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ICDN1 Networking Fundamentals

Frage 1 von 39

1

The process of HTTP asking TCP to send some data and making sure that it is received
correctly is an example of what?

Wähle eine der folgenden:

  • Same-layer interaction

  • Adjacent-layer interaction

  • OSI model

  • All of these answers are correct.

Erklärung

Frage 2 von 39

1

The process of TCP on one computer marking a TCP segment as segment 1, and the
receiving computer then acknowledging the receipt of TCP segment 1 is an example of
what?

Wähle eine der folgenden:

  • Data encapsulation

  • Same-layer interaction

  • Adjacent-layer interaction

  • OSI model

  • All of these answers are correct.

Erklärung

Frage 3 von 39

1

The process of a web server adding a TCP header to the contents of a web page, followed
by adding an IP header and then adding a data link header and trailer is an example of
what?

Wähle eine der folgenden:

  • Data encapsulation

  • Same-layer interaction

  • OSI model

  • All of these answers are correct.

Erklärung

Frage 4 von 39

1

Which of the following terms is used specifically to identify the entity created when
encapsulating data inside data link layer headers and trailers?

Wähle eine der folgenden:

  • Data

  • Chunk

  • Segment

  • Frame

  • Packet

Erklärung

Frage 5 von 39

1

Which OSI layer defines the functions of logical network-wide addressing and
routing?

Wähle eine der folgenden:

  • Layer 1

  • Layer 2

  • Layer 3

  • Layer 4

  • Layer 5,6, or 7

Erklärung

Frage 6 von 39

1

Which OSI layer defines the standards for cabling and connectors?

Wähle eine der folgenden:

  • Layer 1

  • Layer 2

  • Layer 3

  • Layer 4

  • Layer 5, 6, or 7

Erklärung

Frage 7 von 39

1

Which of the following terms are not valid terms for the names of the seven
OSI layers? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Application

  • Data Link

  • Transmission

  • Presentation

  • Internet

  • Session

Erklärung

Frage 8 von 39

1

Which of the following protocols are examples of TCP/IP data link layer protocols?
(Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Ethernet

  • HTTP

  • IP

  • UDP

  • SMTP

  • TCP

  • PPP

Erklärung

Frage 9 von 39

1

In the LAN for a small office, some user devices connect to the LAN using a cable, while
others connect using wireless technology (and no cable). Which of the following is true
regarding the use of Ethernet in this LAN?

Wähle eine der folgenden:

  • Only the devices that use cables are using Ethernet.

  • Only the devices that use wireless are using Ethernet.

  • Both the devices using cables and those using wireless are using Ethernet.

  • None of the devices are using Ethernet.

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Frage 10 von 39

1

Which of the following Ethernet standards defines Gigabit Ethernet over UTP cabling?

Wähle eine der folgenden:

  • 10BASE-T

  • 100BASE-T

  • 1000BASE-T

  • None of the other answers is correct.

Erklärung

Frage 11 von 39

1

Which of the following is true about Ethernet crossover cables for Fast Ethernet?

Wähle eine der folgenden:

  • Pins 1 and 2 are reversed on the other end of the cable.

  • Pins 1 and 2 on one end of the cable connect to pins 3 and 6 on the other end of the
    cable.

  • Pins 1 and 2 on one end of the cable connect to pins 3 and 4 on the other end of the
    cable.

  • The cable can be up to 1000 meters long to cross over between buildings.

  • None of the other answers is correct.

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Frage 12 von 39

1

Each answer lists two types of devices used in a 100BASE-T network. If these devices
were connected with UTP Ethernet cables, which pairs of devices would require a straight-
through cable? (Choose three answers.)

Wähle eine oder mehr der folgenden:

  • PC and router

  • PC and switch

  • Hub and switch

  • Router and hub

  • Wireless access point (Ethernet port) and switch

Erklärung

Frage 13 von 39

1

Which of the following is true about the CSMA/CD algorithm?

Wähle eine der folgenden:

  • The algorithm never allows collisions to occur.

  • Collisions can happen, but the algorithm defines how the computers should notice a
    collision and how to recover.

  • The algorithm works with only two devices on the same Ethernet.

  • None of the other answers is correct.

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Frage 14 von 39

1

Which of the following are true about the format of Ethernet addresses? (Choose three
answers.)

