CNAB PREP COMPREHENSIVE EXAM 2026
FULL QUESTIONS AND ANSWERS
GUARANTEED TO PASS
⩥ POP3. Answer: TCP 110
used to retrieve mail from the mail server
⩥ dual stacking. Answer: Loading both IPv4 and IPv6 on network
nodes. Allows a machine to utilize either protocol
⩥ egrep. Answer: Searches a file or files for lines that contain strings of
a certain pattern
⩥ netstat. Answer: provides information and statistics about protocols in
use and current TCP/IP network connections
⩥ netstat -a. Answer: All connections and listening ports
⩥ netstat -b. Answer: executable associated with creating each
connection
⩥ netstat -e. Answer: Displays Ethernet statistics
,⩥ netstat -f. Answer: Displays fully qualified domain names (FQDNs)
for foreign addresses
⩥ netstat -n. Answer: Displays addresses and port numbers in numerical
form.
⩥ Windows Registry. Answer: read during: boor, application startup,
user login
⩥ NAT. Answer: network address translation, connecting multiple
computers to the internet using one or multiple IP addresses
⩥ static NAT. Answer: Allows for one to one translation of local to
global addresses
⩥ dynamic NAT. Answer: Maps an unregistered IP address to a
registered IP address from a group of registered
IP addresses.
⩥ PAT. Answer: Port Address Translation (Overloading) translates
multiple local addresses to a single global address by keeping track of
port assignments
,⩥ Secondary memory/storage. Answer: long-term, non volatile storage
media e.g. hard disk
⩥ Hardware. Answer: The physical components of a computer.
⩥ Software. Answer: the programs and other operating information used
by a computer.
⩥ Firmware. Answer: computer software that is installed into devices
such as printers, print servers, and various types of communication
devices
⩥ Windows page file. Answer: C:\pagefile.sys
⩥ Bit bucket. Answer: a logical place where lost, deleted, or unavailable
data goes
⩥ tasklist /s. Answer: specifies the name or IP address of a remote
computer.
⩥ tasklist /u. Answer: runs command with the account perssoion of the
user who is specified.
⩥ tasklist /p. Answer: specifies the password of the user account.
, ⩥ tasklist /m. Answer: lists all tasks with DLL modules loaded that
match the given pattern.
⩥ tasklist /v. Answer: displays verbose task information in output.
⩥ TTL for Windows. Answer: 128
⩥ TTL for linux. Answer: 64
⩥ IPv6 Bit Length. Answer: 128 bits (d eight segments of 16-bit
hexadecimal numbers)
⩥ IPv4 Bit Length. Answer: 32 bits = 4 bytes
⩥ Kerebros client side .dll. Answer: kerebros.dll
⩥ Kerebros server side .dll. Answer: kdcsvc.dll
⩥ kerebros key distribution center (KDC). Answer: domain controllers
act as KDCs, LSA uses kdcsvc.dll
FULL QUESTIONS AND ANSWERS
GUARANTEED TO PASS
⩥ POP3. Answer: TCP 110
used to retrieve mail from the mail server
⩥ dual stacking. Answer: Loading both IPv4 and IPv6 on network
nodes. Allows a machine to utilize either protocol
⩥ egrep. Answer: Searches a file or files for lines that contain strings of
a certain pattern
⩥ netstat. Answer: provides information and statistics about protocols in
use and current TCP/IP network connections
⩥ netstat -a. Answer: All connections and listening ports
⩥ netstat -b. Answer: executable associated with creating each
connection
⩥ netstat -e. Answer: Displays Ethernet statistics
,⩥ netstat -f. Answer: Displays fully qualified domain names (FQDNs)
for foreign addresses
⩥ netstat -n. Answer: Displays addresses and port numbers in numerical
form.
⩥ Windows Registry. Answer: read during: boor, application startup,
user login
⩥ NAT. Answer: network address translation, connecting multiple
computers to the internet using one or multiple IP addresses
⩥ static NAT. Answer: Allows for one to one translation of local to
global addresses
⩥ dynamic NAT. Answer: Maps an unregistered IP address to a
registered IP address from a group of registered
IP addresses.
⩥ PAT. Answer: Port Address Translation (Overloading) translates
multiple local addresses to a single global address by keeping track of
port assignments
,⩥ Secondary memory/storage. Answer: long-term, non volatile storage
media e.g. hard disk
⩥ Hardware. Answer: The physical components of a computer.
⩥ Software. Answer: the programs and other operating information used
by a computer.
⩥ Firmware. Answer: computer software that is installed into devices
such as printers, print servers, and various types of communication
devices
⩥ Windows page file. Answer: C:\pagefile.sys
⩥ Bit bucket. Answer: a logical place where lost, deleted, or unavailable
data goes
⩥ tasklist /s. Answer: specifies the name or IP address of a remote
computer.
⩥ tasklist /u. Answer: runs command with the account perssoion of the
user who is specified.
⩥ tasklist /p. Answer: specifies the password of the user account.
, ⩥ tasklist /m. Answer: lists all tasks with DLL modules loaded that
match the given pattern.
⩥ tasklist /v. Answer: displays verbose task information in output.
⩥ TTL for Windows. Answer: 128
⩥ TTL for linux. Answer: 64
⩥ IPv6 Bit Length. Answer: 128 bits (d eight segments of 16-bit
hexadecimal numbers)
⩥ IPv4 Bit Length. Answer: 32 bits = 4 bytes
⩥ Kerebros client side .dll. Answer: kerebros.dll
⩥ Kerebros server side .dll. Answer: kdcsvc.dll
⩥ kerebros key distribution center (KDC). Answer: domain controllers
act as KDCs, LSA uses kdcsvc.dll
