211 Identify 2 characteristics of PPP?
A.) Uses LLC to establish the link
B.) Default serial encapsulation
C.) Support multiple layer 3 protocols
D.) Offers two types of authentication; PAP and CHAP
Ans C D
PPP is not the default encapsulation and uses LCP not LLC to establish the link. It support multiple layer 3 protocols and supports authentication.
212 Identify 3 characteristics of a connection oriented protocol?
A.) Path determination
B.) Flow control
C.) Acknowledgements
D.) Uses hop count as metric
E.) 3 step handshake
Ans B C E
Connection oriented protocols must first establish the connection (3 step handshake), employ methods to acknowledge the receipt of data (acknowledgements) and slow down the flow of data if required (flow control).
213 What is the maximum hop count for IP RIP?
A.) Infinity
B.) 16
C.) 15
D.) 1
Ans C
15 is the maximum hop count, underscoring the size limitation of RIP.
214 What is Cisco's default encapsulation method on serial interfaces?
A.) ANSI
B.) Cisco
C.) Q933a
D.) HDLC
Ans D
Cisco's implementation of HDLC is only compatible with Cisco routers. It is the default encapsulation type for serial interfaces.
215 Which of the following is a characteristic of a switch, but not of a repeater?
A.) Switches forward packets based on the IPX or IP address in the frame
B.) Switches forward packets based on the IP address in the frame
C.) Switches forward packets based on the MAC address in the frame
D.) Switches forward packets based only on the IP address in the packet
Ans C
A repeater regenerates the signal it receives, a switch makes decisions based upon MAC addresses to determine whether a frame should be forwarded. Repeaters forward all packets.
216 Ping uses which Internet layer protocol?
A.) RARP
B.) ICMP
C.) ARP
D.) FTP
Ans B
Internet Control Message Protocol - ICMP is a management protocol and messaging service provider for IP. Its messages are carried as IP datagrams.
ICMP is used in the following events:
Destination Unreachable - If a router cannot send an IP packet any further, it uses an ICMP echo to send a message back to the sender notifying it that the remote node is unreachable.
Buffer Full - If a routers memory buffer is full ICMP will send out a message to the originator.
Hops - Each IP datagram is assigned a path. This consists of hops. If it goes through the maximum number of hops, the packet is discarded and the discarding router sends an ICMP echo to the host.
Ping - Ping use ICMP echo message to check connectivity.
217 Which is true regarding store-and-forward switching method?
A.) Latency varies depending on frame-length
B.) Latency is constant
C.) It is default for all Cisco switches
D.) It only reads the destination hardware address before forwarding the frame
Ans A
Store-and-Forward switching copies the entire frame into its buffer and computes the CRC. If a CRC error is detected, the frame is discarded, or if the frame is a runt (less than 64 bytes including the CRC) or a giant (more than 1518 bytes including the CRC). The LAN switch then looks up the destination address in its switching table and determines the outgoing interface. The frame is then forwarded to the outgoing interface. Cisco Catalyst 5000 switches uses the Store-and-Forward method. The problem with Store-and-Forward switching is latency is increased. Latency also varies with the size of the frame. The larger the frame, the more latency associated. This of course is due to the fact that the entire frame is copied into its buffer before being forwarded.
218 Which three of the following are true statements about connection-oriented sessions?
A.) The segments delivered are acknowledged back to the sender upon their reception
B.) Any segments not acknowledged the are retransmitted by the receiver
C.) A manageable data flow is maintained in order to avoid congestion, overloading and loss of any data
D.) Segments are sequenced back into their proper order upon arrival at their destination
Ans A C D
Connection-oriented services are useful for transmitting data from applications that are intolerant of delays and packet re-sequencing. FTP and Telnet applications are based on connection-oriented services as well as some voice and video programs. Any segment that is not acknowledged by the received is retransmitted by the sender.
