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Question 101
Under which of the following layers of the OSI model do ATM cells operate?
- A: Data link
- B: Network
- C: Session
- D: Transport
- E: Presentation
Question 102
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
Question 103
A network technician is configuring a wireless network at a branch office. Users at this office work with large files and must be able to access their files on the server quickly. Which of the following 802.11 standards provides the MOST bandwidth?
- A: a
- B: ac
- C: g
- D: n
Question 104
A new building needs to be joined to an existing network, but management has decided that running fiber is too expensive. Since the buildings are about 1000ft
(305m) apart, the IT department has been asked to propose alternatives. Which of the following is the BEST device to add to each building to facilitate the extension of the network while meeting budgetary demands?
- A: Switch
- B: Router
- C: Media converter
- D: PRP wireless
Question 105
A junior network technician is working in the field and needs to connect to the company's remote server, however, doing so will require the junior technician to use the public Internet. Because security is a concern, which of the following is the BEST method to use?
- A: Telnet
- B: SSH
- C: SFTP
- D: VNC
Question 106
A home user has purchased a new smart TV to stream online video services. The smart TV is unable to connect to the wireless network after several attempts.
After returning from vacation, the home user tries again and can connect the TV to the wireless network. However, the user notices a laptop is no longer able to connect to the network. Which of the following is the MOST likely cause?
- A: The DHCP scope has been exhausted.
- B: The security passcode has been changed.
- C: The SSID is hidden.
- D: The AP configuration was reset.
Question 107
A security guard notices an authorized individual, who is dressed like a lab technician, has entered a secure area of the hospital with a large group. Which of the following security attacks is taking place?
- A: Evil twin
- B: Social engineering
- C: Insider threat
- D: Phishing
Question 108
Which of the following DNS record types allows IPv6 records to be resolved to DNS names?
- A: PTR
- B: A
- C: AAAA
- D: SRV
Question 109
A network technician has recently installed new VoIP phones at all employee's desks to support a new SIP cloud VoIP solution. However, the technician is unable to make a call from the device after testing. Which of the following should the technician verify? (Choose two.)
- A: TCP 443 is allowed.
- B: UDP 1720 is allowed.
- C: UDP 5060 is allowed.
- D: UDP 5061 is allowed.
- E: TCP 8080 is allowed.
- F: TCP 8181 is allowed.
Question 110
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
Question 111
Which of the following provides two-factor authentication?
- A: Username + password
- B: Smart card + PIN
- C: Fingerprint + retina scan
- D: Key fob + ID card
Question 112
A technician is performing a maintenance task on a weekly basis and wants to ensure the task is properly documented and able to be performed by other technicians. Which of the following types of documentation should the technician complete?
- A: Standard operating procedure
- B: Work order
- C: Performance baseline
- D: Logical diagram
- E: Change management
Question 113
A network administrator configures a router with the following IP address information:
Gigabit Ethernet 1 Interface: 10.10.0.1/24
Serial 0 Interface: 10.10.0.253/30
Clients are connected to a switch on the gigabit Ethernet interface; the ISP is connected to the Serial 0 interface. When the router configuration is complete and client devices are reconfigured, all clients report that they are unable to connect to the Internet. Which of the following is the MOST likely reason?
- A: The router was configured with an incorrect IP address
- B: The router was configured with an incorrect default gateway
- C: The router was configured with an incorrect subnet mask
- D: The router was configured with an incorrect loopback address
Question 114
A company is allowing its employees to use their personal computers, tablets, and IoT devices while at work. However, there are rules and guidelines to which employees must adhere. Which of the following documents applies to these employees?
- A: NDA
- B: SOP
- C: BYOD
- D: SLA
Question 115
Which of the following are characteristics of jumbo frames? (Choose two.)
- A: Commonly used on SAN
- B: MTU size greater than 1500
- C: MTU size greater than 10000
- D: Commonly used on IaaS
- E: MTU size greater than 12000
Question 116
A network administrator gets a call regarding intermittent network outages across the country. Which of the following should be used to connect to the network so the administrator can troubleshoot this issue from home? (Choose two.)
- A: FTP
- B: SMTP
- C: VPN
- D: SSH
- E: SNMP
Question 117
A network technician downloaded new firmware for the company firewall. Which of the following should the network technician verify to ensure the downloaded file is correct and complete?
- A: File hash
- B: File date
- C: File type
- D: File size
Question 118
A technician is troubleshooting network connectivity issues with a remote host. Which of the following tools would BEST inform the technician of nodes between the client and the remote host? (Choose two.)
- A: tracert
- B: ping
- C: tcpdump
- D: pathping
- E: netstat
- F: nslookup
- G: route
Question 119
Which of the following will listen on the line to ensure there is no traffic transmitting and implement a back-off timer if a collision occurs?
- A: CSMA/CD
- B: CSMA/CA
- C: MPLS
- D: OSPF
Question 120
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
Question 121
Which of the following BEST describes an exploit?
- A: A router with default credentials
- B: An open mail relay server
- C: An SNMPv1 private community
- D: A privilege escalation script
Question 122
A server in a LAN was configured to act as a gateway between all company computers and an external network. Which of the following networking devices offers the ability to increase both performance and security?
- A: Load balancer
- B: IDS
- C: Proxy server
- D: Wireless controller
Question 123
A technician is setting up VoIP phones on a wireless network. Users report that calls are choppy and sometimes dropped. The technician has measured two characteristics using simple command-line tools that verify the problem. Which of the following characteristics did the technician measure? (Choose two.)
- A: Reflection
- B: Latency
- C: Interference
- D: Packet loss
- E: Signal-to-noise ratio
- F: Attenuation
Question 124
A penetration tester has been tasked with reconnaissance to determine which ports are open on the network. Which of the following tasks should be done FIRST?
(Choose two.)
- A: Network scan
- B: Banner grab
- C: Tracert
- D: DHCP server check
- E: Brute-force attack
Question 125
Which of the following ports should a network technician open on a firewall to back up the configuration and operating system files of a router to a remote server using the FASTEST method possible?
- A: UDP port 22
- B: TCP port 22
- C: TCP port 25
- D: UDP port 53
- E: UDP port 69
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