CCNA 200-301 Exam Questions and Answers
(Verified Answers) (Latest Update 2026)
UPDATE!!
consistency throughout a common administrative domain by
managing VLAN additions, deletions, and name changes across
multiple switches. Without VTP, you would have to manually
add VLAN information to each switch in the network. What is
CDP? - ANSWER//Cisco Discovery Protocol (CDP) is a Cisco
Proprietary feature that allows you to see directly connected
Cisco devices. CDP can provide VLAN Trunking Protocol (VTP)
information whereas LLDP does not. What is FlexConnect? -
ANSWER//Software basically. (previously known as Hybrid
Remote Edge Access Point or H-REAP) is a wireless solution for
branch office and remote office deployments. It enables
customers to configure and control access points (AP) in a
branch or remote office from the corporate office through a
wide area network (WAN) link without deploying a controller in
each office. The FlexConnect access points can switch client
data traffic locally and perform client authentication locally
when their connection to the controller is lost. When they are
connected to the controller, they can also send traffic back to
the controller. In the connected mode, the FlexConnect access
point can also perform local authentication. Number of host on
a /24 and it subnet mask - ANSWER//256; 255.255.255.0
Number of host on a /23 and it subnet mask - ANSWER//512;
255.255.254.0 Host on a /22 and it subnet mask -
ANSWER//1024; 255.255.252.0 Host on a /21 and it subnet
mask - ANSWER//2048; 255.255.248.0 Host on a /19 and it
subnet mask - ANSWER//8192; 255.255.224.0 Host on a /18
and it subnet mask - ANSWER//16384; 255.255.192.0 Host on a
/25 and it subnet mask - ANSWER//128; 255.255.255.128 Host
on a /26 and it subnet mask - ANSWER//64; 255.255.255.192
,Host on a /27 and it subnet mask - ANSWER//32;
255.255.255.224 Host on a /28 and it subnet mask -
ANSWER//16; 255.255.255.240 Host on a /29 and it subnet
mask - ANSWER//8; 255.255.255.248 Host on a /30 and it
subnet mask - ANSWER//4; 255.255.255.252 Host on a /31 and
it subnet mask - ANSWER//2; 255.255.255.254 Host on a /32
and it subnet mask - ANSWER//1; 255.255.255.255 Host on a
/17 and it subnet mask - ANSWER//32768; 255.255.128.0 Host
on a /16 and it subnet mask - ANSWER//65536; 255.255.0.0
What is the reserved ranges on RFC 1918? - ANSWER//10.0.0.0-
10.255.255.255 172.16.0.0-172.31.255.255 192.168.0.0-
192.168.255.255 What is the reserved range for loopback
addresses? - ANSWER//127.0.0.0-127.255.255.255 What is the
Class A range of addresses? - ANSWER//10.0.0.0 -
10.255.255.255 What is the Class B range of addresses? -
ANSWER//172.16.0.0 - 172.31.255.255 What is the Class C
range of addresses? - ANSWER//192.168.0.0 - 192.168.255.255
What do unique local IPv6 unicast prefix always begin with? -
ANSWER//FD or FC Because the first 7 bits of a unique local
unicast address are always 1111110 They can not be
aggregatable nor summarized. What is the address range if a
host IP can not obtain a network address via DHCP? -
ANSWER//169.254.1.0 to 169.254.254.255 What protocol uses
UDP and TCP? - ANSWER//DNS (Domain Name System) IPv6
multicast address? - ANSWER//FF00::/8 IPv6 Unicast Link-Local
address - ANSWER//FF80::/10 Link local addresses are unicast
addresses used for communication over a __________ link -
ANSWER//single Link local addresses in IPv6 are used to form
what? - ANSWER//Neighbor adjacencies Global IPv6 unicast
addresses, also known as aggregable global address, do they
form neighbor adjacency? - ANSWER//NO. They do NOT form
neighbor adjacency. IPv6 multicast address for Link-local -
ANSWER//FF02::/16 IPv6 multicast address for Site-local -
ANSWER//FF05::/16 IPv6 multicast address for unicast site-
local - ANSWER//FC00::/7 IPv6 multicast address for global
,address - ANSWER//FF0E::/16 Are unicast link local IPv6
addreses routable? - ANSWER//NO. Used for neighbor
discovery What is HDLC? - ANSWER//The High-Level Data-Link
Control (HDLC) protocol is a populare ISO-standard, bit-
oriented, Data Link layer protocol. It specifies an encapsulation
method for data on synchronous serial data links using frame
characters and checksums. HDLC is a point-to-point protocol
used on leased lines. No authentication can be used with HDLC.
