Network+ Chapter 5

What type of fiber cable problem is caused when pairing a 50-micron core cable with a 62.5-micron core cable? Tx/Rx reverse Dirty connectors Wavelength mismatch Fiber type mismatch

Fiber Type mismatch

Which part of a toner and probe kit emits an audible tone when it detects electrical activity on a wire pair? Toner Tone locator TDR Tone generator

tone locator

Suppose you're creating patch cables to be used in a government office. What color wire goes in the first pin? Blue White/green Brown White/orange

white/green

To troubleshoot a network problem, you are required to use a packet analyzer on a Unix based system. Which of the following command line interface commands will provide you with the required functionality? tcproute nslookup netstat tcpdump ifconfig

The command tcpdump is a common packet analyzer that runs under the command line on Unix-based systems. It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.

Which kind of multiplexing assigns slots to nodes according to priority and need? TDM (time division multiplexing) CWDM (coarse wavelength division multiplexing) WDM (wavelength division multiplexing) STDM (statistical time division multiplexing)

STDM (statistical time division multiplexing)

Which transmission characteristic is never fully achieved? Throughput Bit rate Latency Bandwidth

Bandwidth

Which of these categories of twisted-pair cable can support Gigabit Ethernet? Cat 5, Cat 6, Cat 7 Cat 5e, Cat 6a, Cat 7 Cat 6, Cat 7a, Cat 5 Cat 5e, Cat 6, Cat 3

Cat 5e, Cat 6a, Cat 7

What kind of cable uses BNC connectors? Which connector is likely to be used by cable TV? Twisted-pair cable, RJ-11 Coaxial cable, F-connector Fiber-optic cable, MTRJ Copper cable, RJ-45

Coaxial cable, F-connector

You are asked to perform an analysis on the network that will allow you to deduce information from patterns in communication. Which of the following types of analysis are you asked to perform? Device log review Identify network vulnerabilities Compare network performance to baselines Data traffic analysis

Data traffic analysis

You have been experiencing connectivity with various websites. The response time to open these websites is high. You tested the same websites from your home and could open them much faster. You assume that the slow access to the Websites might be due to high latency. Which of the given utility is likely to help you in finding the source that may be causing the latency issue? Nslookup Traceroute Ping Netstat

Latency is a time interval between a cause and response that it invokes in a system being observed. Network latency in a packet-switched network is a one-way (or round-trip delay time) for a signal to travel from the source to the destination. Latency includes the time necessary for intermediary network devices to receive, process and send data on its way. In the given scenario, if you want to find the source of the latency, you will need to use traceroute. Ping can only help in confirming latency but not really identify the source.

Which fiber connector contains two strands of fiber in each ferrule? LC ST SC MTRJ

MTRJ

Which kind of crosstalk occurs between wire pairs near the source of the signal? FEXT Alien NEXT Tx/Rx reverse

NEXT

If you need to perform port scanning in your network, which of the following tool are you likely to use? [Choose all that apply]. Angry IP Scanner Cain and Abel Superscan tcpdump Wireshark

Port scanning is a process that sends client requests to a range of server port addresses on a host, with the goal of finding an active port. Other than Nmap, the other two known port scanners are SuperScan and Angry IP Scanner.

Why would a network administrator implement vulnerability scanning on a network? To examine network device event logs To reveal vulnerabilities in the network To return a network device to its previous settings To identify open ports on a server

To reveal vulnerabilities in the network

What is the earliest twisted-pair cabling standard that meets the minimum requirements for 10GBase-T transmissions? Cat 5e Cat 5 Cat 7 Cat 6a

cat 6a