JK0-023 Online Practice Questions and Answers

Which of the following ports is the default telnet port?

A. 20

B. 21

C. 22

D. 23

Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?

A. Switch

B. Hub

C. Router

D. Repeater

Which of the following is a purpose of a VLAN?

A. Decreases bandwidth on a network

B. Segments broadcast trafc

C. Increases port speed

D. Allows another connecton to the router

Which of the following TCP/IP and OSI model layers retransmits a TCP packet if it is not received successfully at its destnaton?

A. The transport OSI model layer and the transport TCP/IP model layer.

B. The transport OSI model layer and the Internet TCP/IP model layer.

C. The network OSI model layer and the transport TCP/IP model layer.

D. The network OSI model layer and the Internet TCP/IP model layer.

In an environment with STP disabledf which of the following is the MOST likely cause of the exponental increase in repeated packets transferred through the network?

A. Incorrect subnet mask

B. Mismatched MTU

C. Switching loop

D. VLAN mismatch

Which of the following is a common connector used on a coaxial cable?

A. RJ-45

B. DB-25

C. BNC

D. LC

Which of the following is a fber connector type?

A. F-connector

B. RJ-11

C. RS-232

D. MTRJ

A user has network connectvity per the link lights on the NICf but cannot access any network resources or the Internet. Which of the following commands should the technician run FIRST?

A. arp

B. ipconfg

C. tracert

D. route

An administrator is trying to retrieve management informaton from the network devices on their LAN. Which of the following monitoring resources provides the ability to collect this informaton encrypted over the network?

A. SNMPv3

B. VTP

C. CDP

D. IPSec

The selecton of the correct punch down tool to use depends on which of the following?

A. Connector type

B. Demarcaton point locaton

C. Block type

D. Switch locaton

Lisaf a network administratorf wants to be able to block all already known malicious actvity. Which of the following would allow her to perform this actvity?

A. Behavioral Based IDS

B. Signature Based IDS

C. Behavioral Based IPS

D. Signature Based IPS

Which of the following would be the BEST soluton for an IDS to monitor known atacks?

A. Host-based

B. Signature-based

C. Network-based

D. Behavior-based

A company only wants preapproved laptops to be able to connect to a wireless access point. Which of the following should be confgured?

A. SSID disable

B. ACL rules

C. WPA encrypton

D. MAC fltering

Which of the following commands can be used on a server to display IP informaton for a given interface?

A. nbtstat

B. dig

C. ifconfg

D. msconfg

No link lights on a switchns SFP are functoningf so the network technician re-terminates the end. Afer testng the cablef the tester is showing a db loss of -9. Which of the following types of cable is MOST likely being tested?

A. Fiber

B. CAT3

C. CAT5e

D. CAT6a