What is the difference between HDLC and PPP? - ANSWER//The
major difference between HDLC and PPP , the PPP protocol
performs better than HDLC because there is no compulsion of
using the Cisco devices in both the ends, which means these
are interoperable. PPP also supports multiple protocols and
support authentication. What is PPP? - ANSWER//Point-to-
Point Protocol (PPP) is a Data Link layer protocol that can be
used over either asynchronous serial (dial-up) or synchronous
serial (ISDN) media. It uses Link Control Protocol (LCP) to build
and maintain data-link connections. Network Control Protocol
(NCP) is used to allow multiple Network layer protocols (routed
protocols) to be used on a point-to-point connection. The basic
purpose of PPP is to transport layer 3 packets across a Data Link
layer point-to-point link, and it's nonproprietary. The PPP
protocol stack is specified at the Physical and Data Link layers
only. In 802.11 wireless topology, what is BSS in Infrastructure?
- ANSWER//Basic Service Set; Consist of a single AP
interconnecting all associated wireless clients. The radius of
which it covers in it wireless range is called a Basic Service Area
(BSA). Layer 2 MAC address of the AP is used to uniquely ID
each BSS which is called a Basic Service Set Identifier (BSSID). In
802.11 wireless topology, what is ESS in infrastructure? -
ANSWER//Extended Service Set ESS is ID by a SSID and each BSS
is ID by its BSSID. When you need more coverage, two or more
BSS can join through a common distribution system (DS) into an
ESS. The whole covered area is called an Extended Service Area
(ESA). A client in one BSA can now communicate with other
, clients in another BSA within the same ESS. Like a roaming cell
phone user may move from one BSA to another and it would be
seamless Since WLAN are half-duplex, what do we use to avoid
collision? - ANSWER//(CSMA/CA) carrier sense multiple access
with collision avoidance. What is the port number of RADIUS? -
ANSWER//1812 for authentication 1813 for accouting
1645/1646 for UDP ports AD of directly connected routing -
ANSWER//0 AD of static route - ANSWER//1 AD of internal
EIGRP - ANSWER//90 AD of OSPF - ANSWER//110 AD of RIP -
ANSWER//120 AD of External EIGRP - ANSWER//170 What
parameter does RIP use to calculate metric? - ANSWER//Hop
count What parameter does EGIRP use to calculate metric? -
ANSWER//bandwidth, delay What parameter does OSPF use to
calculate metric? - ANSWER//cost Characteristic of distance
vector? - ANSWER//-sends entire routing table -slow
convergence -doesn't know network topology -simpler to
configure -examples: RIP, IGRP Characteristics of Link state? -
ANSWER//-sends only link state information -fast convergence -
less susceptible to routing loops -always uses multicast for the
routing updates -knows the entire network topology -can be
harder to configure -examples: OSPF, IS-IS Characteristics of
CDP? - ANSWER//-60 second update frequency -180 second
hold timer (the top end timer is 255) -enabled by default -L2
protocol -Cisco proprietary -Can convey VTP information
Characteristics of LLDP? - ANSWER//-30 second update
frequency -120 second hold timer -disabled by default -L2
protocol -Open standard protocol What is the default mode of
VTP when on a new switch? - ANSWER//Server mode What is
EIGRP? - ANSWER//Enhanced Interior Gateway Routing
Protocol. Is an advanced distance vector routing protocol.
