1 to 50 Flashcards

1
Q

A network technician receives a call from a use who is experiencing network connectivity issues.
The network technician questions the user and learns the user brought in a personal wired router to use multiple computers and connect to the network.
Which of the following has the user MOST likely introduced to the network?

A. Rogue DHCP server
B. Evil twin
C. VLAN mismatch
D. Honeypot

A

Answer: A

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2
Q

A technician is setting up a direct connection between two older PCs so they can communicate but not be on the
corporate network. The technician does not have access to a spare switch but does have spare Cat 6 cables, RJ-45
plugs, and a crimping tool. The technician cuts off one end of the cable. Which of the following should the technician do
to make a crossover cable before crimping the new plug?

A Reverse the wires leading to pins 1 and 2
B Reverse the wires leading to pins 1 and 3
C Reverse the wires leading to pins 2 and 3
D Reverse the wires leading to pins 2 and 4

A

Answer: D

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3
Q

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 domain that exist?

A  3
B  12
C  13
D  14
E  15
A

Answer: D

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4
Q

A network technician wants to remotely and securely access the desktop of a Linux workstation. The desktop is running
remote control software without encryption. Which of the following should the technician use to secure the connection?

A. SSH in tunnel mode
B. RDP set to console connection
C. EAP-PEAP
D. SFTP

A

Answer: A

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5
Q

Which of the following should current network performance be compared against to determine network anomalies?

A Baseline
B Traffic analysis
C Packet capture
D Logs

A

Answer A

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6
Q
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
A

Answer: E F G

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7
Q

After a server outage, a technician discovers that a physically damaged fiber cable appears to be the problem.
After replacing the cable, the server will still not connect to the network. Upon inspecting the cable at the server end, the technician discovers light can be seen through one of the two fiber strands.
Which of the following should the technician do FIRST to reconnect the server to the network?

A Reverse the fiber strands of the cable and reconnect them to the server
B Use a TDR to test both strands of a new replacement cable prior to connecting it to the server
C Replace the server’s single-mode fiber cable with multimode fiber
D Move the fiber cable to different port on the switch where both strands function

A

Answer: A

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8
Q

The backups server connects to a NAS device using block-level storage over Ethernet. The performance is very slow, however, and the network technician suspects the performance issues are network related. Which of the following should the technician do to improve performance?

A. Utilize UDP to eliminate packet overhead
B. Turn off MDIX settings on the NAS and server switchports
C. Enable jumbo frames on the NAS and server
D. Encapsulate the storage traffic in a GRE tunnel

A

ANSWER C

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9
Q

A technician is trying to determine the IP address of a customer’s router. The customer has an IP address of 192.168.1.55/24. Which of the following is the address of the customer’s router?

A  192.168.0.55
B  192.168.1.0
C  192.168.1.1
D  192.168.5.5
E  255.255.255.0
A

Answer C

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10
Q

A network technician is able to connect the switches between to offices, but the offices cannot communicate with each other, as each office uses a different IP addressing scheme. Which of the following devices needs to be installed between the switches to allow communication?

A Bridge
B Access point
C Router
D Range extender

A

ANSWER IS C (AGAIN)

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11
Q

A network technician is working on a proposal for email migration from an on-premises email system to a vendor-hosted
email in the cloud. The technician needs to explain to management what type of cloud model will be utilized with the
cloud-hosted email. Which of the following cloud models should the technician identify in the proposal?

A IaaS
B PaaS
C SaaS
D MaaS

A

ANSWER IS C

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12
Q

Which of the following is the correct port number for NTP?

A 25
B 69
C 123
D 161

A

ANSWER IS C

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13
Q

A technician is upgrading the firmware on an older KVM switch. The specifications call for a serial port to connect to the computer on one side, and an Ethernet jack to connect to the switch on the other side.
Which of the following connectors does the technician need for this cable? (Choose two.)

