Certified LPI 201-450 pdf

Question No: 2

Which of the following commands will erase the contents of the /dev/sdb3 partition?

A. rm /dev/sdb3

B. dd if=/dev/zero of=/dev/sdb3

C. dd of=/dev/zero if=/dev/sdb3

D. umount /dev/sdb3

View Answer

Question No: 3

When a makefile is included in a source code package, what are commonly defined targets in the file?

A. CFLAGS, CPPFLAGS, LIBS, LDFLAGS

B. clean, install, uninstall

C. PATHS, DESTDIR, LIBS, LDFLAGS

D. prefix, exec_prefix, bindir, mandir

View Answer

Question No: 4

Which command can be used to scan a specified network looking for IP addresses that appear to be in use?

A. nmap

B. tcpdump

C. ip

D. netscan

E. hostdiscover

View Answer

Question No: 5

Which command is used to make an exact copy, at a single point in time, of a logical volume while still allowing the original logical volume to be updated?

A. lvcclone

B. lvcreate

C. lvm2

D. lvsnap

E. lvsnapshot

View Answer

Question No: 6

Considering the following kernel IP routing table below, which of the following commands must be used to remove the route to the network 10.10.1.0/24? (Select TWO answers)

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

203.0.113.162 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0

172.16.87.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

192.168.246.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1

10.10.1.0 192.168.246.11 255.255.255.0 UG 0 0 0 eth1

127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo

0.0.0.0 203.0.113.162 0.0.0.0 UG 0 0 0 ppp0

A. ip net delete 10.10.1.0/24 B. route del 10.10.1.0/24

C. route del -net 10.10.1.0/24

D. route del 10.10.1.0/24 gw 192.168.246.11

E. ip route delete 10.10.1.0/24

View Answer

Question No: 7

Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

A. Bandwidth in both directions

B. Number of nodes using the link

C. Effective Latency

D. Number of IPv4 and IPv6 packets

E. Number of used TCP ports

View Answer

Question No: 8

Which of the following files are used to resolve hostnames to IP addresses? (Choose TWO correct answers.)

A. /etc/systems

B. /etc/hosts

C. /etc/network

D. /etc/dns.conf

E. /etc/resolv.conf

View Answer

Question No: 9

Which of the following commands displays the physical path of the kernel module named dummy?

A. modprobe u2013i dummy

B. modinfo u2013n dummy

C. modpath u2013v dummy

D. depmod u2013n dummy

E. modshow u2013p dummy

View Answer

Question No: 10

Under which of the following circumstances would the command ping output the string (DUP!)?

A. When the ICMP packets are send to a broadcast address and multiple hosts respond.

B. When the host being sent ICMP packets is on a different network.

C. When the router responds to the ICMP packet in addition to the host receiving the ICMP packets.

D. When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.

View Answer

Question No: 11

According to the tcpdump output below, what is the IP address of the client host?

02:12:40.511381 IP 192.168.246.11.1045 > 192.168.246.1.22: S 3838532429:3838532429(0) win 5840 <mss

1460,sackOK,timestamp 31325740,nop,wscale 2>

02:12:40.511540 IP 192.168.246.1.22 > 192.168.246.11.1045: S 1209330085:1209330085(0) ack 383853

2430 win 5792 <mss 1460,sackOK,timestamp 11553457 3132574,nop,wscale 0>

02:12:40.511755 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 1 win 1460 <nop,nop,timestamp 3 132574

11553457>

02:12:40.515122 IP 192.168.246.1.22 > 192.168.246.11.1045: P 1:26(25) ack 1 win 5792 <nop,nop,timestamp

11553460 3132574>

02:12:40.515511 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 26 win 1460 <nop,nop,timestamp

3132578 11553460>

02:12:40.515952 IP 192.168.246.11.1045 > 192.168.246.1.22: P 1:23(22) ack 26 win 1460

<nop,nop,timestamp 3132578 11553460>

View Answer