HW- CH 21
Which ipconfig command switch would a technician use to display detailed information (such as DNS servers and MAC addresses)?
/all
Which term is another name for a switching loop?
Bridging loop
Which tool helps a technician make unshielded twisted pair (UTP) cables?
Cable stripper
Which tool can be used to notify a technician of a continuity problem or if a wire map is not correct?
Cable tester
Which tool tests a cable to ensure that it can handle its rated amount of capacity?
Certifier
With misconfigured proxy ARP settings, the VPN concentrator can send what looks like a __________ attack on the LAN?
Dos denial of service
Multimeters test frequency.
False
Which CISCO protocol will help prevent downtime due to failures on the default gateway?
HSRP
__________ problems manifest themselves as intermittent problems.
Heat and power
Which term is another name for an optical power meter?
Light meter
Which tool can be used to notify a technician where a cable break is occurring on a fiber cable?
OTDR
Which tool intercepts and logs network packets?
Packet sniffer.
Which utility is categorized in the CompTIA Network+ exam as a hardware tool?
Protocol analyzer
Which tool puts UTP wires into 66- and 110-blocks?
Punchdown tool
Which tool can be used to notify a technician where a cable break is occurring on a copper cable?
TDR
Which tool is falls into the category of a third-party software tool?
Throughput tester
Which tool has only one job: to help a technician locate a particular cable?
Tone generator
Computers use the Address Resolution Protocol (ARP) utility to resolve IP addresses to MAC addresses.
True
Which command, while not available on Windows, can be used on macOS/UNIX/Linux systems to diagnose DNS problems?
dig
The Internet was founded on the __________ principle.
end to end
Broken cables cause intermittent problems.
false
In a Windows system, a technician runs the ip utility.
false
The ping utility uses Simple Network Management Protocol (SNMP) packets to query by IP address or by name.
false
The vast majority of cabling problems occur long after a successful network installation.
false
Which task is the first step in the troubleshooting process?
identify the problem
A cable might experience crosstalk, where the electrical signal bleeds from one wire pair to another, creating __________.
interference
Which Linux command can be used to view IP settings?
ip
Which command can be used on a Windows computer to view the IP settings?
ipconfig
Which command is a dynamic (keeps running) equivalent to traceroute?
mtr
Which tool is an example of a GUI port scanner and protocol analyzer?
nmap
Which command would a technician use to diagnose DNS problems on a Windows computer?
nslookup
Microsoft has a utility called __________ that combines the functions of ping and tracert and adds some additional functions.
pathping
Which utility uses Internet Message Control Protocol (ICMP) packets to query by IP or by name?
ping
Which utilities are excellent examples of connectivity software, applications that enable you to determine if a connection can be made between two computers?
ping and traceroute
Most packet sniffers come bundled with a __________, the tool that takes the sniffed information and figures out what's happening on the network.
protocol analyzer
Which utility enables you to display and edit the local system's routing table?
route
Which command used in Linux is faster and more powerful than netstat?
ss
Which tool is a command line alternative to Wireshark?
tcpdump
Which software tool is built into operating systems?
traceroute
Which utility can be used to diagnose where a problem lies when you have problems reaching a remote system?
traceroute
A VPN is a classic example of a situation in which Proxy ARP is used.
true
Different networking jobs require wildly different tools.
true
Hot Standby Router Protocol (HSRP) is a Cisco feature.
true
Switching loops are rare.
true
The only time a technician would use a punchdown tool in a diagnostic environment is a quick repunch of a connection to make sure all the contacts are properly set.
true
The traceroute command defaults to IPv4.
true
The traceroute utility is used to trace all of the routers between two points.
true
When a cable is not broken but it's not moving data the way it should, turn to a certifier for diagnostics.
true
When troubleshooting a problem, a technician needs to select the most probable cause from all the possible causes.
true
Which tool is an example of a packet sniffer?
wireshark