A  RG-9
B  DB-9
C  RJ-11
D  DB-25
E  RJ-45
F  BNC
A

ANSWERS ARE B and E

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14
Q

An end-user device requires a specific IP address every time it connects to the corporate network; however, corporate policy does not allow the use of static IP addresses. Which of the following will allow the request to be fulfilled without
breaking the corporate policy?

A DHCP relay
B DHCP exclusion
C DHCP option
E DHCP reservation

A

ANSWER IS D

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15
Q

A technician is planning a remote-access strategy to manage routers and switches on a dedicated management network.
The management network is segregated from the production network and uses site-to-site VPN connections. Some of the equipment does not support encryption. Which of the following should the technician choose that all the equipment would support?

A Telnet
B SSL
C SSH
D IPSec

A

ANSWER IS A

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16
Q
Which of the following protocols do MOST MITM attacks utilize?
A. ARP
B. SIP
C. FTP
D. SCP
A

ANSWER IS A

17
Q

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

ANSWER IS B

18
Q

A systems administrator has recently purchased and installed a large electronic signage screen for the company’s parking garage. The screen’s management software was installed on a server with public IP address to allow remote management. The systems administrator is now troubleshooting an issue with the screen displaying unknown, random, and inappropriate messages. Which of the following is MOST effective in resolving this issue?

A Changing the management software’s default credentials
B Disabling unnecessary services from the server and management software
C Changing the management software’s default port
D Replacing the management software’s self-signed certificate with a valid certificate

A

ANSWER IS A

19
Q

A technician is investigating a server performance issue. The technician has gathered the server utilization statistics.
Which of the following should the technician use to determine which statistics are not in the normal range?

A Baseline review
B Vulnerability scan
C System life-cycle report
D Archiving logs

A

ANSWER IS A

20
Q

Which of the following devices, if implemented, would result in decreased administration time of an 802.11 network
running centralized authentication services? (Choose two.)

A  VPN concentrator
B  Proxy server
C  Wireless controller
D  RADIUS server
E  Multilayer switch
A

ANSWER IS C & D

21
Q

A technician must determine if a web page user’s visits are connecting to a suspicious website’s IP address in the
background. Which of the following tools would provide the information on TCP connections?

A  netstat
B  tracert
C  arp
D  ipconfig
E   route
A

ANSWER IS A

22
Q

An administrator is moving to a new office. There will be several network runs through the ceiling area of the office.
Which of the following is the BEST to utilize in these areas?

A Single-mode fiber-optic cabling
B Cat 5e-rated cabling
C Cat 6-rated cabling
D Plenum-rated cabling

A

ANSWER IS D

23
Q

A network technician receives a spool of Cat 6a cable and is asked to build several cables for a new set of Ethernet runs
between devices. Which of the following tools are MOST likely needed to complete the task? (Choose three.)

A  Wire stripper
B  Cable crimper
C  RJ-11 connectors
D  RJ-45 connectors
E  Multimeter
F  Punchdown tool
G  Tone generator
A

ANSWER ARE A B & D

24
Q

As part of a transition from a static to a dynamic routing protocol on an organization’s internal network, the routing
protocol must support IPv4 and VLSM. Based on those requirements, which of the following should the network administrator use? (Choose two.)

A  OSPF
B  IS-IS
C  RIPv1
D  BGP
E  VRRP
A

ANSWER IS A & B

25
Q

A telecommunications provider has just deployed a new OC-12 circuit at a customer site. While the circuit showed no
errors from the provider end to the customer’s demarcation point, a network administrator is trying to determine the
cause of dropped packets and errors on the circuit. Which of the following should the network administrator do to rule out
any problems at Layer 1? (Choose two.)

A Use a loopback at the demark and router, and check for a link light
B Use an OTDR to validate the cable integrity
C Use a pinout tester to validate the cable integrity
D Use a multimeter to validate the cable integrity
E Check for any devices that may be causing EMI on the cable
F Clean the cables to be sure they are free of dust and debris

A

ANSWER IS A & B