EIGRP supports classless routing and VLSM, route
summarization, incremental updates, load balancing and many
other useful features. It is a Cisco proprietary protocol, so all
routers in a network that is running EIGRP must be Cisco
routers. What metric does EIGRP use? - ANSWER//bandwidth
(Verified Answers) (Latest Update 2026)
UPDATE!!
consistency throughout a common administrative domain by
managing VLAN additions, deletions, and name changes across
multiple switches. Without VTP, you would have to manually
add VLAN information to each switch in the network. What is
CDP? - ANSWER//Cisco Discovery Protocol (CDP) is a Cisco
Proprietary feature that allows you to see directly connected
Cisco devices. CDP can provide VLAN Trunking Protocol (VTP)
information whereas LLDP does not. What is FlexConnect? -
ANSWER//Software basically. (previously known as Hybrid
Remote Edge Access Point or H-REAP) is a wireless solution for
branch office and remote office deployments. It enables
customers to configure and control access points (AP) in a
branch or remote office from the corporate office through a
wide area network (WAN) link without deploying a controller in
each office. The FlexConnect access points can switch client
data traffic locally and perform client authentication locally
when their connection to the controller is lost. When they are
connected to the controller, they can also send traffic back to
the controller. In the connected mode, the FlexConnect access
point can also perform local authentication. Number of host on
a /24 and it subnet mask - ANSWER//256; 255.255.255.0
Number of host on a /23 and it subnet mask - ANSWER//512;
255.255.254.0 Host on a /22 and it subnet mask -
ANSWER//1024; 255.255.252.0 Host on a /21 and it subnet
mask - ANSWER//2048; 255.255.248.0 Host on a /19 and it
subnet mask - ANSWER//8192; 255.255.224.0 Host on a /18
and it subnet mask - ANSWER//16384; 255.255.192.0 Host on a
/25 and it subnet mask - ANSWER//128; 255.255.255.128 Host
on a /26 and it subnet mask - ANSWER//64; 255.255.255.192
,Host on a /27 and it subnet mask - ANSWER//32;
255.255.255.224 Host on a /28 and it subnet mask -
ANSWER//16; 255.255.255.240 Host on a /29 and it subnet
mask - ANSWER//8; 255.255.255.248 Host on a /30 and it
subnet mask - ANSWER//4; 255.255.255.252 Host on a /31 and
it subnet mask - ANSWER//2; 255.255.255.254 Host on a /32
and it subnet mask - ANSWER//1; 255.255.255.255 Host on a
/17 and it subnet mask - ANSWER//32768; 255.255.128.0 Host
on a /16 and it subnet mask - ANSWER//65536; 255.255.0.0
What is the reserved ranges on RFC 1918? - ANSWER//10.0.0.0-
10.255.255.255 172.16.0.0-172.31.255.255 192.168.0.0-
192.168.255.255 What is the reserved range for loopback
addresses? - ANSWER//127.0.0.0-127.255.255.255 What is the
Class A range of addresses? - ANSWER//10.0.0.0 -
10.255.255.255 What is the Class B range of addresses? -
ANSWER//172.16.0.0 - 172.31.255.255 What is the Class C
range of addresses? - ANSWER//192.168.0.0 - 192.168.255.255
What do unique local IPv6 unicast prefix always begin with? -
ANSWER//FD or FC Because the first 7 bits of a unique local
unicast address are always 1111110 They can not be
aggregatable nor summarized. What is the address range if a
host IP can not obtain a network address via DHCP? -
ANSWER//169.254.1.0 to 169.254.254.255 What protocol uses
UDP and TCP? - ANSWER//DNS (Domain Name System) IPv6
multicast address? - ANSWER//FF00::/8 IPv6 Unicast Link-Local
address - ANSWER//FF80::/10 Link local addresses are unicast
addresses used for communication over a __________ link -
ANSWER//single Link local addresses in IPv6 are used to form
what? - ANSWER//Neighbor adjacencies Global IPv6 unicast
addresses, also known as aggregable global address, do they
form neighbor adjacency? - ANSWER//NO. They do NOT form
neighbor adjacency. IPv6 multicast address for Link-local -
ANSWER//FF02::/16 IPv6 multicast address for Site-local -
ANSWER//FF05::/16 IPv6 multicast address for unicast site-
local - ANSWER//FC00::/7 IPv6 multicast address for global
,address - ANSWER//FF0E::/16 Are unicast link local IPv6
addreses routable? - ANSWER//NO. Used for neighbor
discovery What is HDLC? - ANSWER//The High-Level Data-Link
Control (HDLC) protocol is a populare ISO-standard, bit-
oriented, Data Link layer protocol. It specifies an encapsulation
method for data on synchronous serial data links using frame
characters and checksums. HDLC is a point-to-point protocol
used on leased lines. No authentication can be used with HDLC.
