190 Identify the purpose of the TCP 3 step handshake?
A.) Setup a un-reliable connection
B.) Initialize routing tables
C.) Synchronize sequence numbers between hosts
D.) Connection tear down process
Ans C
The 3 step handshake establishes the parameters required for a TCP connection. During the handshake process sequence numbers are synchronized allowing for the end points to properly acknowledge and re-assemble the segments.
191 Identify 2 PPP characteristics?
A.) Is proprietary to Cisco
B.) Supports authentication
C.) Support compression
D.) Run on a multi-access network
Ans B C
PPP supports authentication; PAP and CHAP. It also supports compression; Stacker and Predictor.
192 Which statement is true regarding half duplex?
A.) Only works in a point-to-point configuration
B.) Allows for transmitting and receiving but not a the same time
C.) Allow for transmitting and receiving of data simultaneously
D.) Doubles the bandwidth
Ans B
Half duplex is analogous to a single a lane bridge, it can handle traffic in both directions but no at the same time.
193 Identify the purpose of the wildcard mask?
A.) Match a certain portion of the IP address while ignoring the rest of the address
B.) Determine the class of the IP address
C.) Determine the network portion of an IP address
D.) Hide the host portion of an IP address
Ans A
The purpose of the wildcard mask to match a certain portion of the IP address while ignoring the rest.
194 Identify the OSI layer associated with bits?
A.) Physical
B.) Network
C.) Binary
D.) Data link
Ans A
The Physical layer converts the frames to bits.
195 Identify the type of routing protocol that maintains a topological database of the network?
A.) Topological state
B.) Shortest Path First
C.) Link state
D.) Distance vector
Ans C
Link State routing protocols maintain a database that lists all the networks in the internetwork.
196 Identify the 3 major functions at layer 3 of the OSI model?
A.) Forwarding process
B.) Logical addressing
C.) End-to-end connections
D.) Path selection
E.) MAC address examination
F.) Network monitoring
Ans A B D
Layer 3 determines the path, forwards the packet and implements software or logical addressing.
197 Identify the 2 rules used when configuring a Distance Vector routing protocol?
A.) Physically connected network(s)
B.) Configure the classful address, no subnets
C.) Enable CDP so neighbors can be detected
D.) Configure all networks in Area0
Ans A B
When configuring a Distance Vector routing protocol only assign the physically connected networks with the classful address only.
198 Identify 3 characteristics of an IP address?
A.) Contains a network portion and a host portion
B.) 32 bits long
C.) Unique to each network
D.) Part of the default Cisco configuration
E.) Referred to as the hardware address
Ans A B C
An IP address is 32 bits long, it is referred as the logical or software address. It contains a network and host portion. Each IP address is unique.
199 Identify 3 feature of access-lists?
A.) Implicit deny will deny any packets not matched
B.) Processed sequentially from bottom to top
C.) Processed sequentially from top to bottom
D.) If a packet is denied it would be tested against the remaining statements in the access-list
E.) Once a match is made the packet is either denied or permitted
F.) Enabled on all interfaces by default
Ans A C E
Access-list are processed from top to bottom, once a match occurs the packet is either denied or permitted and is no longer tested and if no match occurs the packet is denied via the implicit deny.
200 Which OSI layer performs code conversion, code formatting and encryption?
A.) Physical
B.) Data-Link
C.) Application
D.) Transport
E.) Presentation
F.) Network
Ans E
Layer 6 the Presentation layers performs this function.
CCNA: Cisco Certified Network Associate Study Guide
201 Identify the 3 methods routers learn paths to destinations?
A.) Dynamic routing
B.) None of the above, configured by default
C.) Default routes
D.) Administrative distance
E.) Static routes
Ans A C E
Routers can learn paths via 3 different sources; static routes, dynamic routing protocols (i.e. RIP) and default routes.
202 Identify the purpose of the following command 'ip route 192.168.100.0 255.255.255.0 10.1.0.1'
A.) Enabling a dynamic routing protocol
B.) Creating a static route to the 10.1.0.0 network
C.) Teaches the router about the distant network 192.168.100.0 and how it can be reached via 10.1.0.1
D.) Assigning the IP address 192.168.100.0 to an interface
Ans C
A static routes teaches the router about a distant network and the next hop to reach that network. Command syntax:
ip route network-address subnet-mask next-hop-address
203 Based upon the 1st octet rule identify the range for a Class A address?
A.) 1 - 126
B.) 192 - 223
C.) 128 - 191
D.) 1 - 191
Ans A
Class A address has the 1st octet between 1 - 126. Class B between 128 - 191 and Class C between 192 - 223.
204 What does a Standard IP Access-list use as test criteria?
A.) IP source address
B.) IP source and destination address, protocol numbers and port numbers
C.) IPX source and destination address
D.) Source MAC address
Ans A
Standard IP access list use only source address.
205 What is the function of the Transport layer and which protocols reside there?
A.) MAC addressing - IP
B.) Interhost communication - SQL, NFS
C.) Best effort Packet delivery - TCP, UDP
D.) End-to-end connections - TCP, UDP
Ans D
Layer 4, the Transport layer, is responsible for end-to-end connections. The two TCP/IP protocols that reside there are TCP and UDP.
206 Identify the 3 Internet layer IP protocols?
A.) NetBios
B.) IPX
C.) ARP
D.) IP
E.) RARP
Ans C D E
NetBios and IPX are not layer 3 IP protocols. IP - Internet Protocol, ARP - Address Resolution Protocol and RARP - Reverse Address Resolution Protocol.
207 IPX routing updates occur how often?
A.) Every 30 seconds
B.) Every 60 seconds
C.) Only as needed
D.) When the remote router asks for an update
Ans B
IPX RIP updates are exchanged every 60 seconds.
208 Identify 3 methods not used to prevent routing loops?
A.) Holddown timers
B.) Sequence numbers
C.) Triggered updates
D.) Split horizon
E.) Area hierarchies
F.) Order of router startup
Ans B E F
Area hierarchies, sequence numbers and order of router startup all relate to Link State routing protocols which do NOT incur routing loops.
209 Identify the hardware component that stores the bootstrap program?
A.) ROM
B.) NVRAM
C.) Booter load
D.) RAM
E.) Flash
Ans A
ROM contains the boot strap code.
210 Which OSI layer provides mechanical, electrical, procedural for activating, maintaining physical link?
A.) Presentation
B.) Network
C.) Application
D.) Physical
E.) Transport
F.) Data-Link
Ans D
Layer 1 the Physical layer performs this function.
CCNA: Cisco Certified Network Associate Study Guide
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