technician is installing a wireless network for a small medical office. The doctors need to download high resolution x-rays quickly with minimal latency.
Which of the following technologies should be utilized?

A. RFID

B. MIMO

C. CDMA

D. 802.11g

802.11n clients currently have no way to connect to the network. Which of the following devices should be implemented to let the clients connect?

A. Router

B. Range extender

C. VoIP endpoint

D. Access point

A technician is replacing a switch at a branch office and discovers the existing backbone cable does not fit in the new switch. The fiber patch panel has circular connections. The new switch has a transceiver that accepts a smaller square adapter of two strands. Which of the following patch cables would the technician need to complete the installation?

A. LC to SC

B. SC to ST

C. LC to ST

D. ST to ST

E. SC to SC

A technician is assigned to secure a basic wireless network. Which of the following authentication protocols should the technician use to perform this task?
(Choose two.)

A. RDP

B. SNMP

C. WPA2

D. EAP

E. SSL

A new employee is unable to access any network resources. All other users are able to access the network at 100Mbps. No IP address, subnet mask, or default gateway is displayed on the new employee's workstation. The network administrator reterminates all connectors using the correct standard. Upon further investigation, the network administrator also notices the following:
Wire map results from the user patch cable to the patch cable connecting to the switch:
✑ Pins 5 and 7 are short.
✑ The distance is 200ft (61m).
Additional observations on the switch:
✑ The VLAN is set correctly.
✑ The port is not disabled.
✑ The duplex/speed settings are correct.
✑ Port LEDs are off for that port.
✑ The port is set to untagged.
Which of the following is the MOST likely reason the new employee is having network issues?

A. Bad switchport

B. Incorrect pinout

C. Open/short

D. VLAN mismatch

E. Distance limitation

A technician notices clients are receiving a 169.254.x.x IP address following the upgrade of a server. Which of the following ports should the technician check on the local server firewall?

A. ports 20 and 21

B. ports 67 and 68

C. ports 80 and 443

D. port 123 and 8080

A network technician has been attempting to gain access to a switch over the network after an extended power outage but has been unsuccessful. The technician runs a network scan and does not find the switch in the results. The switch is turned on, and the link lights are all green. Which of the following should the technician use to gain access to the switch?

A. SSH

B. OOB

C. VNC

D. Telnet

At which of the following layers of the OSI model does compression occur?

A. Session

B. Transport

C. Data link

D. Presentation

A company runs Linux servers in its own datacenter and also on a popular public cloud service provider. The servers hosted by the cloud provider can only be accessed with proper authorization and are only accessed by the company's datacenter. Which of the following BEST describes the type of cloud architecture being used? (Choose two.)

A. Private

B. Hybrid

C. Public

D. IaaS

E. PaaS

F. SaaS

A technician has racked a new access switch and has run multimode fiber to a new location. After installing an extended-range 10Gb SFP in the core switch, the technician installed a 10Gb SFP in the access switch and connected the port to the new extension with a fiber jumper. However, the link does not display, and the technician cannot see light emitting from the core switch. Which of the following solutions is MOST likely to resolve the problem?

A. Swap the fiber pairs in one of the SFPs

B. Replace the jumpers with single-mode fiber

C. Set the correct MTU on the new interface

D. Install an optic that matches the fiber type

Users are reporting their network is extremely slow. The technician discovers pings to external host have excessive response times. However, internal pings to printers and other PCs have acceptable response times. Which of the following steps should the technician take NEXT?

A. Determine if any network equipment was replaced recently

B. Verify malware has not disabled the users’ PC firewalls

C. Replace users’ network cables with known-good network cables

D. Power cycle the web server

Which of the following technologies is MOST likely used to provide connectivity to multiple IoT devices within a room without access to the WLAN?

A. IR

B. 802.11

C. Bluetooth

D. NFC

A senior technician is reconfiguring the company's firewall because a number of additional devices have been added to the network. The company has acquired a new VoIP phone system, and a group of junior technicians has set up an experimental lab with access to the Internet. Management has given the team latitude for research and development, but would like the company network to be secure and the performance to remain consistent with existing baselines. Which of the following would be the BEST method to reconfigure the network?

A. The technician should put the junior team’s lab in a VLAN and the phone system in the DMZ.

B. The technician should put the junior team’s lab in a DMZ and the phone system in a VLAN.

C. The technician should put the junior team’s lab in the LAN and the phone system in the WAN.

D. The technician should put the junior team’s lab in the WAN and the phone system in a WLAN

A content filter is set to analyze XML and JSON that users access from the Internet. At which of the following layers is this analysis taking place?

A. 1

B. 3

C. 5

D. 7

E. 6

Which of the following would allow a network technician to access files on a remote system? (Choose two.)

A. FTP

B. TFTP

C. VLSM

D. SIP

E. SMTP

F. IMAP

A network administrator needs to create a network for 4,000 devices while conserving address space. Which of the following subnet masks should be used on this network?

A. 255.254.0.0

B. 255.255.224.0

C. 255.255.240.0

D. 255.255.248.0

E. 255.255.255.240

Which of the following policies prohibits a network administrator from using spare servers in the datacenter to mine bitcoins?

A. NDA

B. BYOD

C. AUP

D. MOU

A WAP has been dropping off the network sporadically and reconnecting shortly thereafter. The Cat 5 wire connecting the access point is a long run of 265ft (81m) and goes through the business area and the mechanical room. Which of the following should the technician do to fix the AP connectivity issue?

A. Install a repeater to boost the signal to its destination

B. Replace the UTP cable with plenum cable.

C. Upgrade the cable from Cat 5 to Cat 5e.

D. Set the AP to half duplex to compensate for signal loss.

A company decides to deploy customer-facing, touch-screen kiosks. The kiosks appear to have several open source service ports that could potentially become compromised. Which of the following is the MOST effective way to protect the kiosks?

A. Install an IDS to monitor all traffic to and from the kiosks.

B. Install honeypots on the network to detect and analyze potential kiosk attacks before they occur.

C. Enable switchport security on the ports to which the kiosks are connected to prevent network-level attacks.

D. Create a new network segment with ACLs, limiting kiosks’ traffic with the internal network.