CCNA 1 Chapter 5
1.
In an IPv4 environment, what information is used by the router to forward data packets from one
interface of a router to another?
destination network
address
source network address
source MAC address
well known port destination address
2.
What information is added during encapsulation at OSI Layer 3?
source and destination MAC
source and destination application
protocol
source and destination port number
source and destination IP
address
3.
In a connectionless system, which of the following is correct?
The destination is contacted before
a packet is sent.
The destination is not
contacted before a packet is sent.
The destination sends an
acknowledgement to the source that indicates the packet was received.
The destination sends an
acknowledgement to the source that requests the next packet to be sent.
4.
Which IP packet field will prevent endless loops?
type-of-service
identification
flags
time-to-live
header checksum
5.
Which portion of the network layer address does a router use to forward
packets?
host portion
broadcast address
network portion
gateway address
6.
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192.135.250.1
192.31.7.1
192.133.219.0
192.133.219.1
7.
If the default gateway is configured incorrectly on the host, what is the
impact on communications?
The host is unable to communicate on
the local network.
The host can communicate
with other hosts on the local network, but is unable to communicate with hosts
on remote networks.
The host can communicate with other
hosts on remote networks, but is unable to communicate with hosts on the local
network.
There is no impact on
communications.
8.
What is the purpose of a default gateway?
physically connects a computer to a
network
provides a permanent address to a
computer
identifies the network to which a
computer is connected
identifies the logical address of a
networked computer and uniquely identifies it to the rest of the network
**identifies the device
that allows local network computers to communicate with devices on other
networks
9.
What type of routing uses information that is manually entered into the routing
table?
dynamic
interior
static
standard
10.
When the destination network is not listed in the routing table of a Cisco
router, what are two possible actions that the router might take? (Choose two.)
The router sends an ARP request to
determine the required next hop address.
The router discards the
packet.
The router forwards the packet
toward the next hop indicated in the ARP table.
The router forwards the packet to
the interface indicated by the source address.
The router forwards the
packet out the interface indicated by the default route entry.
11.
What are the key factors to consider when grouping hosts into a common network?
(Choose three.)
gateways
purpose
physical addressing
software version
geographic location
ownership
12.
What is a component of a routing table entry?
the MAC address of the interface of
the router
the destination Layer 4 port number
the destination host address
the next-hop address
13.
Which intermediary devices could be used to implement security between
networks? (Choose two.)
router
hub
switch
firewall
access point
bridge
14.
What are three common problems with a large network? (Choose three.)
too few broadcasts
performance degradation
security issues
limited management responsibility
host identification
protocol compatibility
15.
Refer to the exhibit. All devices shown in the exhibit have factory default settings. How many broadcast domains are represented in the topology that is shown?
3
4
5
7
8
11
16.
Which three statements are true about routes and their use? (Choose three.)
If no route to the destination
network is found, the packet is returned to the previous router.
If the destination network
is directly connected, the router forwards the packet to the destination host.
If multiple network entries exist
for the destination network, the most general route is used to forward the
packet.
If no route exists for the
destination network and a default route is present, the packet is forwarded to
the next-hop router.
If the originating host
has a default gateway configured, the packet for a remote network can be
forwarded using that route.
If a host does not have a route
manually configured for the destination network, the host will drop the packet.
17.
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10.10.10.26
127.0.0.1
10.10.10.6
10.10.10.1
224.0.0.0
18.
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Replace S2 with a router.
Place all servers on S1.
Disable TCP/IP broadcasts.
Subnet the 192.168.0.0 /24
network.
Disable all unused interfaces on the
switches.
19.
192.168.0.2 is the
next-hop address that is used by R3 to route a packet from the 10.0.0.0 network
to the 172.16.0.0 network.
10.0.0.1 is the next-hop address
that is used by R1 to route a packet from the 192.168.12.0 network to the
10.0.0.0 network.
192.168.0.1 is the next-hop address
that is used by R1 to route a packet from the 192.168.12.0 network to the
172.16.0.0 network.
172.16.0.1 is the next-hop address
that is used by R3 to route a packet from the 10.0.0.0 to the 172.16.0.0
network.
192.168.0.1 is the
next-hop address that is used by R2 to route a packet from the 172.16.0.0
network to the 192.168.12.0 network.
192.168.0.2 is the next-hop address
that is used by R2 to route a packet from the 172.16.0.0 network to the
192.168.12.0 network.
20.
What two characteristics are commonly associated with dynamic routing
protocols? (Choose two.)
require no device configuration
provide routers with
up-to-date routing tables
require less processing power than
static routes require
consume bandwidth to
exchange route information
prevent manual configuration and
maintenance of the routing table
21.
What statement describes the purpose of a default route?
A host uses a default route to
transfer data to another host on the same network segment.
A host uses a default route to
forward data to the local switch as the next hop to all destinations.
A host uses a default route to
identify the Layer 2 address of an end device on the local network.
A host uses a default
route to transfer data to a host outside the local network when no other route
to the destination exists.
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