Wähle eine oder mehr der folgenden:

  • Each manufacturer puts a unique OUI code into the first 2 bytes of the address.

  • Each manufacturer puts a unique OUI code into the first 3 bytes of the address.

  • Each manufacturer puts a unique OUI code into the first half of the address.

  • The part of the address that holds this manufacturer’s code is called the MAC.

  • The part of the address that holds this manufacturer’s code is called the OUI.

  • The part of the address that holds this manufacturer’s code has no specific name.

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Frage 15 von 39

1

Which of the following terms describe Ethernet addresses that can be used to send one
frame that is delivered to multiple devices on the LAN? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Burned-in address

  • Unicast address

  • Broadcast address

  • Multicast address

Erklärung

Frage 16 von 39

1

Which of the following best describes the main function of OSI Layer 1 as used in
WANs?

Wähle eine der folgenden:

  • Framing

  • Delivery of bits from one device to another

  • Addressing

  • Error detection

Erklärung

Frage 17 von 39

1

In the cabling for a leased line, which of the following typically connects to a four-wire
line provided by a telco?

Wähle eine der folgenden:

  • Router serial interface without internal CSU/DSU

  • CSU/DSU

  • Router serial interface with internal transceiver

  • Switch serial interface

Erklärung

Frage 18 von 39

1

Which of the following is an accurate speed at which a leased line can operate in the
United States?

Wähle eine der folgenden:

  • 100 Mbps

  • 100 Kbps

  • 256 Kbps

  • 6.4 Mbps

Erklärung

Frage 19 von 39

1

Which of the following fields in the HDLC header used by Cisco routers does Cisco add,
beyond the ISO standard HDLC?

Wähle eine der folgenden:

  • Flag

  • Type

  • Address

  • FCS

Erklärung

Frage 20 von 39

1

Two routers, R1 and R2, connect using an Ethernet over MPLS service. The service pro-
vides point-to-point service between these two routers only, as a Layer 2 Ethernet service.
Which of the following are the most likely to be true about this WAN? (Choose two
answers.)

Wähle eine oder mehr der folgenden:

  • R1 will connect to a physical Ethernet link, with the other end of the cable
    connected to R2.

  • R1 will connect to a physical Ethernet link, with the other end of the cable
    connected to a device at the WAN service provider point of presence.

  • R1 will forward data link frames to R2 using an HDLC header/trailer.

  • R1 will forward data link frames to R2 using an Ethernet header/trailer.

Erklärung

Frage 21 von 39

1

Which of the following Internet access technologies, used to connect a site to an ISP,
offers asymmetric speeds? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Leased lines

  • DSL

  • Cable Internet

  • BGP

Erklärung

Frage 22 von 39

1

Fred has just added DSL service at his home, with a separate DSL modem and consumer-
grade router with four Ethernet ports. Fred wants to use the same old phone he was using
before the installation of DSL. Which is most likely true about the phone cabling and
phone used with his new DSL installation?

Wähle eine der folgenden:

  • He uses the old phone, cabled to one of the router/switch device’s Ethernet ports.

  • He uses the old phone, cabled to the DSL modem’s ports.

  • He uses the old phone, cabled to an existing telephone port, and not to any new device.

  • The old phone must be replaced with a digital phone.

Erklärung

Frage 23 von 39

1

Which of the following are functions of OSI Layer 3 protocols? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Logical addressing

  • Physical addressing

  • Path selection

  • Arbitration

  • Error recovery

Erklärung

Frage 24 von 39

1

Imagine that PC1 needs to send some data to PC2, and PC1 and PC2 are separated by
several routers. Both PC1 and PC2 sit on different Ethernet LANs. What are the largest
entities (in size) that make it from PC1 to PC2? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Frame

  • Segment

  • Packet

  • L5 PDU

  • L3 PDU

  • L1 PDU

Erklärung

Frage 25 von 39

1

Which of the following is a valid Class C IP address that can be assigned to a host?

Wähle eine der folgenden:

  • 1.1.1.1

  • 200.1.1.1

  • 128.128.128.128

  • 224.1.1.1

  • 223.223.223.255

Erklärung

Frage 26 von 39

1

What is the assignable range of values for the first octet for Class A IP networks?

