Network Software Tools and Commands

Question 1

Consider the following output:
C:> arp -a
Interface: 172.16.202.128 — 0xb
Internet Address Physical Address Type
172.16.202.2 00-50-56-fd-65-2c dynamic
172.16.202.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.252 01-00-5e-00-00-fc static
255.255.255.255 ff-ff-ff-ff-ff-ff static
In this example, what is the MAC address corresponding to the IP address
172.16.202.2?
a. ff-ff-ff-ff-ff-ff
b. 00-50-56-fd-65-2c
c. 01-00-5e-00-00-16
d. 01-00-5e-00-00-fc

Answer 1

Answer: b. The arp command permits you to see the IP-address-to-MACaddress mappings. You can read them from left to right.

Question 2

What option would you specify after the ipconfig command to display the
IP address of a Windows PC’s DNS server?
a. No option is needed because ipconfig displays DNS server information
by default.
b. /full
c. /fqdn
d. /all

Answer 2

Answer: d. You can use the /all switch to learn many additional details about
the IP configuration, including DNS details.

Question 3

What protocol is used by the ping command?
a. IGMP
b. PIM
c. ICMP
d. RTP

Answer 3

Answer: c. The ping command uses ICMP.

Question 4

Which of the following commands is used on a UNIX host to generate information about each router hop along the path from a source to a destination?
a. ping -t
b. tracert
c. ping -r
d. traceroute

Answer 4

Answer: d. You use traceroute in UNIX to follow the hop-by-hop path that a
packet takes.

Question 5

Which of the following UNIX commands can be used to check FQDN-to-IP
address resolution? (Choose three.)
a. nslookup
b. netstat
c. dig
d. host

Answer 5

Answer: a, c, d. You can use the UNIX commands nslookup, dig, and host to
verify DNS operations

Question 6

What command produced the following snippet of output?
OUTPUT OMITTED…
;; global options: +cmd
;; Got answer:
;; -»HEADER«- opcode: QUERY, status: NOERROR, id: 62169
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;pearsonitcertification.com. IN A
;; ANSWER SECTION:
pearsonitcertification.com. 10800 IN A 64.28.85.25
;; Query time: 202 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Wed Jun 1 20:41:57 2011
;; MSG SIZE rcvd: 60
OUTPUT OMITTED…
a. traceroute -d pearsonitcertification.com
b. dig pearsonitcertification.com
c. netstat -a pearsonitcertification.com
d. nbtstat pearsonitcertification.com

Answer 6

Answer: b. This output is an example of output from the dig command.

Question 7

Which tool would be used as part of a wireless site survey and produces a heat
map?
a. Bandwidth tester
b. WiFi analyzer
c. port scanner
d. iperf

Answer 7

Answer: b. A WiFi analyzer is a tool that would be used as part of a wireless
site survey after WiFi has been implemented to create a heat map of the wireless airspace.

Answer 8

Answer: c. The show route command is used to view the routing table configuration of a network device.

Question 9

What command is used to view the routing table configuration of a network
device?
a. show config
b. show interface
c. show route
d. show tcpdump

Answer 9

Answer: c. The show route command is used to view the routing table configuration of a network device.