Chapter 2

Question 1

An IPv6 address consists of how many bits?
A) 32
B) 48
C) 96
D) 128

Answer 1

D) 128

Question 2

A port number, which identifies an application on a host, exists at what level of the OSI model?
A) Application
B) Transport
C) Network
D) Data Link

Answer 2

B) Transport

Question 3

What are the last two parts of a host name known as?
A) Top Level Domain
B) Fully qualified domain name (FQDN)
C) Domain Name
D) Host Qualifier

Answer 3

C) Domain Name

Question 4

What do the first 24 bits of a MAC address represent?
A) Organizationally Unique Identifier
B) Device ID
C) Extension ID
D) Network ID

Answer 4

A) Organizationally Unique Identifier

Question 5

What command below can be used to display a complete summary of all network interfaces in a Windows computer?
A) ipconfig /a
B) ipconfig /all
C) ipconfig /list
D) ipconfig /show

Answer 5

B) ipconfig /all

Question 6

What top level domain is used for the air-transport industry?
A) .air
B) .aero
C) .tport
D) .intl

Answer 6

B) .aero

Question 7

How many clusters of root servers exist?
A) 8
B) 10
C) 13
D) 15

Answer 7

C) 13

Question 8

What range of ports is referred to as the "well-known" range of ports?
A) 0-1023
B) 1024-49151
C) 49152-65535
D) 500-1024

Answer 8

A) 0-1023

Question 9

A loopback IP address begins with what number?
A) 254
B) 127
C) 169
D) 192

Answer 9

B) 127

Question 10

In Linux systems, what file contains the settings for the DHCP service?
A) dhcpd.conf
B) dhcp.ini
C) dhcpd.cfg
D) dhcp.cf

Answer 10

A) dhcpd.conf

Question 11

What command on Linux will display TCP/IP information associated with every interface on the device?
A) ifconfig /all
B) ifconfig -a
C) ipconfig -a
D) ipconfig /all

Answer 11

B) ifconfig -a

Question 12

Which protocol below is used to make an initial connection between hosts for transferring multimedia data, relying on other protocols once a connection is established?
A) SMB
B) SIP
C) H.323
D) NTP

Answer 12

B) SIP

Question 13

The Network Time Protocol service uses what port number?
A) TCP 123
B) TCP 89
C) UDP 123
D) UDP 90

Answer 13

C) UDP 123

Question 14

Select the name of the free, open source software that is by far the most popular DNS server software:
A) Microsoft DNS
B) BIND
C) Oracle Resolver
D) Dnsmasq

Answer 14

B) BIND

Question 15

Select the protocol below that is used to synchronize clocks on computers on a network:
A) SMTP
B) NTP
C) SIP
D) CIFS

Answer 15

B) NTP

Question 16

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?
A) traceroute
B) ifconfig
C) ping
D) route

Answer 16

C) ping

Question 17

What RFC outlines recommendations for private IP addresses?
A) RFC 1900
B) RFC 1918
C) RFC 638
D) RFC 2332

Answer 17

B) RFC 1918

Question 18

What protocol is commonly used to request configuration files from another computer?
A) SNMP
B) SIP
C) SMB
D) TFTP

Answer 18

D) TFTP

Question 19

What two types of IP addresses are used on the internet?
A) IPv4
B) IPv6
C) IPX
D) IPng

Answer 19

A) IPv4

B) IPv6

Question 20

Traditional MAC addresses are broken into two parts. Name these two parts.
A) blick ID
B) primary octect
C) secondary octet
D) device ID

Answer 20

A) block ID

D) device ID

Question 21

What two names are used to descibe the configuration in which internal and external DNS queries are handled by different DNS servers or by a single DNS server that is specially configured to keep internal and external DNS zones separate?
A) walled-DNS
B) split DNS
C) split-horizon DNS
D) DMZ DNS

Answer 21

B) split DNS

C) split-horizon DNS

Question 22

What two ipconfig commands below are used to show DNS resolver cache information and clear the name resolver cache?
A) ipconfig /releasedns 
B) ipconfig /alldns 
C) ipconfig /displaydns 
D) ipconfig /flushdns

Answer 22

C) ipconfig /displaydns

D) ipconfig /flushdns