What is the difference between HDLC and PPP? - ANSWER//The
major difference between HDLC and PPP , the PPP protocol
performs better than HDLC because there is no compulsion of
using the Cisco devices in both the ends, which means these
are interoperable. PPP also supports multiple protocols and
support authentication. What is PPP? - ANSWER//Point-to-
Point Protocol (PPP) is a Data Link layer protocol that can be
used over either asynchronous serial (dial-up) or synchronous
serial (ISDN) media. It uses Link Control Protocol (LCP) to build
and maintain data-link connections. Network Control Protocol
(NCP) is used to allow multiple Network layer protocols (routed
protocols) to be used on a point-to-point connection. The basic
purpose of PPP is to transport layer 3 packets across a Data Link
layer point-to-point link, and it's nonproprietary. The PPP
protocol stack is specified at the Physical and Data Link layers
only. In 802.11 wireless topology, what is BSS in Infrastructure?
- ANSWER//Basic Service Set; Consist of a single AP
interconnecting all associated wireless clients. The radius of
which it covers in it wireless range is called a Basic Service Area
(BSA). Layer 2 MAC address of the AP is used to uniquely ID
each BSS which is called a Basic Service Set Identifier (BSSID). In
802.11 wireless topology, what is ESS in infrastructure? -
ANSWER//Extended Service Set ESS is ID by a SSID and each BSS
is ID by its BSSID. When you need more coverage, two or more
BSS can join through a common distribution system (DS) into an
ESS. The whole covered area is called an Extended Service Area
(ESA). A client in one BSA can now communicate with other
, clients in another BSA within the same ESS. Like a roaming cell
phone user may move from one BSA to another and it would be
seamless Since WLAN are half-duplex, what do we use to avoid
collision? - ANSWER//(CSMA/CA) carrier sense multiple access
with collision avoidance. What is the port number of RADIUS? -
ANSWER//1812 for authentication 1813 for accouting
1645/1646 for UDP ports AD of directly connected routing -
ANSWER//0 AD of static route - ANSWER//1 AD of internal
EIGRP - ANSWER//90 AD of OSPF - ANSWER//110 AD of RIP -
ANSWER//120 AD of External EIGRP - ANSWER//170 What
parameter does RIP use to calculate metric? - ANSWER//Hop
count What parameter does EGIRP use to calculate metric? -
ANSWER//bandwidth, delay What parameter does OSPF use to
calculate metric? - ANSWER//cost Characteristic of distance
vector? - ANSWER//-sends entire routing table -slow
convergence -doesn't know network topology -simpler to
configure -examples: RIP, IGRP Characteristics of Link state? -
ANSWER//-sends only link state information -fast convergence -
less susceptible to routing loops -always uses multicast for the
routing updates -knows the entire network topology -can be
harder to configure -examples: OSPF, IS-IS Characteristics of
CDP? - ANSWER//-60 second update frequency -180 second
hold timer (the top end timer is 255) -enabled by default -L2
protocol -Cisco proprietary -Can convey VTP information
Characteristics of LLDP? - ANSWER//-30 second update
frequency -120 second hold timer -disabled by default -L2
protocol -Open standard protocol What is the default mode of
VTP when on a new switch? - ANSWER//Server mode What is
EIGRP? - ANSWER//Enhanced Interior Gateway Routing
Protocol. Is an advanced distance vector routing protocol.
EIGRP supports classless routing and VLSM, route
summarization, incremental updates, load balancing and many
other useful features. It is a Cisco proprietary protocol, so all
routers in a network that is running EIGRP must be Cisco
routers. What metric does EIGRP use? - ANSWER//bandwidth
