[Free] 2018(June) Dumps4cert CompTIA JK0-023 Dumps with VCE and PDF Download 661-670

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2018 May CompTIA Official New Released JK0-023
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CompTIA Network certification

Question No: 661 – (Topic 6)

A new user is reporting connectivity issues. Zach, the network technician, notices that there is no link light on the user’s NIC. Which of the following would be used to verify the wiring back to the patch panel?

1. Butt set

2. Cable certifier

3. Toner probe

4. Snips

Answer: B

Question No: 662 – (Topic 6)

The Network Interface Layer of the TCP/IP model corresponds to which of the following layers of the OSI model? (Select TWO).

1. Network

2. Session

3. Transport

4. Physical

5. Data link

Answer: D,E

Question No: 663 – (Topic 6)

A network administrator is tasked with blocking unwanted spam is being relayed by an internal email server. Which of the following is the FIRST step in preventing spam that is originating from bots on the network?

1. Closing off port 25 on the firewall

2. Closing off port 53 on the firewall

3. Turning off the SMTP service on the email server

4. Turning off the IMAP service on the email server

Answer: A

Question No: 664 – (Topic 6)

Lisa, a user, reports increased delays and timeouts when trying to reach several Internet sites. Which of the following would MOST likely be used when investigating the problem at Lisa’s workstation?

1. nslookup

2. route

3. nbtstat

4. arp

Answer: A

Question No: 665 – (Topic 6)

A technician would like to connect two separate LAN networks at a small business for a short period of time, to share files. The connection needs to be temporary, and is physically impossible using standard network cabling. Which of the following is the BEST way to connect the networks in this situation?

1. Wireless repeater

2. Wireless bridge

3. Bluetooth

4. RADIUS server

Answer: B

Question No: 666 – (Topic 6)

A user has no network connectivity. Jeff, the network technician, is unable to locate the CAT5e cable from the user at the IDF. Which of the following tools would be used to assist Jeff in locating the CAT5e cable?

1. Butt set

2. Punch down tool

3. Toner probe

4. Protocol analyzer

Answer: C

Question No: 667 – (Topic 6)

Which of the following wireless standards has a MAXIMUM speed of only 1Mbps?

A. IrDA

B. 802.11b

C. Bluetooth

D. 802.11g

Answer: C

Question No: 668 – (Topic 6)

A technician is looking to secure an entire network by blocking all non-essential ports. Which of the following devices would BEST provide this functionality?

1. Firewall

2. Honeynet

3. IDS

4. IPS

Answer: A

Question No: 669 – (Topic 6)

A customer has not been using security on a wireless network and has recently received many attacks through this vector. Which of the following would be the MOST secure way to harden this wireless network?

1. Disable the SSID

2. WPA encryption

3. VLAN implementation

4. WEP encryption

Answer: B

Question No: 670 – (Topic 6)

At which layer of the TCP/IP model would cabling exist?

1. Network Interface

2. Internet

3. Application

4. Transport

Answer: A

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