Friday, April 11, 2014

CCNA 1 Chapter 5 -2014

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

2. What information is added during encapsulation at OSI Layer 3?
source and destination IP address

3. In a connectionless system, which of the following is correct?
The destination is not contacted before a packet is sent.

4. Which IP packet field will prevent endless loops?
time-to-live

CCNA 1 Chapter 6 -2014

1. How many bits make up an IPv4 address?
32

2. Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
255.255.255.192

3. Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server’s properties to allow connectivity to the network?
IP address: 192.168.10.38 subnet mask: 255.255.255.248 default gateway: 192.168.10.33

4. Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic.
/27

CCNA 1 Chapter 7 -2014

1. Which options are properties of contention-based media access for a shared media? (Choose three.)
non-deterministic
less overhead
collisions exist

2. What is a primary purpose of encapsulating packets into frames?
facilitate the entry and exit of data on media

3. Refer to the exhibit. How many unique CRC calculations will take place as traffic routes from the PC to the laptop?
8

4. What is true concerning physical and logical topologies?
Logical topologies consist of virtual connections between nodes.

CCNA 1 Chapter 8 -2014

1. Which type of cable run is most often associated with fiber-optic cable?
backbone cable

2. In most business LANs, which connector is used with twisted-pair networking cable?
RJ-45

3. When is a straight-through cable used in a network?
when connecting a host to a switch

4. With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
the magnetic field around the adjacent pairs of wire