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

Question No: 1 – (Topic 1)

Which of the following OSI model layers is used for logical addressing?

1. Physical

2. Transport

3. Network

4. Data link

Answer: C

Question No: 2 – (Topic 1)

Which of the following protocols uses port 3389?

1. IMAP

2. DHCP

3. SSH

4. RDP

Answer: D

Question No: 3 – (Topic 1)

Which of the following is a public class C IP address?

A. 4.2.2.2

B. 194.178.12.54

C. 175.35.46.60

D. 192.168.1.34

Answer: B

Question No: 4 – (Topic 1)

How many collision domains and broadcast domains are present on a 24-port switch with no VLAN assignments?

1. 1 collision domain, 1 broadcast domain

2. 1 collision domain, 24 broadcast domains

3. 24 collision domains, 1 broadcast domain

4. 24 collision domains, 24 broadcast domains

Answer: C

Question No: 5 – (Topic 1)

Lisa, an administrator, attempts to open a web page and sees the following error: ‘Error 404: Page not found’. She then uses the ping command and finds that the default gateway cannot be pinged. At which of the following layers does the problem MOST likely reside?

1. Layer 1

2. Layer 4

3. Layer 5

4. Layer 7

Answer: A

Question No: 6 – (Topic 1)

Which of the following is the broadcast address for a network defined as 192.168.0.0/24?

A. 192.168.0.255

B. 192.168.0.1

C. 192.168.0.0

D. 192.168.0.253

Answer: A

Question No: 7 – (Topic 1)

Which of the following DNS records would a web browser access to determine the IP address of an Internet web page?

1. CNAME

2. A

3. MX

4. PTR

Answer: B

Question No: 8 – (Topic 1)

Which of the following protocols is MOST commonly associated with VoIP?

1. LDAP

2. HTTPS

3. SIP

4. SCP

Answer: C

Question No: 9 – (Topic 1)

Which of the following should be used when throughput to the destination network is a priority?

1. MTU

2. Hop count

3. Reliability of the path

4. Bandwidth

Answer: D

Question No: 10 – (Topic 1)

An administrator is using a packet sniffer to try to determine what is causing the traffic on the network. The administrator sees a lot of packets on port 25. Which of the following traffic types is MOST likely using port 25?

1. SMTP

2. SSH

3. DNS

4. TELNET

Answer: A

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