219 What does a metric of 16 hops represent when using RIP?
A.) Number of hops to the destination
B.) Destination unreachable
C.) Number of routers
D.) Bandwidth
Ans B
Routing Information Protocol (RIP) is a distance vector routing protocol that used hop count as its metric. The maximum hop count is 15, 16 hops is considered unreachable. RIP updates are broadcast every 30 seconds by default. RIP has an administrative distance of 120.
220 You need to come up with a TCP/IP addressing scheme for your company. Which two factors must you consider when you define the subnet mask for the network?
A.) The location of DHCP servers
B.) The volume of traffic on each subnet
C.) The number of subnets on the network
D.) The location of the default gateway
E.) The number of host IDs on each subnet
Ans C E
When determining which subnet mask to use, you must determine how many hosts and how many subnets are required.
221 What is the difference between TCP and UDP?
A.) TCP is connection-oriented; UDP uses acknowledgements only
B.) TCP is connection-oriented; UDP is connectionless
C.) Both TCP and UDP are connection-oriented, but only TCP uses windowing
D.) TCP and UDP both have sequencing, but UDP is connectionless
Ans; B
TCP provides guaranteed connection oriented delivery of packets, UDP does not.
222 What does the 'S' mean when looking at the routing table?
A.) Statically connected
B.) Directly connected
C.) Dynamically attached
D.) Shutdown route
Ans A
Statically connected routes are those that an administrator has manually entered into the routing table.
223 Why would you use static routing instead of dynamic routing?
A.) When you want automatic updates of the routing tables
B.) All the time
C.) When you have very few routes and want to conserve bandwidth
D.) When you have a gateway of last resort
Ans C
Static routes are typically used when there are very few routes and you want to conserve bandwidth. Since routing protocols are constantly sending their updates across the wire, it can cause a great deal of congestion.
224 On Cisco catalyst 5000 how would you set the second port on the controller in the first slot to full duplex?
A.) Set port duplex 1/1 full
B.) Set port duplex 1/2 full
C.) Set port duplex 0/1 full
D.) Set port duplex 0/2 full
Ans B
The syntax is: set type duplex slot/port
225 What does the acronym ARP stand for?
A.) Address Resolution Phase
B.) ARP Resolution Protocol
C.) Address Resolution Protocol
D.) Address Recall Protocol
Ans C
The Address Resolution Protocol (ARP) resolved IP addresses to MAC addresses.
226 What is the default encapsulation of Netware 3.12?
A.) Ethernet_II
B.) 802.5
C.) 802.2
D.) 802.3
Ans C
The 802.2 Frame Type is the default frame-type for Netware 3.12.
227 Regarding frame relay, which of the following statements are true?
A.) You must use ANSI encapsulation if connecting to non-Cisco equipment
B.) You must use IETF encapsulation if connecting to non-Cisco equipment
C.) You must use Q.933a encapsulation if connecting to non-Cisco equipment
D.) You must use Cisco encapsulation if connecting to non-Cisco equipment
Ans B
Cisco's encapsulation for Frame relay is proprietary. To communicate with non-Cisco equipment when using frame-relay encapsulation, the IETF method must be used.
228 What is required to support full-duplex Ethernet?
A.) Multiple paths between multiple stations on a link
B.) Automatic sensing operation by all connected stations
C.) Loopback and collision detection disabled
D.) Full-duplex NIC cards
Ans C D
Full duplex ethernet requires that the NIC supports full-duplex, and loopback and collision detection are disabled.
229 Which layer is responsible for determining if sufficient resources for the intended communication exists?
A.) Application
B.) Network
C.) Session
D.) Presentation
E.) Transport
Ans A
The Application layer is responsible for determining if sufficient resources for the intended communication exists.
230 What are the 2 functions of the Data Link Mac layer?
A.) Handles access to shared media
B.) Manages protocol access to the physical network medium
C.) Provides SAPs for higher level protocols
D.) Allows multiple devices to uniquely identify one another on the data link layer
Ans B D
Media Access Control (MAC) -The MAC sublayer manages protocol access to the physical network medium. The IEEE MAC specification defines MAC addresses, which allow multiple devices to uniquely identify one another at the data link layer.
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