Wähle eine der folgenden:

  • 0 to 127

  • 0 to 126

  • 1 to 127

  • 1 to 126

  • 128 to 191

  • 128 to 192

Erklärung

Frage 27 von 39

1

PC1 and PC2 are on two different Ethernet LANs that are separated by an IP router. PC1’s
IP address is 10.1.1.1, and no subnetting is used. Which of the following addresses could
be used for PC2? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • 10.1.1.2

  • 10.2.2.2

  • 10.200.200.1

  • 9.1.1.1

  • 225.1.1.1

  • 1.1.1.1

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Frage 28 von 39

1

Imagine a network with two routers that are connected with a point-to-point HDLC serial
link. Each router has an Ethernet, with PC1 sharing the Ethernet with Router1 and PC2
sharing the Ethernet with Router2. When PC1 sends data to PC2, which of the following
is true?

Wähle eine der folgenden:

  • Destination MAC address

  • Source MAC address

  • Destination IP address

  • Source IP address

  • Destination MAC and IP address

Erklärung

Frage 29 von 39

1

Which of the following are true about a LAN-connected TCP/IP host and its IP routing
(forwarding) choices? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • The host always sends packets to its default gateway.

  • The host sends packets to its default gateway if the destination IP address is in a different class of IP network than the host.

  • The host sends packets to its default gateway if the destination IP address is in a different subnet than the host.

  • The host sends packets to its default gateway if the destination IP address is in the
    same subnet as the host.

Erklärung

Frage 30 von 39

1

Which of the following are functions of a routing protocol? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Advertising known routes to neighboring routers

  • Learning routes for subnets directly connected to the router

  • Learning routes, and putting those routes into the routing table, for routes advertised
    to the router by its neighboring routers

  • Forwarding IP packets based on a packet’s destination IP address

Erklärung

Frage 31 von 39

1

A company implements a TCP/IP network, with PC1 sitting on an Ethernet LAN. Which
of the following protocols and features requires PC1 to learn information from some
other server device?

Wähle eine der folgenden:

  • ARP

  • Ping

  • DNS

  • None of the other answers are correct

Erklärung

Frage 32 von 39

1

Which of the following is not a feature of a protocol that is considered to match OSI
Layer 4?

Wähle eine der folgenden:

  • Error recovery

  • Flow control

  • Segmenting of application data

  • Conversion from binary to ASCII

Erklärung

Frage 33 von 39

1

Which of the following header fields identify which TCP/IP application gets data
received by the computer? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Ethernet Type

  • SNAP Protocol Type

  • IP Protocol

  • TCP Port Number

  • UDP Port Number

Erklärung

Frage 34 von 39

1

Which of the following are typical functions of TCP? (Choose four answers.)

Wähle eine oder mehr der folgenden:

  • Flow Control (windowing)

  • Error recovery

  • Multiplexing using port numbers

  • Routing

  • Encryption

  • Ordered data transfer

Erklärung

Frage 35 von 39

1

Which of the following functions is performed by both TCP and UDP?

Wähle eine der folgenden:

  • Windowing

  • Error recovery

  • Multiplexing using port numbers

  • Routing

  • Encryption

  • Ordered data transfer

Erklärung

Frage 36 von 39

1

What do you call data that includes the Layer 4 protocol header, and data given to Layer
4 by the upper layers, not including any headers and trailers from Layers 1 to 3? (Choose
two answers.)

Wähle eine oder mehr der folgenden:

  • L3PDU

  • Chunk

  • Segment

  • Packet

  • Frame

  • L4PDU

Erklärung

Frage 37 von 39

1

In the URL http://www.certskills.com/ICND1, which part identifies the web server?

Wähle eine der folgenden:

  • http

  • www.certskills.com

  • certskills.com

  • http://www.certskills.com

  • The file name.html includes the host name.

Erklärung

Frage 38 von 39

1

When comparing VoIP with an HTTP-based mission-critical business application, which
of the following statements are accurate about the quality of service needed from the net-
work? (Choose two answers.)

Wähle eine oder mehr der folgenden:

  • VoIP needs better (lower) packet loss.

  • HTTP needs less bandwidth.

  • HTTP needs better (lower) jitter.

  • VoIP needs better (lower) delay.

Erklärung

Frage 39 von 39

1

Which of the following protocols are examples of TCP/IP transport layer protocols?
(Choose two answers.)

Wähle eine oder mehr der folgenden:

  • Ethernet

  • HTTP

  • IP

  • UDP

  • SMTP

  • TCP

Erklärung

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