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401 Which of the following are
characteristics of UDP?
A.) UDP is connection oriented.
B.) UDP is used with TFTP.
C.) UDP is unreliable.
D.) UDP is connectionless.
E.) UDP is at the transport layer.
F.) UDP uses no acknowledgements.
Ans B C D E F
UDP sends packets 'blind' down the network, and relies on
upper-layer protocols to form connections and detect errors. TCP
is a connection-oriented protocol that can provide reliable
transport.
402 What is a characteristic of Store and Forward switches?
A.) They work at wire speed.
B.) They are the same as Cut-Through switching in 'prune' mode.
C.) They forward based on transport layer info.
D.) They forward the frame before it is completely read.
E.) They increase latency.
Ans E
Store and froward will not forward fragments. The longer the
packet, the longer the delay (latency) in the switch. There is
no such thing as 'prune' mode.
403 The Internet Protocol (IP) occurs at what layer of the
seven layer model?
A.) Physical
B.) Presentation
C.) Network
D.) Datalink
E.) Session
F.) Transport
Ans C
IP is a routed protocol that occurs at layer 3. Other layer 3
protocols include IPX, APPLETALK, and DECNET.
404 In regards to TCP/IP, which class of address allows for
the fewest valid Internet hosts?
A.) D
B.) E
C.) Classes are not used in TCP/IP.
D.) B
E.) C
F.) A
Ans E
Class A = 16.7 million hosts
Class B = 65,534 hosts
Class C = 254 hosts
405 For IPX, what is the DEFAULT Cisco Encapsulation on an
Ethernet interface?
A.) novell-ether
B.) gns
C.) snap
D.) arpa
E.) sap
F.) dix
Ans A
At the time when Cisco first supported IPX, Novell-Ether (Novell
proprietary 802.3 'raw') was the default frame type for NetWare
2.x and 3.x file servers. Now, Novell has changed their default
frame type to 802.2 (which is really IEEE 802.3 Ethernet, with
LLC 802.2 headers).
406 Novell NetWare has an Ethernet frame type called
Ethernet_II. What is the matching Cisco command line keyword for
this encapsulation method?
A.) dix
B.) sap
C.) arpa
D.) gns
E.) snap
F.) novell-ether
Ans C
Novell 802.2 = sap (contains 802.2 LLC headers)
Novell 802.3 = novell-ether (NetWare proprietary)
Ethernet_II = arpa (the Internet standard)
snap = snap (field type set to 'AA')
407 There are 2 types of PPP authentication supported by the
Cisco IOS. What are they?
A.) PAP
B.) PREDICTOR
C.) MD5
D.) CHAP
E.) STACKER
F.) MSCHAP
Ans A D
Router(config-if)#ppp authentication ?
chap Challenge Handshake Authentication Protocol (CHAP)
pap Password Authentication Protocol (PAP)
408 Which of the following are examples of the Transport
Layer?
A.) Token Ring
B.) UDP
C.) TCP
D.) IP
E.) SQL
F.) LLC
Ans B C
TCP is connection oriented.
UDP is connectionless.
409 Which of the following describe SMTP?
A.) Used for downloading files to the router.
B.) Used for sending e-mail.
C.) Uses TCP.
D.) Uses UDP.
E.) Uses port 25.
F.) Used for managing IP devices.
Ans B C E
Send / Simple (depending on literature) Mail Transport Protocol
(SMTP) is used for delivering mail to other mail servers. It
uses port 25, and relies on TCP.
POP 3 (Post Office Protocol version 3) is used for retrieving
mail from mail servers to clients.
410 What is the standard ISDN term for a native ISDN modem?
A.) ET
B.) LE
C.) TE2
D.) TE3
E.) TA
Ans E
The marketing term 'ISDN modem' was created to help sell the
ISDN idea to America. There is no such thing as an analog
modulator demodulator for digital ISDN. The Terminal Adapter
(TA) allows you to connect a PC to a digital ISDN line directly.
In the real world, ISDN is digital, modems are analog.
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